Release v2.14.0.13

We apologize for the calc v2.14.0.12 source tarball that was missing
critical files.  While the executable was well tested, our release
process was deficient.

We are improved our release process and added tests during the release
procedure to help verify that we are not regressing in to the
"v2.14.0.12 source tarball" issue, among other things.

Depending on how things do, you might is several releases come out over
a short period of time.  The core of calc isn't changing, so the calc
executable will be the same as we focus on the Makefiles, our release
procedure, and related documentation / help files.

Removed constructed help file that incorrectly added as a src file.

=-=

The following are the changes in this release:

    Made major changes to our release process in order to avoid
    missing critical files that happened in calc v2.4.0.12.

    Minor tweak to seed() builtin.  Updated help/srand and help/srandom.

    Moved Makefile.ship into Makefile.

    Removed custom/Makefile.head and custom/Makefile.tail.

    The custom/Makefile is now part of source and includes Makefile.
    In particular, custom/Makefile makes use of the 'middle' of
    the new top level Makefile where calc's top level Makefile
    variables are defined.

    Makefile.simple and custom/Makefile.simple are now part of the source
    and are constructed from Makefile and custom/Makefile respectively.
    The Makefile.simple and custom/Makefile.simple avoid using GNU
    conditionals. They may be used with older/classic make commands.

    Makefile.local will include comments about how to better use
    it. Between releases, Makefile.local at the top of the master branch
    will contain how we typically build calc and test calc (FYI: we
    normally enable things such as -Werror -Wextra -pedantic).  When we
    push out a release, Makefile.local will be stripped of non-comment
    lines.  Thus, releases of calc, and, released "calc*.src.rpm"
    files and the source tarballs, will have a Makefile.local with
    only comments.

    The "README.*" files and "HOWTO.INSTALL" file have been updated.

    By default, compiler warnings have been turned up.  The Makefile
    variable ${CCWARN} now defaults to:

	CCWARN= -Wall -Wextra -pedantic

    The previous level of compiler warnings can be easily restored by
    adding to Makefile.local:

	CCWARN:= -Wall

    The readline, history and ncurses libraries are now default.
    The Makefile variables ${USE_READLINE}, ${READLINE_LIB}, and
    ${READLINE_EXTRAS} now default to:

	USE_READLINE= -DUSE_READLINE
	READLINE_LIB= -lreadline
	READLINE_EXTRAS= -lhistory -lncurses

    The previous mode where readline, history and ncurses libraries
    were not compiled in by default can be easily restored by
    adding to Makefile.local:

	USE_READLINE:=
	READLINE_LIB:=
	READLINE_EXTRAS:=

    We have renamed "stable" as "production".
    We have renamed "unstable" as "tested".

    On the web site:

	http://www.isthe.com/chongo/src/calc/

    these files has been renamed:

	2.x.y.z_IS_LATEST_STABLE   ==> 2.x.y.z_IS_LATEST_PRODUCTION
	2.x.y.z_IS_LATEST_UNSTABLE ==> 2.x.y.z_IS_LATEST_TESTED

    The terms 'stable' and 'unstable' were both misleading and
    inaccurate.  For details see the new documention file:

	README.RELEASE

    See also the help command:

	; help release

    Fixed bug impacting how have_ustat.h was formed.

    Updated help/archive, BUGS, HOWTO.INSTALL to reflect GitHub use.

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,71 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ master ]
+  schedule:
+    - cron: '41 1 * * 6'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'cpp' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
+        # Learn more:
+        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v1
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

.gitignore

@@ -0,0 +1,112 @@
+# files and directories created during the building of calc and other Makefile actions
+#
+# NOTE: While many of these might be part of a released calc tarball, they are
+#	not consider development source.  Some other file(s) and/or programs
+#	generate these files.
+#
+.dynamic
+.hsrc
+NOTES
+align32.h
+args.h
+cal/.all
+calc
+calc.1
+calc.usage
+calcerr.c
+calcerr.h
+charbit.h
+conf.h
+cscript/.all
+cscript/4dsphere
+cscript/README
+cscript/fproduct
+cscript/mersenne
+cscript/piforever
+cscript/plus
+cscript/powerterm
+cscript/simple
+cscript/square
+custom/.all
+custom/libcustcalc*
+endian
+endian_calc.h
+fposval.h
+have_arc4random.h
+have_ban_pragma.h
+have_const.h
+have_environ.h
+have_fpos.h
+have_fpos_pos.h
+have_getpgid.h
+have_getprid.h
+have_getsid.h
+have_gettime.h
+have_limits.h
+have_memmv.h
+have_newstr.h
+have_offscl.h
+have_posscl.h
+have_rusage.h
+have_stdlib.h
+have_stdvs
+have_strdup.h
+have_string.h
+have_strlcat.h
+have_strlcpy.h
+have_times.h
+have_uid_t.h
+have_unistd.h
+have_unused.h
+have_urandom.h
+have_ustat.h
+help/.all
+help/COPYING
+help/COPYING-LGPL
+help/binding
+help/bindings
+help/bug
+help/bugs
+help/builtin
+help/change
+help/changes
+help/contrib
+help/copy
+help/cscript
+help/custom_cal
+help/errorcode
+help/errorcodes
+help/full
+help/funclist
+help/funclist.c
+help/libcalc
+help/man
+help/new_custom
+help/question
+help/questions
+help/releases
+help/resource
+help/type
+help/usage
+libcalc*
+libcustcalc*
+longbits
+longbits.h
+Makefile.our
+sample_many
+sample_rand
+tags
+terminal.h
+ver_calc
+win32/
+
+# other commonly excluded patterns
+#
+*~
+*.BAK
+core*
+.DS_Store
+*.dSYM/
+*.[oa]
+.*.swp
+*,v

BUGS

@@ -1,12 +1,12 @@
 If you notice something wrong, strange or broken, try rereading:
 
-   README.FIRST
-   HOWTO.INSTALL
-   BUGS (this file)
+    README.FIRST
+    HOWTO.INSTALL
+    BUGS (this file)
 
 If that does not help, cd to the calc source directory and try:
 
-   make check
+    make check
 
 Look at the end of the output, it should say something like:
 
@@ -15,74 +15,133 @@ Look at the end of the output, it should say something like:
 
 If it does not, then something is really broken!
 
+To be sure that your version of calc is up to date.
+Look for the latest release on GitHub:
+
+    https://github.com/lcn2/calc/releases
+
+Just below latest GitHub release sectiop is something called:
+
+    > Assets
+
+Click in the triangle to open up the Assets then click on
+the approptiate package to download.
+
 If you made and modifications to calc beyond the simple Makefile
-configuration, try backing them out and see if things get better.
+configuration, try backing those changges out and see if things get
+better.
 
-To be sure that your version of calc is up to date, check out:
-
-	http://www.isthe.com/chongo/tech/comp/calc/calc-download.html
-
-The calc web site is located at:
-
-	http://www.isthe.com/chongo/tech/comp/calc/index.html
+If you have tried all of the above and things still are not right,
+then it may be time to send in a bug report.
 
 =-=
 
-If you have tried all of the above and things still are not right,
-then it may be time to send in a bug report.  You can send bug
-and bug fixes reports to:
+If you encounter a warning or error in compiling, or if you
+find a calc bug and you wish to send is a fix, we recommend
+that you submit your change using the GitHub pull request:
 
-	calc-bug-report at asthe dot com
+    https://github.com/lcn2/calc/pulls
 
-	NOTE: Remove spaces and replace 'at' with @, 'dot' with .
+=-=
 
-    This replaces the old calc-bugs at asthe dot com address.
+If you just want to send us a bug report, we recommend
+doing so via the GitHub issue process:
 
-    To be sure we see your EMail reporting a calc bug, please use the
-    following phase in your EMail Subject line:
+    https://github.com/lcn2/calc/issues
 
-	calc bug report
+If you see an existing issue that matches your problem, look
+over the notes and if needed, add your own observation,
+even if you just add to an existing issue:
 
-    That phrase in your subject line will help ensure your request
-    will get past our anti-spam filters.  You may have additional
-    words in your subject line.
+    I have this issue too
 
-    However, you may find it more helpful to simply subscribe
-    to the calc-tester mailing list (see below) and then to
-    send your report to that mailing list as a wider set calc
-    testers may be able to help you.
+If you don't see your issue addressed, then on the above
+GitHub web page, click on this button:
 
-When you send your report, please include the following information:
+    ((New Issue))
 
-    * a description of the problem
-    * the version of calc you are using (if you cannot get calc
-      to run, then send us the 4 #define lines from version.c)
-    * if you modified calc from an official patch, send me the mods you made
-    * the type of system you were using
-    * the type of compiler you were using
-    * any compiler warnings or errors that you saw
-    * cd to the calc source directory, and type:
+=-=
 
-	make debug > debug.out 2>&1		(sh, ksh, bash users)
-	make debug >& debug.out			(csh, tcsh users)
+If you prefer to not use GitHub, then you
+may send bug and bug fixes reports to:
 
-      and send the contents of the 'debug.out' file.
+    calc-bugrept-mail at asthe dot com
 
-Stack traces from core dumps are useful to send as well.
+    NOTE: Remove spaces and replace 'at' with @, 'dot' with .
 
-Fell free to use the above address to send in big fixes (in the form
+    NOTE: This replaces the old calc-bugs at asthe dot com address.
+
+PLEASE put following the SPECIAL PHRASE somewhere in your Email Subject line:
+
+    calc bug report
+
+You may add additional words to your subject line.
+
+Suggestion:
+
+    From time to time, the Email address and Subject SPECIAL PHRASE
+    may change so verify you have the current info by visiting:
+
+	http://www.isthe.com/chongo/tech/comp/calc/calc-bugrept.html
+
+IMPORTANT:
+
+    PLEASE use the above SPECIAL PHRASE somewhere in the Subject line or
+    the mail system won't deliver your Email message.
+
+Keep in mind that the best way to report on a calc bug is
+via the above mentioned calc GitHub issue URL.
+
+Please be patient as we cannot always respond to Email messages quickly.
+
+=-=
+
+When you send your report, via the calc GitHub issue URL or Email,
+please include the following information:
+
+    * A description of the problem
+
+    * Version of calc you are using
+
+	If you cannot compile calc, then look at version.c
+	and report the #define that start with:
+
+	    #define MAJOR_VER
+	    #define MINOR_VER
+	    #define MAJOR_PATCH
+	    #define MINOR_PATCH
+
+    * If you modified calc from an official patch,
+      send us the mods you made
+
+    * Type and version of the operating system
+
+    * Type and version of compiler
+
+    * Send us all compiler warnings or errors you find
+
+    * If calc dumped core, try to send us a core dump stack trace
+
+    * cd to the calc source directory, and send the contents
+      of debug.out produced by this command:
+
+	make debug > debug.out 2>&1
+
+Fell free to use the above address to send in bug fixes (in the form
 of a context diff patch).
 
 =-=
 
-Known bugs:
+Known bugs in calc:
 
     The output of the alg_config.cal resource file is bogus.
     We would welcome a replacement for this code.
 
+    Calc may not compile natively under Windows 11. See README.WINDOWS.
+
     We are sure some more bugs exist.  When you find them, please let
     us know!  See the above for details on how to report and were to
-    EMail your bug reports and hopefully patches to fix them.
+    Email your bug reports and hopefully patches to fix them.
 
 =-=
 
@@ -135,32 +194,7 @@ mis-features in calc:
 
 =-=
 
-To subscribe to the calc-tester mailing list, visit the following URL:
-
-	http://www.isthe.com/chongo/tech/comp/calc/calc-tester.html
-
-    This is a low volume moderated mailing list.
-
-    This mailing list replaces calc-tester at asthe dot com list.
-
-    If you need a human to help you with your mailing list subscription,
-    please send EMail to our special:
-
-	calc-tester-maillist-help at asthe dot com
-
-	NOTE: Remove spaces and replace 'at' with @, 'dot' with .
-
-    address.  To be sure we see your EMail asking for help with your
-    mailing list subscription, please use the following phase in your
-    EMail Subject line:
-
-	calc tester mailing list help
-
-    That phrase in your subject line will help ensure your
-    request will get past our anti-spam filters.  You may have
-    additional words in your subject line.
-
-## Copyright (C) 1999-2014  Landon Curt Noll
+## Copyright (C) 1999-2014,2021  Landon Curt Noll
 ##
 ## Calc is open software; you can redistribute it and/or modify it under
 ## the terms of the version 2.1 of the GNU Lesser General Public License
@@ -176,10 +210,6 @@ To subscribe to the calc-tester mailing list, visit the following URL:
 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
 ## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ##
-## @(#) $Revision: 30.5 $
-## @(#) $Id: BUGS,v 30.5 2014/10/12 12:23:43 chongo Exp $
-## @(#) $Source: /usr/local/src/bin/calc/RCS/BUGS,v $
-##
 ## Under source code control:	1994/03/18 14:06:13
 ## File existed as early as:	1994
 ##

CONTRIB-CODE

@@ -0,0 +1,100 @@
+Calc is open source. Contributions of code are welcome.
+
+We welcome and encourage you to send us:
+
+    * calc resource files (cal/*.cal files)
+    * calc shell scripts (cscript/*.calc files)
+    * builtin functions that you have modified or written, i.e.:
+	assocfunc.c comfunc.c func.c func.h
+	listfunc.c matfunc.c qfunc.c zfunc.c
+    * custom functions that you have modified or written
+    * help files modified or written (help/*)
+    * Makefile improvements (Makefile, */Makefile)
+    * other source code modifications (*.c, *.h)
+    * etc. (* */* :) )
+
+In order to consider integrating your code, we need:
+
+    * calc version you are working with (please try use the latest version)
+    * new help files or help file patches, if applicable (documentation)
+    * proposed text for the CHANGES file (brief description of what it does)
+    * regress.cal test patch as needed
+    * your source code and/or source code changes (:-))
+
+If you add functionality to calc, please be sure to modify/patch/add
+Makefiles, help files, cal/regress.cal test code as well.
+Regression test cases are vital to maintaining calc's level
+of correctness and helps us avoid code bug regression.
+
+Please try to generate a patch against the most recent
+version of calc, and if you use GitHub, the top of the
+master branch:
+
+    https://github.com/lcn2/calc
+
+The best way contribute to calc bug is to generate calc
+GitHub pull request:
+
+    https://github.com/lcn2/calc/pulls
+
+Your code needs to be contributed under either the 2.1 of the GNU
+Lesser General Public License (LGPL 2.1) or in the public domain.
+
+If you do not want to use calc GitHub, then send Email to:
+
+    calc-contrib-mail at asthe dot com
+
+    NOTE: Remove spaces and replace 'at' with @, 'dot' with .
+
+You MUST use following SPECIAL PHRASE in your Email Subject line:
+
+    calc contribution
+
+You may add additional words to your subject line.
+
+Suggestion:
+
+    From time to time, the Email address and Subject SPECIAL PHRASE
+    may change so verify you have the current info by visiting:
+
+	http://www.isthe.com/chongo/tech/comp/calc/calc-contrib.html
+
+IMPORTANT: If your Email doesn't contain the above phrase,
+	   then we WILL NOT SEE your Email.
+
+PLEASE BE SURE you have that SPECIAL PHRASE somewhere in the subject line!
+
+Keep in mind that the best way to report on a calc bug is to use
+the above mentioned calc GitHub procedure.
+
+Please be patient as we cannot always respond to Email messages quickly.
+
+=-=
+
+See also the calc wishlist by running the calc command:
+
+    ; help wishlist
+
+=-=
+
+## Copyright (C) 1999,2014,2021  Landon Curt Noll
+##
+## Calc is open software; you can redistribute it and/or modify it under
+## the terms of the version 2.1 of the GNU Lesser General Public License
+## as published by the Free Software Foundation.
+##
+## Calc is distributed in the hope that it will be useful, but WITHOUT
+## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
+## Public License for more details.
+##
+## A copy of version 2.1 of the GNU Lesser General Public License is
+## distributed with calc under the filename COPYING-LGPL.  You should have
+## received a copy with calc; if not, write to Free Software Foundation, Inc.
+## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+##
+## Under source code control:	1997/03/09 16:33:22
+## File existed as early as:	1997
+##
+## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
+## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/

COPYING

@@ -6,16 +6,12 @@ This file is Copyrighted
 
     This file is covered under the following Copyright:
 
-	Copyright (C) 1999-2014  Landon Curt Noll
+	Copyright (C) 1999-2021  Landon Curt Noll
 	All rights reserved.
 
 	Everyone is permitted to copy and distribute verbatim copies
 	of this license document, but changing it is not allowed.
 
-    # @(#) $Revision: 30.6 $
-    # @(#) $Id: COPYING,v 30.6 2014/10/12 12:23:43 chongo Exp $
-    # @(#) $Source: /usr/local/src/bin/calc/RCS/COPYING,v $
-
 -=-
 
 Calc is covered by the GNU Lesser General Public License
@@ -53,65 +49,6 @@ Calc is covered by the GNU Lesser General Public License
 	    Boston, MA  02110-1301
 	    USA
 
-    To subscribe to the calc-tester mailing list, visit the following URL:
-
-	    http://www.isthe.com/chongo/tech/comp/calc/calc-tester.html
-
-	This is a low volume moderated mailing list.
-
-	This mailing list replaces calc-tester at asthe dot com list.
-
-	If you need a human to help you with your mailing list subscription,
-	please send EMail to our special:
-
-	    calc-tester-maillist-help at asthe dot com
-
-	    NOTE: Remove spaces and replace 'at' with @, 'dot' with .
-
-	address.  To be sure we see your EMail asking for help with your
-	mailing list subscription, please use the following phase in your
-	EMail Subject line:
-
-	    calc tester mailing list help
-
-	That phrase in your subject line will help ensure your
-	request will get past our anti-spam filters.  You may have
-	additional words in your subject line.
-
--=-
-
-    Calc bug reports and calc bug fixes should be sent to:
-
-	    calc-bug-report at asthe dot com
-
-	    NOTE: Remove spaces and replace 'at' with @, 'dot' with .
-
-	This replaces the old calc-bugs at asthe dot com address.
-
-	To be sure we see your EMail reporting a calc bug, please use the
-	following phase in your EMail Subject line:
-
-	    calc bug report
-
-	That phrase in your subject line will help ensure your
-	request will get past our anti-spam filters.  You may have
-	additional words in your subject line.
-
-	However, you may find it more helpful to simply subscribe
-	to the calc-tester mailing list (see above) and then to
-	send your report to that mailing list as a wider set calc
-	testers may be able to help you.
-
--=-
-
-    The calc web site is located at:
-
-	http://www.isthe.com/chongo/tech/comp/calc/
-
-    NOTE: The EMail address uses 'asthe', while the web site uses 'isthe'.
-
--=-
-
 Calc's relationship to the GNU Lesser General Public License
 ------------------------------------------------------------
 

HOWTO.INSTALL

@@ -1,10 +1,23 @@
-Installing calc from the bzip2-ed tarball in 4 easy steps:
 
-    0)  If your platform supports i686 RPMs, you may want to go to:
+IMPORTANT: Please see the section at the bottom of this file for
+	   some important information on Makefiles used in calc.
 
-	    http://www.isthe.com/chongo/src/calc/
+###################################################################
+# IMPORTANT: DO NOT use make in parallel mode!!!		  #
+###################################################################
+# Unfortunately due to the complex dependency issues between	  #
+# Makefile, Makefile.ship and custom/Makefile, parallel make      #
+# is NOT recommended.  Sorry (tm Canada) :)			  #
+###################################################################
 
-	and use these RPMs:
+Installing calc from the bzip2-ed tarball: 4 easy steps:
+
+    (0) If your platform supports i686 RPMs, you may want to go to:
+
+	    https://github.com/lcn2/calc/releases
+
+	Open up the 'Assets' tag below a given release and
+	download these RPMs:
 
 	    * calc*.i686.rpm
 		- all that is needed if you just want to use calc
@@ -13,27 +26,46 @@ Installing calc from the bzip2-ed tarball in 4 easy steps:
 	        - calc *.h header and *.a lib files for use in other programs
 
 	    * calc.*.src.rpm
-	        - calc source in RPM package form
+	        - calc source via a SRPM package
 
-	The following 4 steps apply to calc source tree that comes from either:
+	Alternately to the above github link, you might try looking at
+	the RPMs under:
 
-		bunzip2 -c calc-*.tar.bz2 | tar -xvf -
+	    http://www.isthe.com/chongo/src/calc/
 
-	or from:
+=-=
 
-		rpm -ivh calc-*.src.rpm
-		cd /var/tmp
-		bunzip2 -c /usr/src/redhat/SOURCES/calc-*.tar.bz2 | tar -xvf -
+The following 4 steps apply to calc source tree that comes from either:
 
-    1)	Look at the makefile, and adjust it to suit your needs.
+	bunzip2 -c calc-*.tar.bz2 | tar -xvf -
 
-	The top level Makefile and the custom/Makefile require a GNU
+or from:
+
+	rpm -ivh calc-*.src.rpm
+	cd /var/tmp
+	bunzip2 -c /usr/src/redhat/SOURCES/calc-*.tar.bz2 | tar -xvf -
+
+4 steps:
+
+    (1)	Look at the makefile, and adjust it to suit your needs.
+
+	The top level Makefile and the custom/Makefile require a modern
 	Make (such as gmake) or an equivalently advanced make.	On many
-	targets, the default make is sufficent.  On FreeBSD for example,
-	one must use gmake instead of make.
+	targets, the default make is sufficient.  On FreeBSD for example,
+	probably want to use gmake instead of make.
 
-	If your target system does not have GNU Make (or equivalent), then
-	you should try using the Makefile.simple and custom/Makefile.simple
+	Some report that under macOS, one has to declare the target
+	to be Darwin.  So for macOS, one might have to do:
+
+	    # for macOS users only, force the target to be Darwin
+	    #
+	    make target=Darwin clobber
+	    make target=Darwin all
+	    make target=Darwin chk
+	    make target=Darwin install
+
+	If your target system does not have a modern Makefile (such as gmake),
+	then you should try using the Makefile.simple and custom/Makefile.simple
 	files:
 
 	    mv Makefile Makefile.gmake
@@ -46,10 +78,18 @@ Installing calc from the bzip2-ed tarball in 4 easy steps:
 	values should work.  If in doubt, follow the 'When in doubt'
 	suggestion.
 
-	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-	! If you are building under Windoz or a Windoz-like environment !
-	! (such as Cygwin or DJGPP), read the README.WINDOWS file.      !
-	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+	If you are using a modern make (such as gmake), you may override
+	any values set in the Makefile by adding them to Makefile.local
+	using the := directive.  For example:
+
+	    HAVE_STRING_H:= YES
+	    HAVE_TIMES_H:= YES
+	    SED:= /usr/local/bin/nsed
+
+	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+	! If you are building under Windows or a Windows-like environment !
+	! (such as Cygwin or DJGPP), read the README.WINDOWS file.        !
+	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
 	You should determine if these Makefile variables are reasonable:
 
@@ -57,7 +97,7 @@ Installing calc from the bzip2-ed tarball in 4 easy steps:
 	    BINDIR		Where to install calc binary files.
 	    LIBDIR		Where to install calc link library (*.a) files.
 	    CALC_SHAREDIR	Where to install calc help, .cal, startup, and
-	    			config files.
+				config files.
 
 	You may want to change the default installation locations for
 	these values, which are based on the 4 values listed above:
@@ -78,13 +118,13 @@ Installing calc from the bzip2-ed tarball in 4 easy steps:
 
 	    For example, if:
 
-	    	BINDIR= /usr/bin
+		BINDIR= /usr/bin
 		LIBDIR= /usr/lib
 		CALC_SHAREDIR= /usr/share/calc
 
 	    and if:
 
-	    	T= /var/tmp/testing
+		T= /var/tmp/testing
 
 	    Then the installation locations will be:
 
@@ -110,7 +150,7 @@ Installing calc from the bzip2-ed tarball in 4 easy steps:
 	    found below, comment out the Linux set and comment in that
 	    set or edit the gcc set or the common cc set as needed.
 
-	You may want to change these Makrfile variables from their defaults:
+	You may want to change these Makefile variables from their defaults:
 
 	    RANLIB
 
@@ -138,11 +178,11 @@ Installing calc from the bzip2-ed tarball in 4 easy steps:
 
 	   Adjust other Makefile variables as needed.
 
-    2)	build calc:
+    (2)	build calc:
 
 	The top level Makefile and the custom/Makefile require a GNU
 	Make (such as gmake) or an equivalently advanced make.	On many
-	targets, the default make is sufficent.  On FreeBSD for example,
+	targets, the default make is sufficient.  On FreeBSD for example,
 	one must use gmake instead of make.
 
 	If your target system does not have GNU Make (or equivalent), then
@@ -170,25 +210,194 @@ Installing calc from the bzip2-ed tarball in 4 easy steps:
 		make clobber
 		make calc-dynamic-only BLD_TYPE=calc-dynamic-only
 
-    3)	test calc:
+    (3)	test calc:
 
 	make check
 
-	==> If you run into problems, read the BUGS file and follow
-	    the instructions found in there.
-
 	NOTE: For a quiet check which only prints if something goes wrong:
 
 		make chk
 
-    4)	install calc:
+    (4)	install calc:
 
 	make install
 
-We suggest that you might want to read the README file and look at
-the calc help subsystem.  See the README file for details.
+We suggest that you might want to read the README.FIRST file and look at
+the calc help subsystem.  See also the README.md file.
 
-## Copyright (C) 1999-2007  Landon Curt Noll
+In general, if you run into problems, read the BUGS file and follow
+the instructions.
+
+=-=
+
+On calc Makefiles:
+
+How to tell the origin of of a Makefile:
+
+    The "# SRC: ... - ..." comment line near the top
+    of the file indicates the origin of this file.
+    In each segment below, we indicate what the SRC
+    comment like will read.
+
+SHELL= ...
+
+    On some systems, /bin/sh is a rather reduced shell with
+    deprecated behavior.
+
+    If your system has a up to date, bash shell, then
+    you may wish to edit the Makefile to use:
+
+	    SHELL= /bin/bash
+
+    On some systems such as macOS, the bash shell is very
+    far behind to the point where is cannot be depended on.
+    On such systems, the sh may be a much better alternative
+    shell for this Makefile to use:
+
+	    SHELL= /bin/sh
+
+Makefile.local
+
+    # SRC: Makefile.local - tweaks to the top level Makefile
+
+    Between releases, Makefile.local at the top of the master branch
+    will contain how we typically build calc and test calc (FYI: we
+    normally enable things such as -Werror -Wextra -pedantic).  When we
+    push out a release, Makefile.local will be stripped of non-comment
+    lines.  Thus, releases of calc, and, released "calc*.src.rpm"
+    files and the source tarballs, will have a Makefile.local with
+    only comments.
+
+    If the Makefile is not suitable for you (say because you fetch it
+    from the top of the master branch between releases), then you may
+    wish to remove all non-comment lines.  I.e., lines that do not start
+    with the # character.
+
+    This Makefile.local assumes you have a modern make command such as
+    the GNU make.  See Makefile.simple comment below if you do not
+    have such a modern make command.
+
+    In the calc GitHub repo, Makefile is the calc build environment
+    and Makefile.ship is the top level Makefile:
+
+	https://github.com/lcn2/calc
+
+Makefile
+
+    # SRC: Makefile.ship - top level Makefile
+
+    This is the main top level Makefile.
+
+    In calc packages such as RPMs, and the tar.bz2 source tarball,
+    Makefile.ship has been moved into Makefile.
+
+    In the calc GitHub repo, Makefile is the calc build environment
+    and Makefile.ship is the top level Makefile:
+
+	https://github.com/lcn2/calc
+
+    The Makefile.simple rule of Makefile.ship, when forming the
+    Makefile.simple file, removes lines from Makefile.ship between
+    pairs of '#if 0' AND '#endif':
+
+	#if 0
+	lines removed when forming Makefile.simple
+	...
+	lines removed when forming Makefile.simple
+	#endif
+
+    The '#if 0' AND '#endif' MUST be at the start of the line.
+    Any text after the '#if 0' OR '#endif' is ignored.
+
+    While they may look like a CPP directives, they are not.  The
+    inline awk script of the Makefile.simple rule does NOT allow
+    them to nest:
+
+	#if 0 /* DO NOT DO THIS */
+	lines removed when forming Makefile.simple
+	...
+	#if 0 /* DO NOT DO THIS */
+	...
+	#endif /* DO NOT DO THIS */
+	...
+	#endif /* DO NOT DO THIS */
+
+Makefile.simple
+
+    # SRC: Makefile.simple - non-GNU version
+
+    This is a non-GNU or simple Makefile designed for environments
+    that do not have a modern make command.
+
+    If you have a Makefile.simple file, use these commands to
+    form a Makefile:
+
+	if [ -f Makefile ]; then mv -f Makefile Makefile.orig; fi
+	cp Makefile.simple Makefile
+
+    The Makefile.simple rule from Makefile.ship is used to construct
+    this file from the contents of Makefile.ship.
+
+    In calc packages such as RPMs, and the tar.bz2 source the
+    Makefile.simple exists.  In the calc GitHub repo:
+
+	https://github.com/lcn2/calc
+
+    this file does NOT exist and must be made via the Makefile.simple
+    make rule.  Therefore, non-GNU and simple make commands are NOT
+    supported by the calc GitHub repo master branch.  Instead, you
+    need to extract Makefile.simple from one of the calc tar.bz2
+    source tarball source from a calc source mirror:
+
+	http://www.isthe.com/chongo/tech/comp/calc/calc-mirror.html
+
+custom/Makefile
+
+    # SRC: Makefile via make -f Makefile custom/Makefile
+
+    This is the custom directory Makefile.
+
+custom/Makefile.simple
+
+    # SRC: custom/Makefile.simple - non-GNU version
+
+    This is a non-GNU or simple Makefile for the custom directory
+    that is designed for environments that do not have a modern make
+    command.
+
+    In calc packages such as RPMs, and the tar.bz2 source the
+    Makefile.simple exists.  In the calc GitHub repo:
+
+	https://github.com/lcn2/calc
+
+    this file does NOT exist and must be made via the
+    custom/Makefile.simple make rule.  Therefore, non-GNU and simple
+    make commands are NOT supported by the calc GitHub repo master
+    branch.  Instead, you need to extract custom/Makefile.simple
+    from one of the calc tar.bz2 source tarball source from a calc
+    source mirror:
+
+	http://www.isthe.com/chongo/tech/comp/calc/calc-mirror.html
+
+cal/Makefile
+
+    # SRC: cal/Makefile
+
+    The Makefile for the cal sub-directory.
+
+cscript/Makefile
+
+    # SRC: cscript/Makefile
+
+    The Makefile for the cscript sub-directory.
+
+help/Makefile
+
+    # SRC: help/Makefile
+
+    The Makefile for the help sub-directory.
+
+## Copyright (C) 1999-2007,2021  Landon Curt Noll
 ##
 ## Calc is open software; you can redistribute it and/or modify it under
 ## the terms of the version 2.1 of the GNU Lesser General Public License
@@ -204,10 +413,6 @@ the calc help subsystem.  See the README file for details.
 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
 ## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ##
-## @(#) $Revision: 30.6 $
-## @(#) $Id: HOWTO.INSTALL,v 30.6 2007/10/16 12:22:22 chongo Exp $
-## @(#) $Source: /usr/local/src/bin/calc/RCS/HOWTO.INSTALL,v $
-##
 ## Under source code control:	1999/09/27 20:48:44
 ## File existed as early as:	1999
 ##

LIBRARY

@@ -216,7 +216,7 @@ Your program must handle parse/scan errors in one of two ways:
 		    /* report the parse/scan */
 		    if (calc_use_scanerr_jmpbuf == 0) {
 			    printf("parse error: %s\n", calc_err_msg);
-	    	    }
+		    }
 
 		    /* initialize calc after the longjmp */
 		    initialize();
@@ -320,10 +320,10 @@ The arbitrary precision integer routines define a structure called a ZVALUE.
 This is defined in zmath.h.  A ZVALUE contains a pointer to an array of
 integers, the length of the array, and a sign flag.  The array is allocated
 using malloc, so you need to free this array when you are done with a
-ZVALUE.	 To do this, you should call zfree with the ZVALUE as an argument
-(or call freeh with the pointer as an argument) and never try to free the
-array yourself using free.  The reason for this is that sometimes the pointer
-points to one of two statically allocated arrays which should NOT be freed.
+ZVALUE.	 To do this, you should call zfree() with the ZVALUE as an argument
+and never try to free the array yourself using free().  The reason for this
+is that sometimes the pointer points to a statically allocated arrays which
+should NOT be freed.
 
 The ZVALUE structures are passed to routines by value, and are returned
 through pointers.  For example, to multiply two small integers together,
@@ -615,14 +615,14 @@ These have the values 0, 1, and i.
 LAST THINGS LAST
 ----------------
 
-If you wish, when you are all doen you can call libcalc_call_me_last()
+If you wish, when you are all done you can call libcalc_call_me_last()
 to free a small amount of storage associated with the libcalc_call_me_first()
 call.  This is not required, but is does bring things to a closure.
 
 The function libcalc_call_me_last() takes no args and returns void.  You
 need call libcalc_call_me_last() only once.
 
-## Copyright (C) 1999  David I. Bell and Landon Curt Noll
+## Copyright (C) 1999,2021  David I. Bell and Landon Curt Noll
 ##
 ## Calc is open software; you can redistribute it and/or modify it under
 ## the terms of the version 2.1 of the GNU Lesser General Public License
@@ -638,10 +638,6 @@ need call libcalc_call_me_last() only once.
 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
 ## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ##
-## @(#) $Revision: 30.1 $
-## @(#) $Id: LIBRARY,v 30.1 2007/03/16 11:09:46 chongo Exp $
-## @(#) $Source: /usr/local/src/bin/calc/RCS/LIBRARY,v $
-##
 ## Under source code control:	1993/07/30 19:44:49
 ## File existed as early as:	1993
 ##

Makefile.local

@@ -0,0 +1,18 @@
+#
+# Makefile.local - local Makefile variables
+#
+# This file is included by Makefile after the last Makefile is set and
+# before the first make rule.  This makes this file suitable to override
+# Makefile variables.
+#
+# To replace a Makefile variale, use := symbols.  For example:
+#
+#	CCWERR:= -Werror
+#
+# NOTE: You need to remove the leading '#<whitespaces>' to take effect.
+# Comments start with a #-character.
+#
+# You can append to an existing Makefile variale using '+=' symbols.
+# For example:
+#
+#	CFLAGS+= -Ofast

QUESTIONS

@@ -0,0 +1,54 @@
+If you have a simple general question about calc, send Email to:
+
+    calc-quest-mail at asthe dot com
+
+    NOTE: Remove spaces and replace 'at' with @, and 'dot' with .
+
+PLEASE put following the SPECIAL PHRASE somewhere in your Email Subject line:
+
+    calc question
+
+You may add additional words to your subject line.
+
+IMPORTANT: If your Email doesn't contain the above phrase,
+	   then we WILL NOT SEE your Email.
+
+PLEASE BE SURE you have that SPECIAL PHRASE somewhere in the subject line!
+
+Suggestion:
+
+    From time to time, the Email address and Subject SPECIAL PHRASE
+    may change so verify you have the current info by visiting:
+
+	http://www.isthe.com/chongo/tech/comp/calc/calc-question.html
+
+Please limit your questions to general questions about calc.  We
+cannot go into great detail in our answers, nor can we do your
+homework, nor can we do much more than answer short general questions
+about calc.
+
+Please be patient as we cannot always respond to Email messages quickly.
+
+=-=
+
+## Copyright (C) 2021  Landon Curt Noll
+##
+## Calc is open software; you can redistribute it and/or modify it under
+## the terms of the version 2.1 of the GNU Lesser General Public License
+## as published by the Free Software Foundation.
+##
+## Calc is distributed in the hope that it will be useful, but WITHOUT
+## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
+## Public License for more details.
+##
+## A copy of version 2.1 of the GNU Lesser General Public License is
+## distributed with calc under the filename COPYING-LGPL.  You should have
+## received a copy with calc; if not, write to Free Software Foundation, Inc.
+## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+##
+## Under source code control:	2021/02/10 00:15:05
+## File existed as early as:	2021
+##
+## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
+## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/

README.FIRST

@@ -32,30 +32,30 @@ something that you type in.
 
 For list of help topics:
 
-    > help
+    ; help
 
 For overview of calc overview:
 
-    > help intro
-    > help overview
-    > help command
-    > help define
-    > help statement
-    > help variable
-    > help usage
+    ; help intro
+    ; help overview
+    ; help command
+    ; help define
+    ; help statement
+    ; help variable
+    ; help usage
 
 For list of builtin functions:
 
-    > help builtin
+    ; help builtin
 
 C programmers should note some unexpected differences in the calc syntax:
 
-    > help unexpected
+    ; help unexpected
 
 Calc is shipped with a standard collection of calc resource files.
 For a list of calc standard resource files see:
 
-    > help resource
+    ; help resource
 
 =-=
 
@@ -71,66 +71,33 @@ or run:
 
 for a wish/todo list.  Code contributions are welcome.
 
-=-=
+-=-
 
-To subscribe to the calc-tester mailing list, visit the following URL:
+If you you notice something wrong, strange or broken, see the file:
 
-	http://www.isthe.com/chongo/tech/comp/calc/calc-tester.html
+    BUGS
 
-    This is a low volume moderated mailing list.
+or run:
 
-    This mailing list replaces calc-tester at asthe dot com list.
+    calc help bugs
 
-    If you need a human to help you with your mailing list subscription,
-    please send EMail to our special:
-
-	calc-tester-maillist-help at asthe dot com
-
-	NOTE: Remove spaces and replace 'at' with @, 'dot' with .
-
-    address.  To be sure we see your EMail asking for help with your
-    mailing list subscription, please use the following phase in your
-    EMail Subject line:
-
-	calc tester mailing list help
-
-    That phrase in your subject line will help ensure your
-    request will get past our anti-spam filters.  You may have
-    additional words in your subject line.
+for information about how to report a bug.
 
 -=-
 
-Calc bug reports and calc bug fixes should be sent to:
+If you have a general question about calc, see the file:
 
-	calc-bug-report at asthe dot com
+    QUESTIONS
 
-	NOTE: Remove spaces and replace 'at' with @, 'dot' with .
+or run:
 
-    This replaces the old calc-bugs at asthe dot com address.
+    calc help questions
 
-    To be sure we see your EMail reporting a calc bug, please use the
-    following phase in your EMail Subject line:
-
-	calc bug report
-
-    That phrase in your subject line will help ensure your
-    request will get past our anti-spam filters.  You may have
-    additional words in your subject line.
-
-    However, you may find it more helpful to simply subscribe
-    to the calc-tester mailing list (see above) and then to
-    send your report to that mailing list as a wider set calc
-    testers may be able to help you.
+for information about how to ask a question.
 
 -=-
 
-The calc web site is located at:
-
-    http://www.isthe.com/chongo/tech/comp/calc/
-
-NOTE: The EMail address uses 'asthe', while the web site uses 'isthe'.
-
-## Copyright (C) 1999,2014  Landon Curt Noll
+## Copyright (C) 1999,2014,2017,2021  Landon Curt Noll
 ##
 ## Calc is open software; you can redistribute it and/or modify it under
 ## the terms of the version 2.1 of the GNU Lesser General Public License
@@ -146,10 +113,6 @@ NOTE: The EMail address uses 'asthe', while the web site uses 'isthe'.
 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
 ## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ##
-## @(#) $Revision: 30.3 $
-## @(#) $Id: README,v 30.3 2014/10/12 12:23:43 chongo Exp $
-## @(#) $Source: /usr/local/src/bin/calc/RCS/README,v $
-##
 ## Under source code control:	1995/10/25 05:27:59
 ## File existed as early as:	1995
 ##

README.RELEASE

@@ -0,0 +1,117 @@
+On calc versions and releases
+
+Calc version numbers have 4 levels.  For example:
+
+	 ++=== top 2 levels: calc builtin functions compatibility
+	 ||
+	vvvv
+
+	2.14.0.8
+	 \\\\\\
+	^  \\\\----> top 3 levels: calc important code base change
+	|
+	+--- top version level: internal representation compatibility
+
+The top version level (e.g., 2) refers to the internal representation
+of values.  Any library or hardware linked/built for calc 2 will be able
+to use values from other 2.x.y.z versions.
+
+The top 2 levels (e.g., 2.14) refers to a specific compatible set of
+builtin functions.  Calc interpreted code (such as calc resource files)
+written for, say calc 2.14, will be able to use the same set of builtin
+functions for any other 2.14.y.z version.  Any new builtin functions or
+significant changes to existing builtin functions would be introduced in
+a later release such as version 2.15.y.z.  While calc scripts written for
+2.14.y.z will highly likely be able to run under version 2.15.y.z, any
+new builtin functions added in calc 2.15 may collide with an identically
+named used defined function.
+
+The top 3 levels (e.g., 2.14.0) change to reflect an important change to
+the code base such as a bug fix or performance improvement.  There was
+neither a change to the internal representation format (a top level
+version change), nor were there new calc builtins introduced in such
+a top 3 level release.
+
+There are 3 classes of changes to the calc source tree:
+
+alpha		=> untagged GitHub commit
+
+	Any untagged commit to the GitHub master branch should be
+	considered as alpha code that may make calc unstable.
+
+	While we try to avoid breaking the calc code with commits,
+	there is a risk that picking up such a change could
+	negatively impact the code.
+
+tested		=> tagged GitHub pre-release commit
+
+	A new version of calc has been released and has recently passed
+	regression testing on at least to different platforms and chip
+	architectures.
+
+	The "tested" class was historically called "untested",
+	however this term was misleading as such releases ARE tested.
+	Since 2.14.0.13 we have used the term "tested".
+
+	All tested releases are tagged with a new version number.
+	Such releases have GitHub assets such as a source tarball,
+	zip file, source rpm, development rpm and binary rpm.  See the
+	orange "Pre-release" GitHub releases under:
+
+	    https://github.com/lcn2/calc/releases
+
+	 At the bottom of a given release is a "> Assets" that may
+	 be opened to reveal down-loadable files.
+
+production	=> tagged GitHub release commit
+
+	A new version of calc has been released and has undergone
+	extensive testing over time over a number of platforms.
+	Sometimes a "tested" release that is found work well over
+	a period of time will be re-released with a new version
+	number as a "production" release.
+
+	The latest production GitHub release is marked with green
+	"Latest" label under:
+
+	    https://github.com/lcn2/calc/releases
+
+	A release that has neither an orange "Pre-release" nor
+	a green "Latest" label is a prior production class release.
+
+	At the bottom of a given release is a "> Assets" that may
+	be opened to reveal down-loadable files.
+
+	Production class code where stability is critical should use a
+	"production" release.
+
+A historical note and apology:
+
+In the past, some version number changes were made that did not fully
+reflect the above version number or change class.  Moreover older terms
+such as "stable" and "unstable" were misleading and did not properly
+reflect the nature of the change.  Sorry!  The purpose of this document
+is to try and bring a better level of conformity to source code updates,
+tagged releases and version numbers.
+
+## Copyright (C) 2021  Landon Curt Noll
+##
+## Calc is open software; you can redistribute it and/or modify it under
+## the terms of the version 2.1 of the GNU Lesser General Public License
+## as published by the Free Software Foundation.
+##
+## Calc is distributed in the hope that it will be useful, but WITHOUT
+## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
+## Public License for more details.
+##
+## A copy of version 2.1 of the GNU Lesser General Public License is
+## distributed with calc under the filename COPYING-LGPL.  You should have
+## received a copy with calc; if not, write to Free Software Foundation, Inc.
+## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+##
+## Under source code control:	2021/12/12 19:36:26
+## File existed as early as:	2021
+##
+## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
+## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/

README.WINDOWS

@@ -1,14 +1,67 @@
-Dear calc user on a Windoz based system,
+Dear calc user on a Windows based system,
 
 See the HOWTO.INSTALL file for information on how to build and install calc.
 See also the README file.
 
-NOTE: The main developers do not have access to a Windoz based platform.
-      While we will make an effort to not break calc Windoz based system,
-      our lack of a Windoz test environment will mean we will make mistakes
-      from time to time.  Hopefully Windowz users can overcome these mistakes.
+BTW: While we are unable to use Windows 11, we welcome
+     Windows 11 developers to try compiling calc natively
+     (instead of via a Linux virtual machine).  If you are
+     able to compile Windows 11 natively, we would welcome
+     GitHub pull requests showing any needed modifications:
+
+	https://github.com/lcn2/calc/pulls
+
+     Please also add notes to the 'Compiling calc under Windows 11'
+     section in README.WINDOWS file.
+
+NOTE: The main developers do not have access to a Windows based platform.
+      While we will make an effort to not break calc Windows based system,
+      our lack of a Windows test environment will mean we will make mistakes
+      from time to time.  Hopefully Windows users can overcome these mistakes.
       Of course you are welcome to send us any patches that fix your
-      Windoz build environment.
+      Windows build environment.
+
+=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+=-= Compiling calc under Windows 11 =-=
+=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+
+We were given this advice from a Windows 11 developer:
+
+    Windows 11 users should try:
+
+	https://git-scm.com/downloads
+
+	    When you run the installer wizard, make sure you choose/check
+	    the git bash installer option.
+
+	https://www.mingw-w64.org/
+
+	    Runtime environment for GCC & LLVM for 32 and 64 bit Windows
+
+	    We suggest Windows 11 users consider using MINGW64.
+
+We would prefer a Windows 11 solution that does not require a Windows 11
+developer to install a Linux virtual machine.  Nevertheless, a Windows 11
+user might want to use the Microsoft Windows Subsystem (WSL) for Linux:
+
+	https://docs.microsoft.com/en-us/windows/wsl/
+
+    We have been told that you will need to turn on virtualization
+    to use this WSL subsystem.
+
+=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+=-= Compiling calc under Windows 10 via Windows Subsystem for Linux (WSL) =-=
+=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+
+It has been reported that calc version 2.12.6.4 has been successfully
+compiled, installed and running on Windows 10 on 2018 Jan 21.
+
+We were told:
+
+  "The Windows Subsystem for Linux (WSL) is a new Windows 10 feature that
+   enables you to run native Linux command-line tools directly on Windows"
+
+   https://docs.microsoft.com/cs-cz/windows/wsl/about
 
 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 =-= compiling with Cygwin =-=
@@ -63,9 +116,9 @@ needs.
 
 In particular:
 
-	Just copy the win32/*.[ch] files up into the top level calc
-	source directory, edit them (if needed) and build using the
-	Cygwin GCC compiler and Cygwin build environment.
+    Just copy the win32/*.[ch] files up into the top level calc
+    source directory, edit them (if needed) and build using the
+    Cygwin GCC compiler and Cygwin build environment.
 
 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 =-= compiling under DJGPP =-=
@@ -111,9 +164,11 @@ recommends the following settings:
 	CATDIR= /dev/env/DJDIR/man/cat1
 	NROFF= groff
 	CALCPATH= .;./cal;~/.cal;${CALC_SHAREDIR};${CUSTOMCALDIR}
-	CALCRC= ${CALC_SHAREDIR}/startup;~/.calcrc;./.calcinit
+	CALCRC= ./.calcinit;~/.calcrc;${CALC_SHAREDIR}/startup
 	CALCPAGER= less.exe -ci
-	DEBUG= -O2 -gstabs+ -DWINDOZ
+	DEBUG= -O2 -gstabs+ -D_WIN32
+	HAVE_ENVIRON=-DHAVE_NO_ENVIRON
+	HAVE_ARC4RANDOM=-DHAVE_NO_ARC4RANDOM
 
 The 'Linux set' or 'gcc set' (see the Select your compiler type section)
 should work for DJGPP systems if you set the above Makefile variables.
@@ -126,7 +181,7 @@ Follow those recommendations.  In cases where they conflict with
 the above Makefile list, follow the recommendation in the Makefile.
 
 
-## Copyright (C) 2002-2009  Landon Curt Noll and Thomas Jones-Low
+## Copyright (C) 2002-2009,2021  Landon Curt Noll and Thomas Jones-Low
 ##
 ## Calc is open software; you can redistribute it and/or modify it under
 ## the terms of the version 2.1 of the GNU Lesser General Public License
@@ -142,10 +197,6 @@ the above Makefile list, follow the recommendation in the Makefile.
 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
 ## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ##
-## @(#) $Revision: 30.2 $
-## @(#) $Id: README.WINDOWS,v 30.2 2009/03/14 02:29:31 chongo Exp $
-## @(#) $Source: /usr/local/src/bin/calc/RCS/README.WINDOWS,v $
-##
 ## Under source code control:	2001/02/25 14:00:05
 ## File existed as early as:	2001
 ##

README.md

@@ -0,0 +1,263 @@
+# What is calc?
+
+Calc is an interactive calculator which provides for easy large
+numeric calculations, but which also can be easily programmed
+for difficult or long calculations.	 It can accept a command line
+argument, in which case it executes that single command and exits.
+Otherwise, it enters interactive mode.  In this mode, it accepts
+commands one at a time, processes them, and displays the answers.
+In the simplest case, commands are simply expressions which are
+evaluated.  For example, the following line can be input:
+
+```sh
+3 * (4 + 1)
+```
+
+and the calculator will print:
+
+```sh
+15
+```
+
+Calc has the usual collection of arithmetic operators +, -, /, * as
+well as ^ (exponentiation), % (modulus) and // (integer divide).
+For example:
+
+```sh
+3 * 19^43 - 1
+```
+
+will produce:
+
+```sh
+29075426613099201338473141505176993450849249622191102976
+```
+
+Notice that calc values can be very large.  For example:
+
+```sh
+2^23209-1
+```
+
+will print:
+
+```sh
+402874115778988778181873329071 ... many digits ... 3779264511
+```
+
+The special '.' symbol (called dot), represents the result of the
+last command expression, if any.  This is of great use when a series
+of partial results are calculated, or when the output mode is changed
+and the last result needs to be redisplayed.  For example, the above
+result can be modified by typing:
+
+```sh
+. % (2^127-1)
+```
+
+and the calculator will print:
+
+```sh
+47385033654019111249345128555354223304
+```
+
+For more complex calculations, variables can be used to save the
+intermediate results.  For example, the result of adding 7 to the
+previous result can be saved by typing:
+
+```sh
+curds = 15
+whey = 7 + 2*curds
+```
+
+Functions can be used in expressions.  There are a great number of
+pre-defined functions.  For example, the following will calculate
+the factorial of the value of 'whey':
+
+```sh
+fact(whey)
+```
+
+and the calculator prints:
+
+```sh
+13763753091226345046315979581580902400000000
+```
+
+The calculator also knows about complex numbers, so that typing:
+
+```sh
+(2+3i) * (4-3i)
+cos(.)
+```
+
+will print:
+
+```sh
+17+6i
+-55.50474777265624667147+193.9265235748927986537i
+```
+
+The calculator can calculate transcendental functions, and accept and
+display numbers in real or exponential format. For example, typing:
+
+```sh
+config("display", 70),
+epsilon(1e-70),
+sin(1)
+```
+
+prints:
+
+```sh
+0.8414709848078965066525023216302989996225630607983710656727517099919104
+```
+
+Calc can output values in terms of fractions, octal or hexadecimal.
+For example:
+
+```sh
+config("mode", "fraction"),
+(17/19)^23
+print
+base(16),
+(19/17)^29
+print
+log(79.3i)
+```
+
+ will print:
+
+```sh
+19967568900859523802559065713/257829627945307727248226067259
+
+0x9201e65bdbb801eaf403f657efcf863/0x5cd2e2a01291ffd73bee6aa7dcf7d1
+
+0x17b5164ac24ee836bf/0xc7b7a8e3ef5fcf752+0x883eaf5adadd26be3/0xc7b7a8e3ef5fcf752i
+```
+
+All numbers are represented as fractions with arbitrarily large
+numerators and denominators which are always reduced to lowest terms.
+Real or exponential format numbers can be input and are converted
+to the equivalent fraction.  Hex, binary, or octal numbers can be
+input by using numbers with leading '0x', '0b' or '0' characters.
+Complex numbers can be input using a trailing 'i', as in '2+3i'.
+Strings and characters are input by using single or double quotes.
+
+Commands are statements in a C-like language, where each input
+line is treated as the body of a procedure.  Thus the command
+line can contain variable declarations, expressions, labels,
+conditional tests, and loops.  Assignments to any variable name
+will automatically define that name as a global variable.  The
+other important thing to know is that all non-assignment expressions
+which are evaluated are automatically printed.  Thus, you can evaluate
+an expression's value by simply typing it in.
+
+Many useful built-in mathematical functions are available.  Use the:
+
+```sh
+help builtin
+```
+
+command to list them.
+
+You can also define your own functions by using the 'define' keyword,
+followed by a function declaration very similar to C.
+
+```sh
+define f2(n)
+{
+	local ans;
+
+	ans = 1;
+	while (n > 1)
+		ans *= (n -= 2);
+	return ans;
+}
+```
+
+Thus the input:
+
+```sh
+f2(79)
+```
+
+will produce:
+
+```sh
+1009847364737869270905302433221592504062302663202724609375
+```
+
+Functions which only need to return a simple expression can be defined
+using an equals sign, as in the example:
+
+```sh
+define sc(a,b) = a^3 + b^3
+```
+
+Thus the input:
+
+```sh
+sc(31, 61)
+```
+
+will produce:
+
+```sh
+256772
+```
+
+Variables in functions can be defined as either 'global', 'local',
+or 'static'.  Global variables are common to all functions and the
+command line, whereas local variables are unique to each function
+level, and are destroyed when the function returns.  Static variables
+are scoped within single input files, or within functions, and are
+never destroyed.  Variables are not typed at definition time, but
+dynamically change as they are used.
+
+For more information about the calc language and features, try:
+
+```sh
+help overview
+```
+
+Calc has a help command that will produce information about
+every builtin function, command as well as a number of other
+aspects of calc usage.  Try the command:
+
+```sh
+help help
+```
+
+for and overview of the help system.  The command:
+
+```sh
+help builtin
+```
+
+provides information on built-in mathematical functions, whereas:
+
+```sh
+help asinh
+```
+
+will provides information a specific function.  The following
+help files:
+
+```sh
+help command
+help define
+help operator
+help statement
+help variable
+```
+
+provide a good overview of the calc language.  If you are familiar
+with C, you should also try:
+
+```sh
+help unexpected
+```
+
+It contains information about differences between C and calc
+that may surprise C programmers.

SECURITY.md

@@ -0,0 +1,14 @@
+# Security Policy
+
+## Supported Versions
+
+The most recent version of calc is supported with security updates.
+
+If the most recent stable of calc is also supported with security updates.
+
+## Reporting a Vulnerability
+
+To report a vulnerability, please review the BUGS file, or enter
+the calc command:
+
+    ; help BUGS

addop.c

@@ -1,7 +1,7 @@
 /*
  * addop - add opcodes to a function being compiled
  *
- * Copyright (C) 1999-2007  David I. Bell and Ernest Bowen
+ * Copyright (C) 1999-2007,2021  David I. Bell and Ernest Bowen
  *
  * Primary author:  David I. Bell
  *
@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: addop.c,v 30.1 2007/03/16 11:09:46 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/RCS/addop.c,v $
- *
  * Under source code control:	1990/02/15 01:48:10
  * File existed as early as:	before 1990
  *
@@ -32,6 +28,7 @@
 
 #include <stdio.h>
 #include "calc.h"
+#include "alloc.h"
 #include "opcodes.h"
 #include "str.h"
 #include "func.h"
@@ -40,6 +37,9 @@
 #include "symbol.h"
 
 
+#include "banned.h"	/* include after system header <> includes */
+
+
 #define FUNCALLOCSIZE	20	/* reallocate size for functions */
 #define OPCODEALLOCSIZE 100	/* reallocate size for opcodes in functions */
 

align32.c

@@ -1,7 +1,7 @@
 /*
  * align32 - determine if 32 bit accesses must be aligned
  *
- * Copyright (C) 1999  Landon Curt Noll
+ * Copyright (C) 1999,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: align32.c,v 30.1 2007/03/16 11:09:46 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/RCS/align32.c,v $
- *
  * Under source code control:	1995/11/23 05:18:06
  * File existed as early as:	1995
  *
@@ -38,6 +34,10 @@
 #include <unistd.h>
 #endif
 
+
+#include "banned.h"	/* include after system header <> includes */
+
+
 static void buserr(void);	/* catch alignment errors */
 
 

alloc.h

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.5 $
- * @(#) $Id: alloc.h,v 30.5 2014/08/24 21:56:51 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/RCS/alloc.h,v $
- *
  * Under source code control:	1990/02/15 01:48:29
  * File existed as early as:	before 1990
  *
@@ -46,9 +42,7 @@
 # include <string.h>
 
 #else
-#if defined(_WIN32) && defined(NOTCYGWIN)
 #include <stdio.h>
-#endif
 
 # if defined(HAVE_NEWSTR)
 E_FUNC void *memcpy();

assocfunc.c

@@ -1,7 +1,7 @@
 /*
  * assocfunc - association table routines
  *
- * Copyright (C) 1999-2007  David I. Bell
+ * Copyright (C) 1999-2007,2021  David I. Bell
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.3 $
- * @(#) $Id: assocfunc.c,v 30.3 2014/09/30 00:55:11 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/RCS/assocfunc.c,v $
- *
  * Under source code control:	1993/07/20 23:04:27
  * File existed as early as:	1993
  *
@@ -40,6 +36,9 @@
 #include "value.h"
 
 
+#include "banned.h"	/* include after system header <> includes */
+
+
 #define MINHASHSIZE	31	/* minimum size of hash tables */
 #define GROWHASHSIZE	50	/* approximate growth for hash tables */
 #define CHAINLENGTH	10	/* desired number of elements on a hash chain */

banned.h

@@ -0,0 +1,180 @@
+/*
+ * banned - optionally ban dangerous functions
+ *
+ * Unless UNBAN is defined, this file will turn the use
+ * of certain dangerous functions into syntax errors.
+ *
+ * In the case of calc, we are motivated in part by the desire for
+ * calc to correctly calculate: even during extremely long calculations.
+ *
+ * If UNBAN is NOT defined, then calling certain functions
+ * will result in a syntax error.
+ *
+ * If we define UNBAN, then the effect of this file is disabled.
+ *
+ * The banned.h attempts to ban the use of certain dangerous functions
+ * that, if improperly used, could compromise the computational integrity
+ * if calculations.
+ *
+ * In the case of calc, we are motivated in part by the desire for calc
+ * to correctly calculate: even during extremely long calculations.
+ *
+ * If UNBAN is NOT defined, then calling certain functions
+ * will result in a call to a non-existent function (link error).
+ *
+ * While we do NOT encourage defining UNBAN, there may be
+ * a system / compiler environment where re-defining a
+ * function may lead to a fatal compiler complication.
+ * If that happens, consider compiling as:
+ *
+ *	make clobber all chk CCBAN=-DUNBAN
+ *
+ * as see if this is a work-a-round.
+ *
+ * If YOU discover a need for the -DUNBAN work-a-round, PLEASE tell us!
+ * Please send us a bug report.  See the file:
+ *
+ *	BUGS
+ *
+ * or the URL:
+ *
+ *	http://www.isthe.com/chongo/tech/comp/calc/calc-bugrept.html
+ *
+ * for how to send us such a bug report.
+ *
+ * Copyright (C) 2021  Landon Curt Noll
+ *
+ * Calc is open software; you can redistribute it and/or modify it under
+ * the terms of the version 2.1 of the GNU Lesser General Public License
+ * as published by the Free Software Foundation.
+ *
+ * Calc is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
+ * Public License for more details.
+ *
+ * A copy of version 2.1 of the GNU Lesser General Public License is
+ * distributed with calc under the filename COPYING-LGPL.  You should have
+ * received a copy with calc; if not, write to Free Software Foundation, Inc.
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Under source code control:	2021/03/06 21:07:31
+ * File existed as early as:	2021
+ *
+ * chongo <was here> /\oo/\	http://www.isthe.com/chongo/
+ * Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
+ */
+
+
+#if !defined(PRE_HAVE_BAN_PRAGMA_H)
+#include "have_ban_pragma.h"
+#endif /* ! PRE_HAVE_BAN_PRAGMA_H */
+
+
+#if !defined(INCLUDE_BANNED_H)
+#define INCLUDE_BANNED_H
+
+/*
+ * If we define UNBAN, then the effect of this file is disabled.
+ */
+#if !defined(UNBAN)
+
+/*
+ * In the spirit of:
+ *
+ *	https://github.com/git/git/blob/master/banned.h
+ *
+ * we will ban the use of certain unsafe functions by turning
+ * then into function calls that do not exist.
+ *
+ * In the case of calc, we are motivated in part by the desire
+ * for calc to correctly calculate: even during extremely long
+ * calculations.
+ *
+ * If UNBAN is NOT defined, then calling certain functions
+ * will result in a syntax error.
+ *
+ * Unlike the above URL, we suggest an alternative function.
+ * In many cases, additional logic is required to use the
+ * alternative function, we cannot simply replace one function
+ * with another.
+ */
+
+/*
+ * If one is not careful, strcpy() can lead to buffer overflows.
+ * Use strlcpy() instead.
+ */
+#if defined(HAVE_PRAGMA_GCC_POSION)
+#undef strcpy
+#pragma GCC poison strcpy
+#endif /* HAVE_PRAGMA_GCC_POSION */
+
+/*
+ * If one is not careful, strcat() can lead to buffer overflows.
+ * Use strlcat() instead.
+ */
+#if defined(HAVE_PRAGMA_GCC_POSION)
+#undef strcat
+#pragma GCC poison strcat
+#endif /* HAVE_PRAGMA_GCC_POSION */
+
+/*
+ * If one is not careful, strncpy() can lead to buffer overflows.
+ * Use memccpy() instead.
+ */
+#if defined(HAVE_PRAGMA_GCC_POSION)
+#undef strncpy
+#pragma GCC poison strncpy
+#endif /* HAVE_PRAGMA_GCC_POSION */
+
+/*
+ * If one is not careful, strncat() can lead to buffer overflows.
+ * Use memccpy() instead.
+ */
+#if defined(HAVE_PRAGMA_GCC_POSION)
+#undef strncat
+#pragma GCC poison strncat
+#endif /* HAVE_PRAGMA_GCC_POSION */
+
+/*
+ * If one is not careful, sprintf() can lead to buffer overflows.
+ * Use snprintf() instead.
+ */
+#if defined(HAVE_PRAGMA_GCC_POSION)
+#undef sprintf
+#pragma GCC poison sprintf
+#endif /* HAVE_PRAGMA_GCC_POSION */
+
+/*
+ * If one is not careful, vsprintf() can lead to buffer overflows.
+ * Use vsnprintf() instead.
+ */
+#if defined(HAVE_PRAGMA_GCC_POSION)
+#undef vsprintf
+#pragma GCC poison vsprintf
+#endif /* HAVE_PRAGMA_GCC_POSION */
+
+/*
+ * XXX - As of 2021, functions such as:
+ *
+ *	gmtime_s
+ *	localtime_s
+ *	ctime_s
+ *	asctime_s
+ *
+ * are not universal.  We cannot yet ban the following
+ * functions because we do not have a portable AND
+ * widely available alternative.  Therefore we just
+ * have to be extra careful when using:
+ *
+ *	gmtime
+ *	localtime
+ *	ctime
+ *	ctime_r
+ *	asctime
+ *	asctime_r
+ */
+
+#endif /* !UNBAN */
+
+#endif /* !INCLUDE_BANNED_H */

blkcpy.c

@@ -1,7 +1,7 @@
 /*
  * blkcpy - general values and related routines used by the calculator
  *
- * Copyright (C) 1999-2007  Landon Curt Noll and Ernest Bowen
+ * Copyright (C) 1999-2007,2021  Landon Curt Noll and Ernest Bowen
  *
  * Primary author:  Landon Curt Noll
  *
@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: blkcpy.c,v 30.2 2013/08/11 08:41:38 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/RCS/blkcpy.c,v $
- *
  * Under source code control:	1997/04/18 20:41:26
  * File existed as early as:	1997
  *
@@ -33,12 +29,16 @@
 #include <stdio.h>
 #include <sys/types.h>
 #include "calc.h"
+#include "alloc.h"
 #include "value.h"
 #include "file.h"
 #include "blkcpy.h"
 #include "str.h"
 
 
+#include "banned.h"	/* include after system header <> includes */
+
+
 /*
  * copystod - copy num indexed items from source value to destination value
  *
@@ -1044,7 +1044,7 @@ copyblk2num(BLOCK *sblk, long ssi, long num, NUMBER *dnum, long dsi,
 	NUMBER *ret;		/* cloned and modified numerator */
 #if CALC_BYTE_ORDER == BIG_ENDIAN
 	HALF *swapped;		/* byte swapped input data */
-	unsigned long halflen;	/* length of the input ounded up to HALFs */
+	unsigned long halflen;	/* length of the input rounded up to HALFs */
 	HALF *h;		/* copy byteswap pointer */
 	unsigned long i;
 #endif

blkcpy.h

@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.3 $
- * @(#) $Id: blkcpy.h,v 30.3 2014/08/24 21:56:51 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/RCS/blkcpy.h,v $
- *
  * Under source code control:	1997/04/18 20:41:25
  * File existed as early as:	1997
  *

block.c

@@ -1,7 +1,7 @@
 /*
  * block - fixed, dynamic, fifo and circular memory blocks
  *
- * Copyright (C) 1999-2007  Landon Curt Noll and Ernest Bowen
+ * Copyright (C) 1999-2007,2021  Landon Curt Noll and Ernest Bowen
  *
  * Primary author:  Landon Curt Noll
  *
@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: block.c,v 30.1 2007/03/16 11:09:46 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/RCS/block.c,v $
- *
  * Under source code control:	1997/02/27 00:29:40
  * File existed as early as:	1997
  *
@@ -32,6 +28,11 @@
 
 
 #include <stdio.h>
+#include "have_string.h"
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif
+#include "alloc.h"
 #include "value.h"
 #include "zmath.h"
 #include "config.h"
@@ -40,6 +41,10 @@
 #include "str.h"
 #include "calcerr.h"
 
+
+#include "banned.h"	/* include after system header <> includes */
+
+
 #define NBLOCKCHUNK 16
 
 STATIC long nblockcount = 0;
@@ -151,7 +156,7 @@ blk_free(BLOCK *blk)
  *	blk	- the BLOCK to check
  *
  * returns:
- *	if all is ok, otherwise math_error() is called and this
+ *	if all is OK, otherwise math_error() is called and this
  *	function does not return
  */
 S_FUNC void
@@ -295,7 +300,7 @@ blkrealloc(BLOCK *blk, int newlen, int newchunk)
 	 * Set the data length
 	 *
 	 * We also know that the new block is not empty since we have
-	 * already dealth with that case above.
+	 * already dealt with that case above.
 	 *
 	 * After this section of code, limit and datalen will be
 	 * correct in terms of the new type.

block.h

@@ -1,7 +1,7 @@
 /*
  * block - fixed, dynamic, fifo and circular memory blocks
  *
- * Copyright (C) 1999-2007,2014  Landon Curt Noll and Ernest Bowen
+ * Copyright (C) 1999-2007,2014,2021  Landon Curt Noll and Ernest Bowen
  *
  * Primary author:  Landon Curt Noll
  *
@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.3 $
- * @(#) $Id: block.h,v 30.3 2014/08/24 21:56:51 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/RCS/block.h,v $
- *
  * Under source code control:	1997/02/21 05:03:39
  * File existed as early as:	1997
  *
@@ -59,7 +55,7 @@
  *		blkchunk defaults to BLK_CHUNKSIZE
  *
  *	blkfree(x)
- *		Reduce storage down to 0 octetes.
+ *		Reduce storage down to 0 octets.
  *
  *	size(x)
  *		The length of data stored in the block.
@@ -92,7 +88,7 @@
  *	blkmove(dest, src, length [, dest_offset [, src_offset]])
  *		0 <= length <= blksize(x)
  *		offset's are restricted in value by block type
- *		overlapping moves are handeled correctly
+ *		overlapping moves are handled correctly
  *
  *	blkccpy(dest, src, stopval, length [, dest_offset [, src_offset]])
  *		0 <= length <= blksize(x)
@@ -108,7 +104,7 @@
  *		b = a*k for some integer k >= 1
  *
  *	scatter(src, dest1, dest2 [, dest3 ] ...)
- *		copy sucessive octets from src into dest1, dest2, ...
+ *		copy successive octets from src into dest1, dest2, ...
  *		    restarting with dest1 after end of list
  *		stops at end of src
  *
@@ -188,7 +184,7 @@ EXTERN int blk_debug;	/* 0 => debug off */
 /* length of data stored in a block */
 #define blklen(blk) ((blk)->datalen)
 
-/* block footpint in memory */
+/* block footprint in memory */
 #define blksizeof(blk) ((blk)->maxsize)
 
 /* block allocation chunk size */

byteswap.c

@@ -1,7 +1,7 @@
 /*
  * byteswap - byte swapping routines
  *
- * Copyright (C) 1999  Landon Curt Noll
+ * Copyright (C) 1999,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: byteswap.c,v 30.2 2013/08/11 08:41:38 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/RCS/byteswap.c,v $
- *
  * Under source code control:	1995/10/11 04:44:01
  * File existed as early as:	1995
  *
@@ -33,11 +29,14 @@
 #include "byteswap.h"
 
 
+#include "banned.h"	/* include after system header <> includes */
+
+
 /*
  * swap_b8_in_HALFs - swap 8 and if needed, 16 bits in an array of HALFs
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a HALF array to swap
  *	len	- length of the src HALF array
@@ -77,11 +76,11 @@ swap_b8_in_HALFs(HALF *dest, HALF *src, LEN len)
  * swap_b8_in_ZVALUE - swap 8 and if needed, 16 bits in a ZVALUE
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a ZVALUE to swap
  *	all	- TRUE => swap every element, FALSE => swap only the
- *		  multiprecision storage
+ *		  multi-precision storage
  *
  * returns:
  *	pointer to where the swapped src has been put
@@ -127,8 +126,8 @@ swap_b8_in_ZVALUE(ZVALUE *dest, ZVALUE *src, BOOL all)
 	 * swap or copy the rest of the ZVALUE elements
 	 */
 	if (all) {
-		dest->len = (LEN)SWAP_B8_IN_LEN(&dest->len, &src->len);
-		dest->sign = (BOOL)SWAP_B8_IN_BOOL(&dest->sign, &src->sign);
+		SWAP_B8_IN_LEN(&dest->len, &src->len);
+		SWAP_B8_IN_BOOL(&dest->sign, &src->sign);
 	} else {
 		dest->len = src->len;
 		dest->sign = src->sign;
@@ -145,11 +144,11 @@ swap_b8_in_ZVALUE(ZVALUE *dest, ZVALUE *src, BOOL all)
  * swap_b8_in_NUMBER - swap 8 and if needed, 16 bits in a NUMBER
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a NUMBER to swap
  *	all	- TRUE => swap every element, FALSE => swap only the
- *		  multiprecision storage
+ *		  multi-precision storage
  *
  * returns:
  *	pointer to where the swapped src has been put
@@ -193,7 +192,7 @@ swap_b8_in_NUMBER(NUMBER *dest, NUMBER *src, BOOL all)
 	 * swap or copy the rest of the NUMBER elements
 	 */
 	if (all) {
-		dest->links = (long)SWAP_B8_IN_LONG(&dest->links, &src->links);
+		SWAP_B8_IN_LONG(&dest->links, &src->links);
 	} else {
 		dest->links = src->links;
 	}
@@ -209,11 +208,11 @@ swap_b8_in_NUMBER(NUMBER *dest, NUMBER *src, BOOL all)
  * swap_b8_in_COMPLEX - swap 8 and if needed, 16 bits in a COMPLEX
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a COMPLEX to swap
  *	all	- TRUE => swap every element, FALSE => swap only the
- *		  multiprecision storage
+ *		  multi-precision storage
  *
  * returns:
  *	pointer to where the swapped src has been put
@@ -257,7 +256,7 @@ swap_b8_in_COMPLEX(COMPLEX *dest, COMPLEX *src, BOOL all)
 	 * swap or copy the rest of the NUMBER elements
 	 */
 	if (all) {
-		dest->links = (long)SWAP_B8_IN_LONG(&dest->links, &src->links);
+		SWAP_B8_IN_LONG(&dest->links, &src->links);
 	} else {
 		dest->links = src->links;
 	}
@@ -273,7 +272,7 @@ swap_b8_in_COMPLEX(COMPLEX *dest, COMPLEX *src, BOOL all)
  * swap_b16_in_HALFs - swap 16 bits in an array of HALFs
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a HALF array to swap
  *	len	- length of the src HALF array
@@ -313,11 +312,11 @@ swap_b16_in_HALFs(HALF *dest, HALF *src, LEN len)
  * swap_b16_in_ZVALUE - swap 16 bits in a ZVALUE
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a ZVALUE to swap
  *	all	- TRUE => swap every element, FALSE => swap only the
- *		  multiprecision storage
+ *		  multi-precision storage
  *
  * returns:
  *	pointer to where the swapped src has been put
@@ -362,8 +361,8 @@ swap_b16_in_ZVALUE(ZVALUE *dest, ZVALUE *src, BOOL all)
 	 * swap or copy the rest of the ZVALUE elements
 	 */
 	if (all) {
-		dest->len = (LEN)SWAP_B16_IN_LEN(&dest->len, &src->len);
-		dest->sign = (BOOL)SWAP_B16_IN_BOOL(&dest->sign, &src->sign);
+		SWAP_B16_IN_LEN(&dest->len, &src->len);
+		SWAP_B16_IN_BOOL(&dest->sign, &src->sign);
 	} else {
 		dest->len = src->len;
 		dest->sign = src->sign;
@@ -380,11 +379,11 @@ swap_b16_in_ZVALUE(ZVALUE *dest, ZVALUE *src, BOOL all)
  * swap_b16_in_NUMBER - swap 16 bits in a NUMBER
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a NUMBER to swap
  *	all	- TRUE => swap every element, FALSE => swap only the
- *		  multiprecision storage
+ *		  multi-precision storage
  *
  * returns:
  *	pointer to where the swapped src has been put
@@ -428,7 +427,7 @@ swap_b16_in_NUMBER(NUMBER *dest, NUMBER *src, BOOL all)
 	 * swap or copy the rest of the NUMBER elements
 	 */
 	if (all) {
-		dest->links = (long)SWAP_B16_IN_LONG(&dest->links, &src->links);
+		SWAP_B16_IN_LONG(&dest->links, &src->links);
 	} else {
 		dest->links = src->links;
 	}
@@ -444,11 +443,11 @@ swap_b16_in_NUMBER(NUMBER *dest, NUMBER *src, BOOL all)
  * swap_b16_in_COMPLEX - swap 16 bits in a COMPLEX
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a COMPLEX to swap
  *	all	- TRUE => swap every element, FALSE => swap only the
- *		  multiprecision storage
+ *		  multi-precision storage
  *
  * returns:
  *	pointer to where the swapped src has been put
@@ -492,7 +491,7 @@ swap_b16_in_COMPLEX(COMPLEX *dest, COMPLEX *src, BOOL all)
 	 * swap or copy the rest of the NUMBER elements
 	 */
 	if (all) {
-		dest->links = (long)SWAP_B16_IN_LONG(&dest->links, &src->links);
+		SWAP_B16_IN_LONG(&dest->links, &src->links);
 	} else {
 		dest->links = src->links;
 	}
@@ -508,11 +507,11 @@ swap_b16_in_COMPLEX(COMPLEX *dest, COMPLEX *src, BOOL all)
  * swap_HALF_in_ZVALUE - swap HALFs in a ZVALUE
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a ZVALUE to swap
  *	all	- TRUE => swap every element, FALSE => swap only the
- *		  multiprecision storage
+ *		  multi-precision storage
  *
  * returns:
  *	pointer to where the swapped src has been put
@@ -558,8 +557,8 @@ swap_HALF_in_ZVALUE(ZVALUE *dest, ZVALUE *src, BOOL all)
 	 * swap or copy the rest of the ZVALUE elements
 	 */
 	if (all) {
-		dest->len = (LEN)SWAP_HALF_IN_LEN(&dest->len, &src->len);
-		dest->sign = (BOOL)SWAP_HALF_IN_BOOL(&dest->sign, &src->sign);
+		SWAP_HALF_IN_LEN(&dest->len, &src->len);
+		SWAP_HALF_IN_BOOL(&dest->sign, &src->sign);
 	} else {
 		dest->len = src->len;
 		dest->sign = src->sign;
@@ -576,11 +575,11 @@ swap_HALF_in_ZVALUE(ZVALUE *dest, ZVALUE *src, BOOL all)
  * swap_HALF_in_NUMBER - swap HALFs in a NUMBER
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a NUMBER to swap
  *	all	- TRUE => swap every element, FALSE => swap only the
- *		  multiprecision storage
+ *		  multi-precision storage
  *
  * returns:
  *	pointer to where the swapped src has been put
@@ -624,7 +623,7 @@ swap_HALF_in_NUMBER(NUMBER *dest, NUMBER *src, BOOL all)
 	 * swap or copy the rest of the NUMBER elements
 	 */
 	if (all) {
-		dest->links = (long)SWAP_HALF_IN_LONG(&dest->links,&src->links);
+		SWAP_HALF_IN_LONG(&dest->links, &src->links);
 	} else {
 		dest->links = src->links;
 	}
@@ -640,11 +639,11 @@ swap_HALF_in_NUMBER(NUMBER *dest, NUMBER *src, BOOL all)
  * swap_HALF_in_COMPLEX - swap HALFs in a COMPLEX
  *
  * given:
- *	dest	- pointer to where the swapped src wil be put or
+ *	dest	- pointer to where the swapped src will be put or
  *		  NULL to allocate the storage
  *	src	- pointer to a COMPLEX to swap
  *	all	- TRUE => swap every element, FALSE => swap only the
- *		  multiprecision storage
+ *		  multi-precision storage
  *
  * returns:
  *	pointer to where the swapped src has been put
@@ -688,7 +687,7 @@ swap_HALF_in_COMPLEX(COMPLEX *dest, COMPLEX *src, BOOL all)
 	 * swap or copy the rest of the NUMBER elements
 	 */
 	if (all) {
-		dest->links = (long)SWAP_HALF_IN_LONG(&dest->links,&src->links);
+		SWAP_HALF_IN_LONG(&dest->links, &src->links);
 	} else {
 		dest->links = src->links;
 	}

byteswap.h

@@ -1,7 +1,7 @@
 /*
  * byteswap - byte swapping macros
  *
- * Copyright (C) 1999,2014  Landon Curt Noll
+ * Copyright (C) 1999,2014,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.3 $
- * @(#) $Id: byteswap.h,v 30.3 2014/08/24 21:56:51 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/RCS/byteswap.h,v $
- *
  * Under source code control:	1995/10/11 04:44:01
  * File existed as early as:	1995
  *
@@ -43,7 +39,7 @@
 /*
  * SWAP_B8_IN_B16 - swap 8 bits in 16 bits
  *
- *	dest	- pointer to where the swapped src wil be put
+ *	dest	- pointer to where the swapped src will be put
  *	src	- pointer to a 16 bit value to swap
  *
  * This macro will either switch to the opposite byte sex (Big Endian vs.
@@ -57,7 +53,7 @@
 /*
  * SWAP_B16_IN_B32 - swap 16 bits in 32 bits
  *
- *	dest	- pointer to where the swapped src wil be put
+ *	dest	- pointer to where the swapped src will be put
  *	src	- pointer to a 32 bit value to swap
  */
 #define SWAP_B16_IN_B32(dest, src) (					\
@@ -68,7 +64,7 @@
 /*
  * SWAP_B8_IN_B32 - swap 8 & 16 bits in 32 bits
  *
- *	dest	- pointer to where the swapped src wil be put
+ *	dest	- pointer to where the swapped src will be put
  *	src	- pointer to a 32 bit value to swap
  *
  * This macro will either switch to the opposite byte sex (Big Endian vs.
@@ -86,7 +82,7 @@
 /*
  * SWAP_B32_IN_B64 - swap 32 bits in 64 bits
  *
- *	dest	- pointer to where the swapped src wil be put
+ *	dest	- pointer to where the swapped src will be put
  *	src	- pointer to a 64 bit value to swap
  */
 #define SWAP_B32_IN_B64(dest, src) (					\
@@ -97,7 +93,7 @@
 /*
  * SWAP_B16_IN_B64 - swap 16 & 32 bits in 64 bits
  *
- *	dest	- pointer to where the swapped src wil be put
+ *	dest	- pointer to where the swapped src will be put
  *	src	- pointer to a 64 bit value to swap
  */
 #define SWAP_B16_IN_B64(dest, src) (					\
@@ -110,7 +106,7 @@
 /*
  * SWAP_B8_IN_B64 - swap 16 & 32 bits in 64 bits
  *
- *	dest	- pointer to where the swapped src wil be put
+ *	dest	- pointer to where the swapped src will be put
  *	src	- pointer to a 64 bit value to swap
  *
  * This macro will either switch to the opposite byte sex (Big Endian vs.
@@ -128,7 +124,7 @@
 /*
  * SWAP_B32_IN_B64 - swap 32 bits in 64 bits (simulated by 2 32 bit values)
  *
- *	dest	- pointer to where the swapped src wil be put
+ *	dest	- pointer to where the swapped src will be put
  *	src	- pointer to a 64 bit value to swap
  */
 #define SWAP_B32_IN_B64(dest, src) (					\
@@ -139,7 +135,7 @@
 /*
  * SWAP_B16_IN_B64 - swap 16 & 32 bits in 64 bits (simulated by 2 32 bit vals)
  *
- *	dest	- pointer to where the swapped src wil be put
+ *	dest	- pointer to where the swapped src will be put
  *	src	- pointer to a 64 bit value to swap
  */
 #define SWAP_B16_IN_B64(dest, src) (					\
@@ -150,7 +146,7 @@
 /*
  * SWAP_B8_IN_B64 - swap 16 & 32 bits in 64 bits (simulated by 2 32 bit vals)
  *
- *	dest	- pointer to where the swapped src wil be put
+ *	dest	- pointer to where the swapped src will be put
  *	src	- pointer to a 64 bit value to swap
  *
  * This macro will either switch to the opposite byte sex (Big Endian vs.

cal/Makefile

@@ -2,7 +2,15 @@
 #
 # cal - makefile for calc standard resource files
 #
-# Copyright (C) 1999-2006  Landon Curt Noll
+# Copyright (C) 1999-2006,2017,2021  Landon Curt Noll
+#
+# SRC: cal/Makefile
+#
+#	The "# SRC: ... - ..." comment line above indicates
+#	the origin of this file.
+#
+# IMPORTANT: Please see the section on Makefiles near the
+#	     bottom of the HOWTO.INSTALL file.
 #
 # Calc is open software; you can redistribute it and/or modify it under
 # the terms of the version 2.1 of the GNU Lesser General Public License
@@ -18,10 +26,6 @@
 # received a copy with calc; if not, write to Free Software Foundation, Inc.
 # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #
-# @(#) $Revision: 30.11 $
-# @(#) $Id: Makefile,v 30.11 2014/09/02 07:14:49 chongo Exp $
-# @(#) $Source: /usr/local/src/bin/calc/cal/RCS/Makefile,v $
-#
 # Under source code control:	1991/07/21 05:00:54
 # File existed as early as:	1991
 #
@@ -31,15 +35,68 @@
 # calculator by David I. Bell with help/mods from others
 # Makefile by Landon Curt Noll
 
-# required vars
+
+# The shell used by this Makefile
 #
-SHELL= /bin/sh
+# On some systems, /bin/sh is a rather reduced shell with
+# deprecated behavior.
+#
+# If your system has a up to date, bash shell, then
+# you may wish to use:
+#
+#	SHELL= /bin/bash
+#
+# On some systems such as macOS, the bash shell is very
+# far behind to the point where is cannot be depended on.
+# On such systems, the sh may be a much better alternative
+# shell for this Makefile to use:
+#
+#	SHELL= /bin/sh
+#
+SHELL= /bin/bash
+#SHELL= /bin/sh
+#if 0	/* start of skip for non-Gnu makefiles */
+ifeq ($(target),Darwin)
+SHELL:= /bin/zsh
+endif
+#endif	/* end of skip for non-Gnu makefiles */
+
 
 ####
 # Normally, the upper level makefile will set these values.  We provide
 # a default here just in case you want to build from this directory.
 ####
 
+# PREFIX - Top level location for calc
+#
+# The PREFIX is often prepended to paths within calc and calc Makefiles.
+#
+# Starting with calc v2.13.0.1, nearly all Makefile places that used
+# /usr/local now use ${PREFIX}.  An exception is the olduninstall rule
+# and, of course, this section. :-)
+#
+# NOTE: The ${PREFIX} is not the same as ${T}.  The ${T} specifies
+#	a top level directory under which calc installs things.
+#	While usually ${T} is empty, it can be specific path
+#	as if calc where "chrooted" during an install.
+#	The ${PREFIX} value, during install, is a path between
+#	the top level ${T} install directory and the object
+#	such as an include file.
+#
+# NOTE: See also, ${T}, below.
+#
+# There are some paths that do NOT call under ${PREFIX}, such as
+# ${CALCPATH}, that include paths not under ${PREFIX}, but those
+# too are exceptions to this general rule.
+#
+# When in doubt, try:
+#
+#	PREFIX= /usr/local
+#
+PREFIX= /usr/local
+#PREFIX= /usr
+#PREFIX= /usr/global
+
 # Normally certain files depend on the Makefile.  If the Makefile is
 # changed, then certain steps should be redone.  If MAKE_FILE is
 # set to Makefile, then these files will depend on Makefile.  If
@@ -49,15 +106,6 @@ SHELL= /bin/sh
 #
 MAKE_FILE= Makefile
 
-# Controlling file makefile basename (without the path)
-#
-# This is the basename same of the makefile that may/does/will drive
-# this makefile.
-#
-# If in doubt, set TOP_MAKE_FILE to Makefile
-#
-TOP_MAKE_FILE= Makefile
-
 # Where the system include (.h) files are kept
 #
 # For DJGPP, select:
@@ -69,11 +117,11 @@ TOP_MAKE_FILE= Makefile
 #	INCDIR= /usr/include
 #
 
-#INCDIR= /usr/local/include
+#INCDIR= ${PREFIX}/include
 #INCDIR= /dev/env/DJDIR/include
 INCDIR= /usr/include
 
-# where to install calc realted things
+# where to install calc related things
 #
 # ${BINDIR}		where to install calc binary files
 # ${LIBDIR}		where calc link library (*.a) files are installed
@@ -95,15 +143,15 @@ INCDIR= /usr/include
 #	LIBDIR= /usr/lib
 #	CALC_SHAREDIR= /usr/share/calc
 #
-#BINDIR= /usr/local/bin
+#BINDIR= ${PREFIX}/bin
 #BINDIR= /dev/env/DJDIR/bin
 BINDIR= /usr/bin
 
-#LIBDIR= /usr/local/lib
+#LIBDIR= ${PREFIX}/lib
 #LIBDIR= /dev/env/DJDIR/lib
 LIBDIR= /usr/lib
 
-#CALC_SHAREDIR= /usr/local/lib/calc
+#CALC_SHAREDIR= ${PREFIX}/lib/calc
 #CALC_SHAREDIR= /dev/env/DJDIR/share/calc
 CALC_SHAREDIR= /usr/share/calc
 
@@ -161,47 +209,70 @@ T=
 
 # Makefile debug
 #
-# Q=@	do not echo internal makefile actions (quiet mode)
-# Q=	echo internal makefile actions (debug / verbose mode)
+# Q=@	do not echo internal Makefile actions (quiet mode)
+# Q=	echo internal Makefile actions (debug / verbose mode)
+#
+# H=@:	do not report hsrc file formation progress
+# H=@	do echo hsrc file formation progress
+#
+# S= >/dev/null 2>&1	silence ${CC} output during hsrc file formation
+# S=			full ${CC} output during hsrc file formation
+#
+# E= 2>/dev/null	silence command stderr during hsrc file formation
+# E=			full command stderr during hsrc file formation
+#
+# V=@:	do not echo debug statements (quiet mode)
+# V=@	do echo debug statements (debug / verbose mode)
 #
 #Q=
 Q=@
+#
+S= >/dev/null 2>&1
+#S=
+#
+E= 2>/dev/null
+#E=
+#
+#H=@:
+H=@
+#
+V=@:
+#V=@
 
 # standard tools
 #
 CHMOD= chmod
 CMP= cmp
-RM= rm
-MKDIR= mkdir
-RMDIR= rmdir
-CP= cp
-MV= mv
 CO= co
-TRUE= true
-TOUCH= touch
+CP= cp
+FMT= fmt
+MKDIR= mkdir
+MV= mv
+RM= rm
+RMDIR= rmdir
 SED= sed
 SORT= sort
-FMT= fmt
+TOUCH= touch
+TRUE= true
 
 # The calc files to install
 #
-# This list is prodiced by the detaillist rule when no WARNINGS are detected.
+# This list is produced by the detaillist rule when no WARNINGS are detected.
 #
 # Please use:
 #
 #	make calc_files_list
 #
-# to keep this list in nice sorted order and to check that these
-# deailed help files are under RCS control.
+# to keep this list in nice sorted order.
 #
 CALC_FILES= README alg_config.cal beer.cal bernoulli.cal \
 	bernpoly.cal bigprime.cal bindings brentsolve.cal chi.cal chrem.cal \
 	constants.cal deg.cal dms.cal dotest.cal ellip.cal factorial.cal \
-	factorial2.cal gvec.cal hello.cal hms.cal infinities.cal \
-	intfile.cal intnum.cal lambertw.cal linear.cal lnseries.cal \
-	lucas.cal lucas_chk.cal lucas_tbl.cal mersenne.cal mfactor.cal \
-	mod.cal natnumset.cal pell.cal pi.cal pix.cal pollard.cal poly.cal \
-	prompt.cal psqrt.cal qtime.cal quat.cal randbitrun.cal randmprime.cal \
+	factorial2.cal gvec.cal hello.cal hms.cal infinities.cal intfile.cal \
+	intnum.cal lambertw.cal linear.cal lnseries.cal lucas.cal \
+	lucas_chk.cal mersenne.cal mfactor.cal mod.cal natnumset.cal \
+	palindrome.cal pell.cal pi.cal pix.cal pollard.cal poly.cal prompt.cal \
+	psqrt.cal qtime.cal quat.cal randbitrun.cal randmprime.cal \
 	randombitrun.cal randomrun.cal randrun.cal regress.cal repeat.cal \
 	screen.cal seedrandom.cal set8700.cal set8700.line smallfactors.cal \
 	solve.cal specialfunctions.cal statistics.cal strings.cal sumsq.cal \
@@ -211,6 +282,10 @@ CALC_FILES= README alg_config.cal beer.cal bernoulli.cal \
 	test8400.cal test8500.cal test8600.cal test8900.cal toomcook.cal \
 	unitfrac.cal varargs.cal xx_print.cal zeta2.cal
 
+# These calc files are now obsolete and are removed by the install rule.
+#
+DEAD_CALC_FILES= lucas_tbl.cal
+
 # These files are found (but not built) in the distribution
 #
 DISTLIST= ${CALC_FILES} ${MAKE_FILE}
@@ -236,7 +311,7 @@ all: ${CALC_FILES} ${MAKE_FILE} .all
 # sub-directory called calc/cal.
 #
 # NOTE: Due to bogus shells found on one common system we must have
-#	an non-emoty else clause for every if condition.  *sigh*
+#	an non-empty else clause for every if condition.  *sigh*
 #
 ##
 
@@ -261,19 +336,13 @@ calcliblist:
 #
 calc_files_list:
 	${Q} -(find .  -mindepth 1 -maxdepth 1 -type f -name '*.cal' -print | \
-	   while read i; do \
-		if [ X"$$i" != X"/dev/null" ]; then \
-		    if [ ! -f RCS/$$i,v ]; then \
-			echo "WARNING: $$i not under RCS control" 1>&2; \
-		    else \
-			echo $$i; \
-		    fi; \
-		fi; \
-	done; \
-	echo '--first_line--'; \
-	echo README; \
-	echo set8700.line; \
-	echo bindings) | \
+	    while read i; do \
+		echo $$i; \
+	    done; \
+	    echo '--first_line--'; \
+	    echo README; \
+	    echo set8700.line; \
+	    echo bindings) | \
 	    ${SED} -e 's:^\./::' | LANG=C ${SORT} | ${FMT} -70 | \
 	    ${SED} -e '1s/--first_line--/CALC_FILES=/' -e '2,$$s/^/	/' \
 		   -e 's/$$/ \\/' -e '$$s/ \\$$//'
@@ -301,6 +370,23 @@ clean:
 
 clobber: clean
 	${RM} -f .all
+	-${Q} if [ -e .DS_Store ]; then \
+	    echo ${RM} -rf .DS_Store; \
+	    ${RM} -rf .DS_Store; \
+	fi
+	-${Q} for i in ${DEAD_CALC_FILES} /dev/null; do \
+	    if [ "$$i" = "/dev/null" ]; then \
+		continue; \
+	    fi; \
+	    if [ -e "${T}${CALC_SHAREDIR}/$$i" ]; then \
+		echo "${RM} -f ${T}${CALC_SHAREDIR}/$$i"; \
+		${RM} -f ${T}${CALC_SHAREDIR}/$$i; \
+	    fi; \
+	    if [ -e "./$$i" ]; then \
+		echo "${RM} -f ./$$i"; \
+		${RM} -f ./$$i; \
+	    fi; \
+	done
 
 # install everything
 #
@@ -333,22 +419,48 @@ install: all
 		echo "installed ${T}${CALC_SHAREDIR}/$$i"; \
 	    fi; \
 	done
+	${Q} for i in ${DEAD_CALC_FILES} /dev/null; do \
+	    if [ "$$i" = "/dev/null" ]; then \
+		continue; \
+	    fi; \
+	    if [ -e "${T}${CALC_SHAREDIR}/$$i" ]; then \
+		echo "${RM} -f ${T}${CALC_SHAREDIR}/$$i"; \
+		${RM} -f ${T}${CALC_SHAREDIR}/$$i; \
+	    fi; \
+	    if [ -e "./$$i" ]; then \
+		echo "${RM} -f ./$$i"; \
+		${RM} -f ./$$i; \
+	    fi; \
+	done
 
 # Try to remove everything that was installed
 #
 # NOTE: Keep the uninstall rule in reverse order to the install rule
 #
 uninstall:
+	- ${Q} for i in ${DEAD_CALC_FILES} /dev/null; do \
+	    if [ "$$i" = "/dev/null" ]; then \
+		continue; \
+	    fi; \
+	    if [ -e "${T}${CALC_SHAREDIR}/$$i" ]; then \
+		echo "${RM} -f ${T}${CALC_SHAREDIR}/$$i"; \
+		${RM} -f ${T}${CALC_SHAREDIR}/$$i; \
+	    fi; \
+	    if [ -e "./$$i" ]; then \
+		echo "${RM} -f ./$$i"; \
+		${RM} -f ./$$i; \
+	    fi; \
+	done
 	-${Q} for i in ${CALC_FILES} /dev/null; do \
 	    if [ "$$i" = "/dev/null" ]; then \
 		continue; \
 	    fi; \
 	    if [ -f "${T}${CALC_SHAREDIR}/$$i" ]; then \
-	    	${RM} -f "${T}${CALC_SHAREDIR}/$$i"; \
+		${RM} -f "${T}${CALC_SHAREDIR}/$$i"; \
 		if [ -f "${T}${CALC_SHAREDIR}/$$i" ]; then \
 		   echo "cannot uninstall ${T}${CALC_SHAREDIR}/$$i"; \
 		else \
-		   echo "uninstalled ${T}${CALC_SHAREDIR}/$$i"; \
+		   echo "un-installed ${T}${CALC_SHAREDIR}/$$i"; \
 		fi; \
 	    fi; \
 	done

cal/README

@@ -14,9 +14,12 @@ For example:
 
     ; read lucas
     lucas(h,n) defined
+    gen_u2(h,n,v1) defined
     gen_u0(h,n,v1) defined
+    rodseth_xhn(x,h,n) defined
     gen_v1(h,n) defined
     ldebug(funct,str) defined
+    legacy_gen_v1(h,n) defined
 
 will cause calc to load and execute the 'lucas.cal' resource file.
 Executing the resource file will cause several functions to be defined.
@@ -35,43 +38,6 @@ Calc resource file files are provided because they serve as examples of
 how use the calc language, and/or because the authors thought them to
 be useful!
 
-If you write something that you think is useful, please join the
-low volume calc mailing list calc-tester.  Then send your contribution
-to the calc-tester mailing list.
-
-To subscribe to the calc-tester mailing list, visit the following URL:
-
-	https://www.listbox.com/subscribe/?list_id=239342
-
-    To help determine you are a human and not just a spam bot,
-    you will be required to provide the following additional info:
-
-	Your Name
-	Calc Version
-	Operating System
-	The date 7 days ago
-
-    This is a low volume moderated mailing list.
-
-    This mailing list replaces calc-tester at asthe dot com list.
-
-    If you need a human to help you with your mailing list subscription,
-    please send EMail to our special:
-
-	calc-tester-maillist-help at asthe dot com
-
-	NOTE: Remove spaces and replace 'at' with @, 'dot' with .
-
-    address.  To be sure we see your EMail asking for help with your
-    mailing list subscription, please use the following phase in your
-    EMail Subject line:
-
-	calc tester mailing list help
-
-    That phrase in your subject line will help ensure your
-    request will get past our anti-spam filters.  You may have
-    additional words in your subject line.
-
 =-=
 
 By convention, a resource file only defines and/or initializes functions,
@@ -220,7 +186,7 @@ bernoulli.cal
     Calculate the nth Bernoulli number.
 
     NOTE: There is now a bernoulli() builtin function.  This file is
-    	  left here for backward compatibility and now simply returns
+	  left here for backward compatibility and now simply returns
 	  the builtin function.
 
 
@@ -247,12 +213,12 @@ brentsolve.cal
 
     brentsolve(low, high,eps)
 
-    A root-finder implementwed with the Brent-Dekker trick.
+    A root-finder implemented with the Brent-Dekker trick.
 
     brentsolve2(low, high,which,eps)
 
     The second function, brentsolve2(low, high,which,eps) has some lines
-    added to make it easier to hardcode the name of the helper function
+    added to make it easier to hard-code the name of the helper function
     different from the obligatory "f".
 
     See:
@@ -426,7 +392,7 @@ factorial2.cal
 
     bigcatalan(n)
 
-    Calculates the n-th Catalan number for n large. It is usefull
+    Calculates the n-th Catalan number for n large. It is useful
     above n~50,000 but defaults to the builtin function for smaller
     values.Meant as a complete replacement for catalan(n) with only a
     very small overhead.  See:
@@ -467,9 +433,9 @@ factorial2.cal
                       k = 0
 
     The other function stirling2caching(n,m) does it by way of the
-    reccurence relation and keeps all earlier results. This function
+    re-occurrence relation and keeps all earlier results. This function
     is much slower for computing a single value than stirling2(n,m) but
-    is very usefull if many Stirling numbers are needed, for example in
+    is very useful if many Stirling numbers are needed, for example in
     a series.  See:
 
         http://en.wikipedia.org/wiki/Stirling_numbers_of_the_second_kind
@@ -580,7 +546,7 @@ infinities.cal
     pinf()
 
     The symbolic handling of infinities. Needed for intnum.cal but might be
-    usefull elsewhere, too.
+    useful elsewhere, too.
 
 
 intfile.cal
@@ -629,13 +595,13 @@ intnum.cal
     This file offers some methods for numerical integration. Implemented are
     the Gauss-Legendre and the tanh-sinh quadrature.
 
-    All functions are usefull to some extend but the main function for
+    All functions are useful to some extend but the main function for
     quadrature is quad(), which is not much more than an abstraction layer.
 
-    The main workers are quadgl() for Gauss-legendre and quadts() for the
+    The main workers are quadgl() for Gauss-Legendre and quadts() for the
     tanh-sinh quadrature. The limits of the integral can be anything in the
     complex plane and the extended real line. The latter means that infinite
-    limits are supported by way of the smbolic infinities implemented in the
+    limits are supported by way of the symbolic infinities implemented in the
     file infinities.cal (automatically linked in by intnum.cal).
 
     Integration in parts and contour is supported by the "points" argument
@@ -695,7 +661,7 @@ intnum.cal
 
     The quad*core functions do not offer anything fancy but the third parameter
     controls the so called "order" which is just the number of nodes computed.
-    This can be quite usefull in some circumstances.
+    This can be quite useful in some circumstances.
 
         ; quadgldeletenodes()
         ; define f(x){ return exp(x);}
@@ -757,7 +723,7 @@ lambertw.cal
      ProductLog[branch,z] with the tested values.
 
      The series is only valid for the branches 0,-1, real z, converges
-     for values of z _very_ near the branchpoint -exp(-1) only, and must
+     for values of z _very_ near the branch-point -exp(-1) only, and must
      be given the branches explicitly.  See the code in lambertw.cal
      for further information.
 
@@ -780,7 +746,7 @@ lnseries.cal
     does so by computing the prime factorization of all of the number
     sequence 1,2,3...n, calculates the natural logarithms of the primes
     in 1,2,3...n and uses the above factorization to build the natural
-    logarithms of the rest of the sequence by sadding the logarithms of
+    logarithms of the rest of the sequence by adding the logarithms of
     the primes in the factorization.  This is faster for high precision
     of the logarithms and/or long sequences.
 
@@ -792,7 +758,27 @@ lucas.cal
 
     lucas(h, n)
 
-    Perform a primality test of h*2^n-1, with 1<=h<2*n.
+    Perform a primality test of h*2^n-1.
+
+    gen_u2(h, n, v1)
+
+    Generate u(2) for h*2^n-1.  This function is used by lucas(h, n),
+    as the first term in the lucas sequence that is needed to
+    prove that h*2^n-1 is prime or not prime.
+
+    NOTE: Some call this term u(0).  The function gen_u0(h, n, v1)
+	  simply calls gen_u2(h, n, v1) for such people.  :-)
+
+    gen_v1(h, v)
+
+    Generate v(1) for h*2^n-1.  This function is used by lucas(h, n),
+    via the gen_u2(h, n, v1), to supply the 3rd argument to gen_u2.
+
+    legacy_gen_v1(h, n)
+
+    Generate v(1) for h*2^n-1 using the legacy Amdahl 6 method.
+    This function sometimes returns -1 for a few cases when
+    h is a multiple of 3.  This function is NOT used by lucas(h, n).
 
 
 lucas_chk.cal
@@ -805,11 +791,6 @@ lucas_chk.cal
     Used by regress.cal during the 2100 test set.
 
 
-lucas_tbl.cal
-
-    Lucasian criteria for primality tables.
-
-
 mersenne.cal
 
     mersenne(p)
@@ -825,7 +806,7 @@ mfactor.cal
     at 2*start_k*n+1.  Skips values that are multiples of primes <= p_elim.
     By default, start_k == 1, rept_loop = 10000 and p_elim = 17.
 
-    The p_elim == 17 overhead takes ~3 minutes on an 200 Mhz r4k CPU and
+    The p_elim == 17 overhead takes ~3 minutes on an 200 MHz r4k CPU and
     requires about ~13 Megs of memory.	The p_elim == 13 overhead
     takes about 3 seconds and requires ~1.5 Megs of memory.
 
@@ -898,6 +879,38 @@ natnumset.cal
     user-specified bound.
 
 
+palindrome.cal
+
+    digitof(val,place)
+    copalplace(d,place)
+    upperhalf(val)
+    mkpal(val)
+    mkpalmiddigit(val,digit)
+    ispal(val)
+    nextpal(val)
+    prevpal(val)
+    nextprimepal(val)
+    prevprimepal(val)
+
+    Functions to form and manipulate palindromes in base 10.
+
+    Important functions are:
+
+	Find the next / previous palindrome:
+
+	    nextpal(val)
+	    prevpal(val)
+
+	Test if a value is a palindrome:
+
+	    ispal(val)
+
+	Find the next / previous palindrome that is a (highly probable) prime:
+
+	    nextprimepal(val)
+	    prevprimepal(val)
+
+
 pell.cal
 
     pellx(D)
@@ -919,7 +932,7 @@ pi.cal
     as your free memory space and system up time allows.
 
     The piforever() function (written by Klaus Alexander Seistrup
-    <klaus@seistrup.dk>) was inspired by an algorithm conceived by
+    <klaus at seistrup dot dk>) was inspired by an algorithm conceived by
     Lambert Meertens.  See also the ABC Programmer's Handbook, by Geurts,
     Meertens & Pemberton, published by Prentice-Hall (UK) Ltd., 1990.
 
@@ -1336,7 +1349,7 @@ specialfunctions.cal
 	http://en.wikipedia.org/wiki/Polygamma
         http://dlmf.nist.gov/5
 
-    for information on the n-th derivative ofthe Euler gamma function. This
+    for information on the n-th derivative of the Euler gamma function. This
     function depends on the script zeta2.cal.
 
 
@@ -1353,7 +1366,7 @@ specialfunctions.cal
 
     zeta(s)
 
-    Calculates the value of the Rieman Zeta function at s.  See:
+    Calculates the value of the Riemann Zeta function at s.  See:
 
 	http://en.wikipedia.org/wiki/Riemann_zeta_function
         http://dlmf.nist.gov/25.2
@@ -1372,7 +1385,7 @@ statistics.cal
     invbetainc(x,a,b)
 
     Computes the inverse of the regularized beta function. Does so the
-    brute-force way wich makes it a bit slower.
+    brute-force way which makes it a bit slower.
 
     betapdf(x,a,b)
     betacdf(x,a,b)
@@ -1452,9 +1465,9 @@ sumtimes.cal
     Give the user CPU time for various ways of evaluating sums, sums of
     squares, etc, for large lists and matrices.  N is the size of
     the list or matrix to use.  The doalltimes() function will run
-    all fo the sumtimes tests.  For example:
+    all of the sumtimes tests.  For example:
 
-    	doalltimes(1e6);
+	doalltimes(1e6);
 
 
 surd.cal
@@ -1798,7 +1811,7 @@ zeta2.cal
     for information on this special zeta function.
 
 
-## Copyright (C) 2000,2014  David I. Bell and Landon Curt Noll
+## Copyright (C) 2000,2014,2017,2021  David I. Bell and Landon Curt Noll
 ##
 ## Primary author: Landon Curt Noll
 ##
@@ -1816,10 +1829,6 @@ zeta2.cal
 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
 ## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ##
-## @(#) $Revision: 30.9 $
-## @(#) $Id: README,v 30.9 2014/10/06 08:44:18 chongo Exp $
-## @(#) $Source: /usr/local/src/bin/calc/cal/RCS/README,v $
-##
 ## Under source code control:	1990/02/15 01:50:32
 ## File existed as early as:	before 1990
 ##

cal/alg_config.cal

@@ -1,7 +1,7 @@
 /*
  * alg_config - help determine optimal values for algorithm levels
  *
- * Copyright (C) 2006,2014  Landon Curt Noll
+ * Copyright (C) 2006,2014,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.12 $
- * @(#) $Id: alg_config.cal,v 30.12 2016/02/06 08:38:56 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/alg_config.cal,v $
- *
  * Under source code control:	2006/06/07 14:10:11
  * File existed as early as:	2006
  *
@@ -37,7 +33,7 @@ static test_time;	/* try for this many seconds in loop test */
  * given:
  *	ratio	the ratio of time between two algorithms
  *
- * retuns:
+ * returns:
  *	1	When ratio is near 1.0
  *	0	otherwise
  *
@@ -358,7 +354,7 @@ define best_mul2()
     local high;		/* high loop value tested */
     local mid;		/* between low and high */
     local best_val;	/* value found with ratio closest to unity */
-    local best_ratio;	/* cloest ratio found to unity */
+    local best_ratio;	/* closest ratio found to unity */
     local expand;	/* how fast to expand the length */
 
     /*
@@ -367,7 +363,7 @@ define best_mul2()
     printf("WARNING: This tool may not be computing the correct best value\n");
     test_time = 5.0;
     printf("The best_mul2() function will take a LONG time to run!\n");
-    printf("It is important that best_mul2() run on an othwewise idle host!\n");
+    printf("It is important that best_mul2() run on an otherwise idle host!\n");
     if (config("user_debug") <= 0) {
 	printf("To monitor progress, set user_debug to 2: "
 	       "config(\"user_debug\", 2)\n");
@@ -396,7 +392,7 @@ define best_mul2()
      */
     do {
 	/*
-	 * determine the paramters of the next ratio test
+	 * determine the parameters of the next ratio test
 	 *
 	 * We will multiplicatively expand our test level until
 	 * the ratio drops below 1.0.
@@ -423,7 +419,7 @@ define best_mul2()
 	    best_val = high;
 	    best_ratio = ratio;
 	    if (config("user_debug") > 1) {
-		printf("    len %d has a new cloest ratio to unity: %.6f\n",
+		printf("    len %d has a new closest ratio to unity: %.6f\n",
 		       best_val, best_ratio);
 	    }
 	}
@@ -446,7 +442,7 @@ define best_mul2()
 	    high /= 2;
 	    low = high / 2;
 	    if (config("user_debug") > 0) {
-		printf("retesting multiply alg1/alg2 ratio for len = %d\n",
+		printf("re-testing multiply alg1/alg2 ratio for len = %d\n",
 		       high);
 	    }
 	    ratio = mul_ratio(high);
@@ -454,7 +450,8 @@ define best_mul2()
 		best_val = high;
 		best_ratio = ratio;
 		if (config("user_debug") > 1) {
-		    printf("    len %d has a new cloest ratio to unity: %.6f\n",
+		    printf("    len %d has a new closest ratio "
+			   "to unity: %.6f\n",
 			   best_val, best_ratio);
 		}
 	    }
@@ -477,7 +474,7 @@ define best_mul2()
      */
     while (low+1 < high) {
 
-    	/* try the mid-point */
+	/* try the mid-point */
 	mid = int((low+high)/2);
 	if (config("user_debug") > 0) {
 	    printf("testing multiply alg1/alg2 ratio for len = %d\n", mid);
@@ -487,7 +484,7 @@ define best_mul2()
 	    best_val = mid;
 	    best_ratio = ratio;
 	    if (config("user_debug") > 1) {
-		printf("    len %d has a new cloest ratio to unity: %.6f\n",
+		printf("    len %d has a new closest ratio to unity: %.6f\n",
 		       best_val, best_ratio);
 	    }
 	}
@@ -500,7 +497,7 @@ define best_mul2()
 	    low = mid;
 	    high = mid;
 	    if (config("user_debug") > 0) {
-	    	printf("\twe are close enough to unity ratio at: %d\n", mid);
+		printf("\twe are close enough to unity ratio at: %d\n", mid);
 	    }
 	    break;
 	}
@@ -508,7 +505,7 @@ define best_mul2()
 	/* bump lower range up if we went over */
 	if (ratio > 1.0) {
 	    if (config("user_debug") > 2) {
-	    	printf("\tmove low from %d up to %d\n",
+		printf("\tmove low from %d up to %d\n",
 		    low, mid);
 	    }
 	    low = mid;
@@ -516,7 +513,7 @@ define best_mul2()
 	/* drop higher range down if we went under */
 	} else {
 	    if (config("user_debug") > 2) {
-	    	printf("\tmove high from %d down to %d\n",
+		printf("\tmove high from %d down to %d\n",
 		     high, mid);
 	    }
 	    high = mid;
@@ -525,7 +522,7 @@ define best_mul2()
 	/* report on test loop progress */
 	if (config("user_debug") > 1) {
 	    printf("\tsetting low: %d high: %d diff: %d\n",
-	    	   low, high, high-low);
+		   low, high, high-low);
 	}
     }
 
@@ -539,7 +536,7 @@ define best_mul2()
 	printf("config(\"mul2\", %d),;\n", best_val);
 	printf("WARNING: It is believed that the output "
 	       "of this resource file is bogus!\n");
-	printf("WARNING: You may NOT wish to follow the above suggeston.\n");
+	printf("WARNING: You may NOT wish to follow the above suggestion.\n");
     }
     return mid;
 }
@@ -839,7 +836,7 @@ define best_sq2()
     local high;		/* high loop value tested */
     local mid;		/* between low and high */
     local best_val;	/* value found with ratio closest to unity */
-    local best_ratio;	/* cloest ratio found to unity */
+    local best_ratio;	/* closest ratio found to unity */
     local expand;	/* how fast to expand the length */
 
     /*
@@ -848,7 +845,7 @@ define best_sq2()
     printf("WARNING: This tool may not be computing the correct best value\n");
     test_time = 5.0;
     printf("The best_sq2() function will take a LONG time to run!\n");
-    printf("It is important that best_sq2() run on an othwewise idle host!\n");
+    printf("It is important that best_sq2() run on an otherwise idle host!\n");
     if (config("user_debug") <= 0) {
 	printf("To monitor progress, set user_debug to 2: "
 	       "config(\"user_debug\", 2)\n");
@@ -877,7 +874,7 @@ define best_sq2()
      */
     do {
 	/*
-	 * determine the paramters of the next ratio test
+	 * determine the parameters of the next ratio test
 	 *
 	 * We will multiplicatively expand our test level until
 	 * the ratio drops below 1.0.
@@ -887,7 +884,7 @@ define best_sq2()
 	high *= expand;
 	if (config("user_debug") > 1) {
 	    printf("    expand the next test range by a factor of %d\n",
-	    	   expand);
+		   expand);
 	}
 
 	/*
@@ -904,7 +901,7 @@ define best_sq2()
 	    best_val = high;
 	    best_ratio = ratio;
 	    if (config("user_debug") > 1) {
-		printf("    len %d has a new cloest ratio to unity: %.6f\n",
+		printf("    len %d has a new closest ratio to unity: %.6f\n",
 		       best_val, best_ratio);
 	    }
 	}
@@ -927,7 +924,7 @@ define best_sq2()
 	    high /= 2;
 	    low = high / 2;
 	    if (config("user_debug") > 0) {
-		printf("retesting multiply alg1/alg2 ratio for len = %d\n",
+		printf("re-testing multiply alg1/alg2 ratio for len = %d\n",
 		       high);
 	    }
 	    ratio = mul_ratio(high);
@@ -935,7 +932,8 @@ define best_sq2()
 		best_val = high;
 		best_ratio = ratio;
 		if (config("user_debug") > 1) {
-		    printf("    len %d has a new cloest ratio to unity: %.6f\n",
+		    printf("    len %d has a new closest ratio "
+			   "to unity: %.6f\n",
 			   best_val, best_ratio);
 		}
 	    }
@@ -958,7 +956,7 @@ define best_sq2()
      */
     while (low+1 < high) {
 
-    	/* try the mid-point */
+	/* try the mid-point */
 	mid = int((low+high)/2);
 	if (config("user_debug") > 0) {
 	    printf("testing square alg1/alg2 ratio for len = %d\n", mid);
@@ -968,7 +966,7 @@ define best_sq2()
 	    best_val = mid;
 	    best_ratio = ratio;
 	    if (config("user_debug") > 1) {
-		printf("    len %d has a new cloest ratio to unity: %.6f\n",
+		printf("    len %d has a new closest ratio to unity: %.6f\n",
 		       best_val, best_ratio);
 	    }
 	}
@@ -981,7 +979,7 @@ define best_sq2()
 	    low = mid;
 	    high = mid;
 	    if (config("user_debug") > 0) {
-	    	printf("\twe are close enough to unity ratio at: %d\n", mid);
+		printf("\twe are close enough to unity ratio at: %d\n", mid);
 	    }
 	    break;
 	}
@@ -989,7 +987,7 @@ define best_sq2()
 	/* bump lower range up if we went over */
 	if (ratio > 1.0) {
 	    if (config("user_debug") > 2) {
-	    	printf("\tmove low from %d up to %d\n",
+		printf("\tmove low from %d up to %d\n",
 		    low, mid);
 	    }
 	    low = mid;
@@ -997,7 +995,7 @@ define best_sq2()
 	/* drop higher range down if we went under */
 	} else {
 	    if (config("user_debug") > 2) {
-	    	printf("\tmove high from %d down to %d\n",
+		printf("\tmove high from %d down to %d\n",
 		     high, mid);
 	    }
 	    high = mid;
@@ -1006,7 +1004,7 @@ define best_sq2()
 	/* report on test loop progress */
 	if (config("user_debug") > 1) {
 	    printf("\tsetting low: %d high: %d diff: %d\n",
-	    	   low, high, high-low);
+		   low, high, high-low);
 	}
     }
 
@@ -1021,7 +1019,7 @@ define best_sq2()
 	printf("config(\"sq2\", %d),;\n", best_val);
 	printf("WARNING: It is believed that the output "
 	       "of this resource file is bogus!\n");
-	printf("WARNING: You may NOT wish to follow the above suggeston.\n");
+	printf("WARNING: You may NOT wish to follow the above suggestion.\n");
     }
     return mid;
 }
@@ -1341,7 +1339,7 @@ define best_pow2()
     local high;		/* high loop value tested */
     local mid;		/* between low and high */
     local best_val;	/* value found with ratio closest to unity */
-    local best_ratio;	/* cloest ratio found to unity */
+    local best_ratio;	/* closest ratio found to unity */
     local expand;	/* how fast to expand the length */
     local looped;	/* 1 ==> we have expanded lengths before */
 
@@ -1351,7 +1349,7 @@ define best_pow2()
     printf("WARNING: This tool may not be computing the correct best value\n");
     test_time = 60.0;
     printf("The best_pow2() function will take a LONG time to run!\n");
-    printf("It is important that best_pow2() run on an othwewise idle host!\n");
+    printf("It is important that best_pow2() run on an otherwise idle host!\n");
     if (config("user_debug") <= 0) {
 	printf("To monitor progress, set user_debug to 2: "
 	       "config(\"user_debug\", 2)\n");
@@ -1362,7 +1360,7 @@ define best_pow2()
      * firewall - must have a >1.02 ratio for the initial length
      *
      * We select 1.02 because of the precision of the CPU timing.  We
-     * want to firt move into an area where the 1st algoritm clearly
+     * want to first move into an area where the 1st algorithm clearly
      * dominates.
      */
     low = 4;
@@ -1379,7 +1377,7 @@ define best_pow2()
 	    best_val = high;
 	    best_ratio = ratio;
 	    if (config("user_debug") > 1) {
-		printf("    len %d has a new cloest ratio to unity: %.6f\n",
+		printf("    len %d has a new closest ratio to unity: %.6f\n",
 		       best_val, best_ratio);
 	    }
 	}
@@ -1387,7 +1385,7 @@ define best_pow2()
 	    printf("    pmod alg1/alg2 ratio = %.3f\n", ratio);
 	    if (ratio > 1.0 && ratio <= 1.02) {
 	    printf("    while alg1 is slightly better than alg2, "
-	    	   "it is not clearly better\n");
+		   "it is not clearly better\n");
 	    }
 	}
     } while (ratio <= 1.02);
@@ -1401,7 +1399,7 @@ define best_pow2()
     looped = 0;
     do {
 	/*
-	 * determine the paramters of the next ratio test
+	 * determine the parameters of the next ratio test
 	 *
 	 * We will multiplicatively expand our test level until
 	 * the ratio drops below 1.0.
@@ -1422,7 +1420,7 @@ define best_pow2()
 	high *= expand;
 	if (config("user_debug") > 1) {
 	    printf("    expand the next test range by a factor of %d\n",
-	    	   expand);
+		   expand);
 	}
 
 	/*
@@ -1439,7 +1437,7 @@ define best_pow2()
 	    best_val = high;
 	    best_ratio = ratio;
 	    if (config("user_debug") > 1) {
-		printf("    len %d has a new cloest ratio to unity: %.6f\n",
+		printf("    len %d has a new closest ratio to unity: %.6f\n",
 		       best_val, best_ratio);
 	    }
 	}
@@ -1457,7 +1455,7 @@ define best_pow2()
      */
     while (low+1 < high) {
 
-    	/* try the mid-point */
+	/* try the mid-point */
 	mid = int((low+high)/2);
 	if (config("user_debug") > 0) {
 	    printf("testing pow2 alg1/alg2 ratio for len = %d\n", mid);
@@ -1467,7 +1465,7 @@ define best_pow2()
 	    best_val = mid;
 	    best_ratio = ratio;
 	    if (config("user_debug") > 1) {
-		printf("    len %d has a new cloest ratio to unity: %.6f\n",
+		printf("    len %d has a new closest ratio to unity: %.6f\n",
 		       best_val, best_ratio);
 	    }
 	}
@@ -1480,7 +1478,7 @@ define best_pow2()
 	    low = mid;
 	    high = mid;
 	    if (config("user_debug") > 0) {
-	    	printf("\twe are close enough to unity ratio at: %d\n", mid);
+		printf("\twe are close enough to unity ratio at: %d\n", mid);
 	    }
 	    break;
 	}
@@ -1488,7 +1486,7 @@ define best_pow2()
 	/* bump lower range up if we went over */
 	if (ratio > 1.0) {
 	    if (config("user_debug") > 2) {
-	    	printf("\tmove low from %d up to %d\n",
+		printf("\tmove low from %d up to %d\n",
 		    low, mid);
 	    }
 	    low = mid;
@@ -1496,7 +1494,7 @@ define best_pow2()
 	/* drop higher range down if we went under */
 	} else {
 	    if (config("user_debug") > 2) {
-	    	printf("\tmove high from %d down to %d\n",
+		printf("\tmove high from %d down to %d\n",
 		     high, mid);
 	    }
 	    high = mid;
@@ -1505,7 +1503,7 @@ define best_pow2()
 	/* report on test loop progress */
 	if (config("user_debug") > 1) {
 	    printf("\tsetting low: %d high: %d diff: %d\n",
-	    	   low, high, high-low);
+		   low, high, high-low);
 	}
     }
 
@@ -1520,7 +1518,7 @@ define best_pow2()
 	printf("config(\"pow2\", %d),;\n", best_val);
 	printf("WARNING: It is believed that the output "
 	       "of this resource file is bogus!\n");
-	printf("WARNING: You may NOT wish to follow the above suggeston.\n");
+	printf("WARNING: You may NOT wish to follow the above suggestion.\n");
     }
     return mid;
 }

cal/beer.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: beer.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/beer.cal,v $
- *
  * Under source code control:	1996/11/13 13:21:05
  * File existed as early as:	1996
  *

cal/bernoulli.cal

@@ -1,7 +1,7 @@
 /*
- * bernoulli - clculate the Nth Bernoulli number B(n)
+ * bernoulli - calculate the Nth Bernoulli number B(n)
  *
- * Copyright (C) 2000  David I. Bell and Landon Curt Noll
+ * Copyright (C) 2000,2021  David I. Bell and Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: bernoulli.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/bernoulli.cal,v $
- *
  * Under source code control:	1991/09/30 11:18:41
  * File existed as early as:	1991
  *
@@ -30,9 +26,9 @@
 /*
  * Calculate the Nth Bernoulli number B(n).
  *
- * NOTE: This is now a bulitin function.
+ * NOTE: This is now a builtin function.
  *
- * The non-buildin code used the following symbolic formula to calculate B(n):
+ * The non-builtin code used the following symbolic formula to calculate B(n):
  *
  *	(b+1)^(n+1) - b^(n+1) = 0
  *
@@ -46,7 +42,7 @@
  *	B(3) = -(6*B(2) + 4*B(1) + 1) / 4
  *
  * The combinatorial factors in the expansion of the above formula are
- * calculated interatively, and we use the fact that B(2i+1) = 0 if i > 0.
+ * calculated interactively, and we use the fact that B(2i+1) = 0 if i > 0.
  * Since all previous B(n)'s are needed to calculate a particular B(n), all
  * values obtained are saved in an array for ease in repeated calculations.
  */

cal/bernpoly.cal

@@ -1,7 +1,7 @@
 /*
- * bernpoly - Bernoully polynomials B_n(z) for arbitrary n,z..
+ * bernpoly - Bernoulli polynomials B_n(z) for arbitrary n,z..
  *
- * Copyright (C) 2013 Christoph Zurnieden
+ * Copyright (C) 2013,2021 Christoph Zurnieden
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.4 $
- * @(#) $Id: bernpoly.cal,v 30.4 2013/08/18 20:01:53 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/bernpoly.cal,v $
- *
  * Under source code control:	2013/08/11 01:31:28
  * File existed as early as:	2013
  */

cal/bigprime.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: bigprime.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/bigprime.cal,v $
- *
  * Under source code control:	1991/05/22 21:56:32
  * File existed as early as:	1991
  *

cal/bindings

@@ -16,10 +16,6 @@
 # received a copy with calc; if not, write to Free Software Foundation, Inc.
 # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #
-# @(#) $Revision: 30.1 $
-# @(#) $Id: bindings,v 30.1 2007/03/16 11:09:54 chongo Exp $
-# @(#) $Source: /usr/local/src/bin/calc/cal/RCS/bindings,v $
-#
 # Under source code control:	1993/05/02 20:09:19
 # File existed as early as:	1993
 #

cal/brentsolve.cal

@@ -1,7 +1,7 @@
 /*
  * brentsolve - Root finding with the Brent-Dekker trick
  *
- * Copyright (C) 2013 Christoph Zurnieden
+ * Copyright (C) 2013,2021 Christoph Zurnieden
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.4 $
- * @(#) $Id: brentsolve.cal,v 30.4 2013/08/18 20:01:53 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/brentsolve.cal,v $
- *
  * Under source code control:	2013/08/11 01:31:28
  * File existed as early as:	2013
  */
@@ -147,7 +143,7 @@ define brentsolve2(low, high,which,eps){
 
   switch(param(0)){
     case 0:
-    case 1: return newerror("brentsolve2: not enough argments");
+    case 1: return newerror("brentsolve2: not enough arguments");
     case 2: eps = epsilon(epsilon()*1e-2);
             which = 0;break;
     case 3: eps = epsilon(epsilon()*1e-2);break;

cal/chi.cal

@@ -1,7 +1,7 @@
 /*
  * chi - chi^2 probabilities with degrees of freedom for null hypothesis
  *
- * Copyright (C) 2001  Landon Curt Noll
+ * Copyright (C) 2001,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: chi.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/chi.cal,v $
- *
  * Under source code control:	2001/03/27 14:10:11
  * File existed as early as:	2001
  *
@@ -44,7 +40,7 @@ define Z(x, eps_term)
 
     /* obtain the error term */
     if (isnull(eps_term)) {
-    	eps = epsilon();
+	eps = epsilon();
     } else {
 	eps = eps_term;
     }
@@ -55,7 +51,7 @@ define Z(x, eps_term)
 
 
 /*
- * P(x[, eps]) asymtotic P(x) expansion for x>0 to an given epsilon error term
+ * P(x[, eps]) asymptotic P(x) expansion for x>0 to an given epsilon error term
  *
  * NOTE: If eps is omitted, the stored epsilon value is used.
  *
@@ -85,7 +81,7 @@ define P(x, eps_term)
 
     /* obtain the error term */
     if (isnull(eps_term)) {
-    	eps = epsilon();
+	eps = epsilon();
     } else {
 	eps = eps_term;
     }
@@ -103,7 +99,7 @@ define P(x, eps_term)
     }
 
     /*
-     * aproximate sum(n=0; n < infinity){x^(2*n+1)/(1*3*5*...(2*n+1)}
+     * approximate sum(n=0; n < infinity){x^(2*n+1)/(1*3*5*...(2*n+1)}
      */
     x2 = x*x;
     x_term = x;
@@ -134,7 +130,7 @@ define P(x, eps_term)
  *
  *    The chi_prob() function does not work well with odd degrees of freedom.
  *    It is reasonable with even degrees of freedom, although one must give
- *    a sifficently small error term as the degress gets large (>100).
+ *    a sufficiently small error term as the degrees gets large (>100).
  *
  * NOTE: This function does not work well with odd degrees of freedom.
  *	 Can somebody help / find a bug / provide a better method of
@@ -190,7 +186,7 @@ define chi_prob(chi_sq, v, eps_term)
     local r;		/* index in finite sum */
     local r_lim;	/* limit value for r */
     local s;		/* sum */
-    local d;		/* demoninator (2*4*6*... or 1*3*5...) */
+    local d;		/* denominator (2*4*6*... or 1*3*5...) */
     local chi_term;	/* chi_sq^r */
     local ret;		/* return value */
 

cal/chrem.cal

@@ -1,7 +1,7 @@
 /*
- * chrem - chinese remainder theorem/problem solver
+ * chrem - Chinese remainder theorem/problem solver
  *
- * Copyright (C) 1999  Ernest Bowen and Landon Curt Noll
+ * Copyright (C) 1999,2021  Ernest Bowen and Landon Curt Noll
  *
  * Primary author:  Ernest Bowen
  *
@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: chrem.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/chrem.cal,v $
- *
  * Under source code control:	1992/09/26 01:00:47
  * File existed as early as:	1992
  *
@@ -30,7 +26,7 @@
  */
 
 /*
- * When possible, chrem finds solutions for x of a set of congruences
+ * When possible, chrem finds solutions for x of a set of congruence
  * of the form:
  *
  *			x = r1 (mod m1)
@@ -39,7 +35,7 @@
  *
  * where the residues r1, r2, ... and the moduli m1, m2, ... are
  * given integers.  The Chinese remainder theorem states that if
- * m1, m2, ... are relatively prime in pairs, the above congruences
+ * m1, m2, ... are relatively prime in pairs, the above congruence
  * have a unique solution modulo  m1 * m2 * ...	  If m1, m2, ...
  * are not relatively prime in pairs, it is possible that no solution
  * exists.  If solutions exist, the general solution is expressible as:

cal/constants.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.4 $
- * @(#) $Id: constants.cal,v 30.4 2013/08/18 20:01:53 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/constants.cal,v $
- *
  * Under source code control:	2013/08/11 01:31:28
  * File existed as early as:	2013
  */

cal/deg.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: deg.cal,v 30.2 2010/09/02 06:01:14 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/deg.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:33
  * File existed as early as:	before 1990
  *

cal/dms.cal

@@ -1,7 +1,7 @@
 /*
  * dms - calculate in degrees, minutes, and seconds (based on deg)
  *
- * Copyright (C) 1999,2010  David I. Bell and Landon Curt Noll
+ * Copyright (C) 1999,2010,2021  David I. Bell and Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: dms.cal,v 30.2 2010/09/02 06:14:16 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/dms.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:33
  * File existed as early as:	before 1990
  *
@@ -57,7 +53,7 @@ define dms_add(a, b)
 {
     local obj dms ans;		/* return value */
 
-    /* initalize value to 1st arg */
+    /* initialize value to 1st arg */
     if (istype(a, ans)) {
 	/* 1st arg is dms object, load it */
 	ans.deg = a.deg;
@@ -114,7 +110,7 @@ define dms_sub(a, b)
 {
     local obj dms ans;		/* return value */
 
-    /* initalize value to 1st arg */
+    /* initialize value to 1st arg */
     if (istype(a, ans)) {
 	/* 1st arg is dms object, load it */
 	ans.deg = a.deg;
@@ -192,7 +188,7 @@ define dms_abs(a)
 
     /* firewall - just absolute value non dms objects */
     if (! istype(a, ans)) {
-    	return abs(a);
+	return abs(a);
     }
 
     /* compute degrees */
@@ -356,24 +352,8 @@ define fixdms(a)
 	quit "attempt to fix a non dms object";
     }
 
-    /* force minutes to be intergral */
-    a.min += frac(a.deg) * 60;
-    a.deg = int(a.deg);
-
-    /* force degrees to be intergral */
-    a.sec += frac(a.min) * 60;
-    a.min = int(a.min);
-
-    /* carry excess seconds into minutes */
-    a.min += a.sec // 60;
-    a.sec %= 60;
-
-    /* carry excess minutes into degrees */
-    a.deg += a.min // 60;
-    a.min %= 60;
-
-    /* round degrees :-) */
-    a.deg %= 360;
+    /* use builtin d2dms function */
+    d2dms(a.deg + a.min/60 + a.sec/3600, a.deg, a.min, a.sec),;
 
     /* return normalized result */
     return a;

cal/dotest.cal

@@ -8,18 +8,14 @@
  * copyright this dotest_code.
  *
  * ERNEST BOWEN AND LANDON CURT NOLL DISCLAIMS ALL WARRANTIES WITH REGARD TO
- * THIS	 SOFTWARE,  INCLUDING  ALL IMPLIED WARRANTIES OF MER-
- * CHANTABILITY AND FITNESS.  IN NO EVENT SHALL	 LANDON	 CURT
+ * THIS         SOFTWARE,  INCLUDING  ALL IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS.  IN NO EVENT SHALL         LANDON  CURT
  * NOLL	 BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM  LOSS  OF
  * USE,	 DATA  OR  PROFITS, WHETHER IN AN ACTION OF CONTRACT,
  * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR  IN
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: dotest.cal,v 30.2 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/dotest.cal,v $
- *
  * This file is not covered under version 2.1 of the GNU LGPL.
  *
  * Under source dotest_code control:	2006/03/08 05:54:09
@@ -161,7 +157,7 @@ define dotest(dotest_file, dotest_code = 0, dotest_maxcond = -1)
      * test the close of the line file
      */
     printf("%d-: detected %d error condition(s), many of which may be OK\n",
-    	   dotest_code, dotest_old_errcount-dotest_errcnt);
+	   dotest_code, dotest_old_errcount-dotest_errcnt);
     printf("%d-: closing line file: %d\n", dotest_code, dotest_file);
     fclose(dotest_f_file);
 
@@ -177,7 +173,7 @@ define dotest(dotest_file, dotest_code = 0, dotest_maxcond = -1)
     }
 
     /*
-     * preppare to return to the caller environment
+     * prepare to return to the caller environment
      *
      * We increase the caller's error count by the number
      * of line tests that failed, not the number of internal

cal/ellip.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: ellip.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/ellip.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:33
  * File existed as early as:	before 1990
  *

cal/factorial.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.4 $
- * @(#) $Id: factorial.cal,v 30.4 2013/08/18 20:01:53 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/factorial.cal,v $
- *
  * Under source code control:	2013/08/11 01:31:28
  * File existed as early as:	2013
  */

cal/factorial2.cal

@@ -1,7 +1,7 @@
 /*
  * factorial2 - implementation of different factorial related functions
  *
- * Copyright (C) 2013 Christoph Zurnieden
+ * Copyright (C) 2013,2021 Christoph Zurnieden
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.4 $
- * @(#) $Id: factorial2.cal,v 30.4 2013/08/18 20:01:53 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/factorial2.cal,v $
- *
  * Under source code control:	2013/08/11 01:31:28
  * File existed as early as:	2013
  */
@@ -60,7 +56,7 @@ define __CZ__factor_factorial(n,start){
   if(start){
     if(!isint(start) && start < 0 && start > n)
       return newerror("__CZ__factor_factorial(n,start): value of "
-      		      "parameter 'start' out of range");
+		      "parameter 'start' out of range");
     if(start == n && isprime(n)){
       prime_list = mat[1 , 2];
       prime_list[0,0] = n;
@@ -68,7 +64,7 @@ define __CZ__factor_factorial(n,start){
     }
     else if(!isprime(start) && nextprime(start) >n)
       return newerror("__CZ__factor_factorial(n,start): value of parameter "
-      		      "'start' out of range");
+		      "'start' out of range");
     else{
       if(!isprime(start))  prime = nextprime(start);
       else prime = start;
@@ -229,11 +225,11 @@ define __CZ__multiply_factored_factorial(matrix,stop){
 
   if(!ismat(matrix))
    return newerror("__CZ__multiply_factored_factorial(matrix): "
-   		   "argument matrix not a matrix ");
+		   "argument matrix not a matrix ");
   if(!matrix[0,0])
     return
       newerror("__CZ__multiply_factored_factorial(matrix): "
-      	       "matrix[0,0] is null/0");
+	       "matrix[0,0] is null/0");
 
   if(!isnull(stop))
     pix = stop;
@@ -285,10 +281,10 @@ define __CZ__multiply_factored_factorial(matrix,stop){
 }
 
 /*
-    Compute binomial coeficients n!/(k!(n-k)!)
+    Compute binomial coefficients n!/(k!(n-k)!)
 
     One of the rare cases where a formula once meant to ease manual computation
-    is actually the (aymptotically) fastest way to do it (in July 2013) for
+    is actually the (asymptotically) fastest way to do it (in July 2013) for
     the extreme case binomial(2N,N) but for a high price, the memory
     needed is pi(N)--theoretically.
 */
@@ -380,7 +376,7 @@ define bigcatalan(n){
 
 /*
   df(-111) = -1/3472059605858239446587523014902616804783337112829102414124928
-  		7753332469144201839599609375
+		7753332469144201839599609375
 
  df(-3+1i) = 0.12532538977287649201-0.0502372106177184607i
  df(2n + 1) = (2*n)!/(n!*2^n)
@@ -431,7 +427,7 @@ define doublefactorial(n){
         */
        eps=epsilon(epsilon()*1e-2);
        ret =  2^(n/2-1/4 * cos(pi()* n)+1/4) * pi()^(1/4 *
-       	      cos(pi()* n)-1/4)* gamma(n/2+1);
+	      cos(pi()* n)-1/4)* gamma(n/2+1);
        epsilon(eps);
        return ret;
     }
@@ -630,7 +626,7 @@ define subfactorialrecursive(n){
   return n * subfactorialrecursive(n-1) + (-1)^n;
 }
 
-/* This is, quite amusingely, faster than the very same algorithm in
+/* This is, quite amusingly, faster than the very same algorithm in
    PARI/GP + GMP*/
 define subfactorialiterative(n){
   local k temp1 temp2 ret;

cal/gvec.cal

@@ -8,10 +8,6 @@
  * operation "function" must be first; calc doesn't care how many more
  * arguments there actually are.
  *
- * @(#) $Revision: 30.3 $
- * @(#) $Id: gvec.cal,v 30.3 2011/05/23 23:00:55 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/gvec.cal,v $
- *
  * Under source code control:   2011/03/31 17:54:55
  * File existed as early as:    2010
  *

cal/hello.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: hello.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/hello.cal,v $
- *
  * Under source code control:	1996/11/13 13:25:43
  * File existed as early as:	1996
  *

cal/hms.cal

@@ -1,7 +1,7 @@
 /*
  * hms - calculate in hours, minutes, and seconds
  *
- * Copyright (C) 2010  Landon Curt Noll
+ * Copyright (C) 2010,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: hms.cal,v 30.2 2010/09/02 06:14:16 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/hms.cal,v $
- *
  * Under source code control:	2010/09/01 17:14:55
  * File existed as early as:	2010
  *
@@ -57,7 +53,7 @@ define hms_add(a, b)
 {
     local obj hms ans;		/* return value */
 
-    /* initalize value to 1st arg */
+    /* initialize value to 1st arg */
     if (istype(a, ans)) {
 	/* 1st arg is hms object, load it */
 	ans.hour = a.hour;
@@ -114,7 +110,7 @@ define hms_sub(a, b)
 {
     local obj hms ans;		/* return value */
 
-    /* initalize value to 1st arg */
+    /* initialize value to 1st arg */
     if (istype(a, ans)) {
 	/* 1st arg is hms object, load it */
 	ans.hour = a.hour;
@@ -192,7 +188,7 @@ define hms_abs(a)
 
     /* firewall - just absolute value non hms objects */
     if (! istype(a, ans)) {
-    	return abs(a);
+	return abs(a);
     }
 
     /* compute hours */
@@ -356,24 +352,8 @@ define fixhms(a)
 	quit "attempt to fix a non hms object";
     }
 
-    /* force minutes to be intergral */
-    a.min += frac(a.hour) * 60;
-    a.hour = int(a.hour);
-
-    /* force hours to be intergral */
-    a.sec += frac(a.min) * 60;
-    a.min = int(a.min);
-
-    /* carry excess seconds into minutes */
-    a.min += a.sec // 60;
-    a.sec %= 60;
-
-    /* carry excess minutes into hours */
-    a.hour += a.min // 60;
-    a.min %= 60;
-
-    /* round hours by day */
-    a.hour %= 24;
+    /* use builtin h2hms function */
+    h2hms(a.hour + a.min/60 + a.sec/3600, a.hour, a.min, a.sec),;
 
     /* return normalized result */
     return a;

cal/intfile.cal

@@ -1,7 +1,7 @@
 /*
  * intfile - integer to file and file to integer conversion
  *
- * Copyright (C) 2001  Landon Curt Noll
+ * Copyright (C) 2001,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: intfile.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/intfile.cal,v $
- *
  * Under source code control:   2001/03/31 08:13:11
  * File existed as early as:    2001
  *
@@ -31,20 +27,20 @@
 
 /*
  * NOTE: Because leading HALF values are trimmed from integer, a file
- *	 that begins with lots of 0 bits (in the case of big endian)
- *	 or that ends with lots of 0 bits (in the case of little endian)
+ *	 that begins with lots of 0 bits (in the case of big Endian)
+ *	 or that ends with lots of 0 bits (in the case of little Endian)
  *	 will be changed when the subsequent integer is written back.
  */
 
 
 /*
- * file2be - convert a file into an big endian integer
+ * file2be - convert a file into an big Endian integer
  *
  * given:
  *	filename	filename to read
  *
  * returns:
- *	integer read from its contents on big endian order
+ *	integer read from its contents on big Endian order
  */
 define file2be(filename)
 {
@@ -79,13 +75,13 @@ define file2be(filename)
 
 
 /*
- * file2le - convert a file into an little endian integer
+ * file2le - convert a file into an little Endian integer
  *
  * given:
  *	filename	filename to read
  *
  * returns:
- *	integer read from its contents on little endian order
+ *	integer read from its contents on little Endian order
  */
 define file2le(filename)
 {
@@ -122,7 +118,7 @@ define file2le(filename)
 
 
 /*
- * be2file - convert a big endian integer into a file
+ * be2file - convert a big Endian integer into a file
  *
  * given:
  *	v		integer to write to the file
@@ -160,7 +156,7 @@ define be2file(v, filename)
      */
     octlen = int((highbit(v)+8) / 8);
     for (i=octlen-1; i >= 0; --i) {
-    	fputc(fd, char(v >> (i*8)));
+	fputc(fd, char(v >> (i*8)));
     }
 
     /*
@@ -172,7 +168,7 @@ define be2file(v, filename)
 
 
 /*
- * le2file - convert a little endian integer into a file
+ * le2file - convert a little Endian integer into a file
  *
  * given:
  *	v		integer to write to the file

cal/intnum.cal

@@ -1,7 +1,7 @@
 /*
  * intnum - implementation of tanhsinh- and Gauss-Legendre quadrature
  *
- * Copyright (C) 2013 Christoph Zurnieden
+ * Copyright (C) 2013,2021 Christoph Zurnieden
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -295,7 +295,7 @@ define quadts(a, b, points)
                  * as the number of equally spaced intervals on a straight line
                  * connecting a and b. Computing the segments here is a bit
                  * more complicated but not much, it should have been taught in
-                 * highschool.
+                 * high school.
 		 * Other contours by way of a list of points */
 		slope = (im(b) - im(a)) / (re(b) - re(a));
 		C = (im(a) + slope) * re(a);

cal/lambertw.cal

@@ -1,7 +1,7 @@
 /*
  * lambertw - Lambert's W-function
  *
- * Copyright (C) 2013 Christoph Zurnieden
+ * Copyright (C) 2013,2021 Christoph Zurnieden
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.4 $
- * @(#) $Id: lambertw.cal,v 30.4 2013/08/18 20:01:53 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/lambertw.cal,v $
- *
  * Under source code control:	2013/08/11 01:31:28
  * File existed as early as:	2013
  */
@@ -87,7 +83,7 @@ define __CZ__lambertw_m1(z,eps){
   or by using the function lambertw_series_print() after running
   lambertw_series(z,eps,branch,terms) at least once with the wanted number of
   terms and z = 1 (which might throw an error because the series will not
-  converge in anybodies lifetime for something that far from the branchpoint).
+  converge in anybodies lifetime for something that far from the branch point).
 
 
 */
@@ -109,7 +105,7 @@ define lambertw_series_print(){
 }
 
 /*
-   The series is fast but only if _very_ close to the branchpoint
+   The series is fast but only if _very_ close to the branch point
    The exact branch must be given explicitly, e.g.:
 
 ; lambertw(-exp(-1)+.001)-lambertw_series(-exp(-1)+.001,epsilon()*1e-10,0)

cal/linear.cal

@@ -1,7 +1,7 @@
 /*
  * linear - perform a simple two point 2D linear interpolation
  *
- * Copyright (C) 2005-2007  Landon Curt Noll
+ * Copyright (C) 2005-2007,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: linear.cal,v 30.2 2007/03/17 05:57:42 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/linear.cal,v $
- *
  * Under source code control:	2005/12/12 06:41:50
  * File existed as early as:	2005
  *
@@ -33,7 +29,7 @@
  *
  * given:
  *	x0, y0		first known point on the line
- *	x1, y1		second knonw point on the line
+ *	x1, y1		second known point on the line
  *	x		a given point to interpolate on
  *
  * returns:

cal/lnseries.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.4 $
- * @(#) $Id: lnseries.cal,v 30.4 2013/08/18 20:01:53 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/lnseries.cal,v $
- *
  * Under source code control:	2013/08/11 01:31:28
  * File existed as early as:	2013
  */

cal/lucas_chk.cal

@@ -1,7 +1,7 @@
 /*
  * lucas_chk - test all primes of the form h*2^n-1, 1<=h<200 and n <= high_n
  *
- * Copyright (C) 1999  Landon Curt Noll
+ * Copyright (C) 1999,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: lucas_chk.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/lucas_chk.cal,v $
- *
  * Under source code control:	1991/01/11 05:41:43
  * File existed as early as:	1991
  *
@@ -307,7 +303,7 @@ read -once "lucas.cal";
  *	[quiet] if given and != 0, then do not print individual test results
  *
  * returns:
- *	1	all is ok
+ *	1	all is OK
  *	0	something went wrong
  */
 define

cal/lucas_tbl.cal

@@ -1,165 +0,0 @@
-/*
- * lucas_tbl - lucasian criteria for primality tables
- *
- * Copyright (C) 1999  Landon Curt Noll
- *
- * Calc is open software; you can redistribute it and/or modify it under
- * the terms of the version 2.1 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * Calc is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
- * Public License for more details.
- *
- * A copy of version 2.1 of the GNU Lesser General Public License is
- * distributed with calc under the filename COPYING-LGPL.  You should have
- * received a copy with calc; if not, write to Free Software Foundation, Inc.
- * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: lucas_tbl.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/lucas_tbl.cal,v $
- *
- * Under source code control:	1991/01/26 02:43:43
- * File existed as early as:	1991
- *
- * chongo <was here> /\oo/\	http://www.isthe.com/chongo/
- * Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
- */
-
-/*
- * Lucasian criteria for primality
- *
- * The following table is taken from:
- *
- *	"Lucasian Criteria for the Primality of N=h*2^n-1", by Hans Riesel,
- *	Mathematics of Computation, Vol 23 #108, p 872.
- *
- * The index of the *_val[] arrays correspond to the v(1) values found
- * in the table.  That is, for v(1) == x:
- *
- *	D == d_val[x]
- *	a == a_val[x]
- *	b == b_val[x]
- *	r == r_val[x]		(r == abs(a^2 - b^2*D))
- *
- *
- * Note that when *_val[i] is not a number, the related v(1) value
- * is not found in Table 1.
- */
-
-
-trymax = 100;
-mat d_val[trymax+1];
-mat a_val[trymax+1];
-mat b_val[trymax+1];
-mat r_val[trymax+1];
-/* v1= 0	    INVALID */
-/* v1= 1	    INVALID */
-/* v1= 2	    INVALID */
-d_val[ 3]=   5;	 a_val[ 3]= 1;	b_val[ 3]=1;  r_val[ 3]=4;
-d_val[ 4]=   3;	 a_val[ 4]= 1;	b_val[ 4]=1;  r_val[ 4]=2;
-d_val[ 5]=  21;	 a_val[ 5]= 3;	b_val[ 5]=1;  r_val[ 5]=12;
-d_val[ 6]=   2;	 a_val[ 6]= 1;	b_val[ 6]=1;  r_val[ 6]=1;
-/* v1= 7	    INVALID */
-d_val[ 8]=  15;	 a_val[ 8]= 3;	b_val[ 8]=1;  r_val[ 8]=6;
-d_val[ 9]=  77;	 a_val[ 9]= 7;	b_val[ 9]=1;  r_val[ 9]=28;
-d_val[10]=   6;	 a_val[10]= 2;	b_val[10]=1;  r_val[10]=2;
-d_val[11]=  13;	 a_val[11]= 3;	b_val[11]=1;  r_val[11]=4;
-d_val[12]=  35;	 a_val[12]= 5;	b_val[12]=1;  r_val[12]=10;
-d_val[13]= 165;	 a_val[13]=11;	b_val[13]=1;  r_val[13]=44;
-/* v1=14	    INVALID */
-d_val[15]= 221;	 a_val[15]=13;	b_val[15]=1;  r_val[15]=52;
-d_val[16]=   7;	 a_val[16]= 3;	b_val[16]=1;  r_val[16]=2;
-d_val[17]= 285;	 a_val[17]=15;	b_val[17]=1;  r_val[17]=60;
-/* v1=18	    INVALID */
-d_val[19]= 357;	 a_val[19]=17;	b_val[19]=1;  r_val[19]=68;
-d_val[20]=  11;	 a_val[20]= 3;	b_val[20]=1;  r_val[20]=2;
-d_val[21]= 437;	 a_val[21]=19;	b_val[21]=1;  r_val[21]=76;
-d_val[22]=  30;	 a_val[22]= 5;	b_val[22]=1;  r_val[22]=5;
-/* v1=23	    INVALID */
-d_val[24]= 143;	 a_val[24]=11;	b_val[24]=1;  r_val[24]=22;
-d_val[25]=  69;	 a_val[25]= 9;	b_val[25]=1;  r_val[25]=12;
-d_val[26]=  42;	 a_val[26]= 6;	b_val[26]=1;  r_val[26]=6;
-d_val[27]=  29;	 a_val[27]= 5;	b_val[27]=1;  r_val[27]=4;
-d_val[28]= 195;	 a_val[28]=13;	b_val[28]=1;  r_val[28]=26;
-d_val[29]=  93;	 a_val[29]= 9;	b_val[29]=1;  r_val[29]=12;
-d_val[30]=  14;	 a_val[30]= 4;	b_val[30]=1;  r_val[30]=2;
-d_val[31]= 957;	 a_val[31]=29;	b_val[31]=1;  r_val[31]=116;
-d_val[32]= 255;	 a_val[32]=15;	b_val[32]=1;  r_val[32]=30;
-d_val[33]=1085;	 a_val[33]=31;	b_val[33]=1;  r_val[33]=124;
-/* v1=34	    INVALID */
-d_val[35]=1221;	 a_val[35]=33;	b_val[35]=1;  r_val[35]=132;
-d_val[36]= 323;	 a_val[36]=17;	b_val[36]=1;  r_val[36]=34;
-d_val[37]=1365;	 a_val[37]=35;	b_val[37]=1;  r_val[37]=140;
-d_val[38]=  10;	 a_val[38]= 3;	b_val[38]=1;  r_val[38]=1;
-d_val[39]=1517;	 a_val[39]=37;	b_val[39]=1;  r_val[39]=148;
-d_val[40]= 399;	 a_val[40]=19;	b_val[40]=1;  r_val[40]=38;
-d_val[41]=1677;	 a_val[41]=39;	b_val[41]=1;  r_val[41]=156;
-d_val[42]= 110;	 a_val[42]=10;	b_val[42]=1;  r_val[42]=10;
-d_val[43]= 205;	 a_val[43]=15;	b_val[43]=1;  r_val[43]=20;
-d_val[44]= 483;	 a_val[44]=21;	b_val[44]=1;  r_val[44]=42;
-d_val[45]=2021;	 a_val[45]=43;	b_val[45]=1;  r_val[45]=172;
-d_val[46]=  33;	 a_val[46]= 6;	b_val[46]=1;  r_val[46]=3;
-/* v1=47	    INVALID */
-d_val[48]=  23;	 a_val[48]= 5;	b_val[48]=1;  r_val[48]=2;
-d_val[49]=2397;	 a_val[49]=47;	b_val[49]=1;  r_val[49]=188;
-d_val[50]=  39;	 a_val[50]= 6;	b_val[50]=1;  r_val[50]=3;
-d_val[51]=  53;	 a_val[51]= 7;	b_val[51]=1;  r_val[51]=4;
-/* v1=52	    INVALID */
-d_val[53]=2805;	 a_val[53]=51;	b_val[53]=1;  r_val[53]=204;
-d_val[54]= 182;	 a_val[54]=13;	b_val[54]=1;  r_val[54]=13;
-d_val[55]=3021;	 a_val[55]=53;	b_val[55]=1;  r_val[55]=212;
-d_val[56]=  87;	 a_val[56]= 9;	b_val[56]=1;  r_val[56]=6;
-d_val[57]=3245;	 a_val[57]=55;	b_val[57]=1;  r_val[57]=220;
-d_val[58]= 210;	 a_val[58]=14;	b_val[58]=1;  r_val[58]=14;
-d_val[59]=3477;	 a_val[59]=57;	b_val[59]=1;  r_val[59]=228;
-d_val[60]= 899;	 a_val[60]=29;	b_val[60]=1;  r_val[60]=58;
-d_val[61]= 413;	 a_val[61]=21;	b_val[61]=1;  r_val[61]=28;
-/* v1=62	    INVALID */
-d_val[63]=3965;	 a_val[63]=61;	b_val[63]=1;  r_val[63]=244;
-d_val[64]=1023;	 a_val[64]=31;	b_val[64]=1;  r_val[64]=62;
-d_val[65]= 469;	 a_val[65]=21;	b_val[65]=1;  r_val[65]=28;
-d_val[66]=  17;	 a_val[66]= 4;	b_val[66]=1;  r_val[66]=1;
-d_val[67]=4485;	 a_val[67]=65;	b_val[67]=1;  r_val[67]=260;
-d_val[68]=1155;	 a_val[68]=33;	b_val[68]=1;  r_val[68]=66;
-d_val[69]=4757;	 a_val[69]=67;	b_val[69]=1;  r_val[69]=268;
-d_val[70]=  34;	 a_val[70]= 6;	b_val[70]=1;  r_val[70]=2;
-d_val[71]=5037;	 a_val[71]=69;	b_val[71]=1;  r_val[71]=276;
-d_val[72]=1295;	 a_val[72]=35;	b_val[72]=1;  r_val[72]=70;
-d_val[73]= 213;	 a_val[73]=15;	b_val[73]=1;  r_val[73]=12;
-d_val[74]=  38;	 a_val[74]= 6;	b_val[74]=1;  r_val[74]=2;
-d_val[75]=5621;	 a_val[75]=73;	b_val[75]=1;  r_val[75]=292;
-d_val[76]=1443;	 a_val[76]=37;	b_val[76]=1;  r_val[76]=74;
-d_val[77]= 237;	 a_val[77]=15;	b_val[77]=1;  r_val[77]=12;
-d_val[78]=  95;	 a_val[78]=10;	b_val[78]=1;  r_val[78]=5;
-/* v1=79	    INVALID */
-d_val[80]=1599;	 a_val[80]=39;	b_val[80]=1;  r_val[80]=78;
-d_val[81]=6557;	 a_val[81]=79;	b_val[81]=1;  r_val[81]=316;
-d_val[82]= 105;	 a_val[82]=10;	b_val[82]=1;  r_val[82]=5;
-d_val[83]=  85;	 a_val[83]= 9;	b_val[83]=1;  r_val[83]=4;
-d_val[84]=1763;	 a_val[84]=41;	b_val[84]=1;  r_val[84]=82;
-d_val[85]=7221;	 a_val[85]=83;	b_val[85]=1;  r_val[85]=332;
-d_val[86]= 462;	 a_val[86]=21;	b_val[86]=1;  r_val[86]=21;
-d_val[87]=7565;	 a_val[87]=85;	b_val[87]=1;  r_val[87]=340;
-d_val[88]= 215;	 a_val[88]=15;	b_val[88]=1;  r_val[88]=10;
-d_val[89]=7917;	 a_val[89]=87;	b_val[89]=1;  r_val[89]=348;
-d_val[90]= 506;	 a_val[90]=22;	b_val[90]=1;  r_val[90]=22;
-d_val[91]=8277;	 a_val[91]=89;	b_val[91]=1;  r_val[91]=356;
-d_val[92]= 235;	 a_val[92]=15;	b_val[92]=1;  r_val[92]=10;
-d_val[93]=8645;	 a_val[93]=91;	b_val[93]=1;  r_val[93]=364;
-d_val[94]= 138;	 a_val[94]=12;	b_val[94]=1;  r_val[94]=6;
-d_val[95]=9021;	 a_val[95]=93;	b_val[95]=1;  r_val[95]=372;
-d_val[96]=  47;	 a_val[96]= 7;	b_val[96]=1;  r_val[96]=2;
-d_val[97]=1045;	 a_val[97]=33;	b_val[97]=1;  r_val[97]=44;
-/* v1=98	    INVALID */
-d_val[99]=9797;	 a_val[99]=97;	b_val[99]=1;  r_val[99]=388;
-d_val[100]=  51; a_val[100]= 7; b_val[100]=1; r_val[100]=2;
-
-if (config("resource_debug") & 3) {
-    print "d_val[100] defined";
-    print "a_val[100] defined";
-    print "b_val[100] defined";
-    print "r_val[100] defined";
-}

cal/mersenne.cal

@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: mersenne.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/mersenne.cal,v $
- *
  * Under source code control:	1991/05/22 21:56:36
  * File existed as early as:	1991
  *

cal/mfactor.cal

@@ -1,7 +1,7 @@
 /*
  * mfactor - return the lowest factor of 2^n-1, for n > 0
  *
- * Copyright (C) 1999  Landon Curt Noll
+ * Copyright (C) 1999,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: mfactor.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/mfactor.cal,v $
- *
  * Under source code control:	1996/07/06 06:09:40
  * File existed as early as:	1996
  *
@@ -83,7 +79,7 @@
  *		hindx = 0;
  *	} while (test_factor < some_limit);
  *
- * The test, mfactor(67, 1, 10000) took on an 200 Mhz r4k (user CPU seconds):
+ * The test, mfactor(67, 1, 10000) took on an 200 MHz r4k (user CPU seconds):
  *
  *	210.83	(prior to use of hset[])
  *	 78.35	(hset[] for p_elim = 7)
@@ -103,7 +99,7 @@
  *	 57.78	(hset[] for p_elim = 17)
  *	 p_elim == 19 rejected because of memory size
  *
- * The p_elim == 17 overhead takes ~3 minutes on an 200 Mhz r4k CPU and
+ * The p_elim == 17 overhead takes ~3 minutes on an 200 MHz r4k CPU and
  * requires about ~13 Megs of memory.  The p_elim == 13 overhead
  * takes about 3 seconds and requires ~1.5 Megs of memory.
  *
@@ -260,7 +256,7 @@ define mfactor(n, start_k, rept_loop, p_elim)
 		return q;
 	} else {
 		/* report this loop */
-		printf("at 2*%d*%d+1, cpu: %f\n",
+		printf("at 2*%d*%d+1, CPU: %f\n",
 			(q-1)/(2*n), n, usertime());
 		fflush(files(1));
 		loop = 0;
@@ -273,14 +269,14 @@ define mfactor(n, start_k, rept_loop, p_elim)
 		 */
 		if (rept_loop <= ++loop) {
 			/* report this loop */
-			printf("at 2*%d*%d+1, cpu: %f\n",
+			printf("at 2*%d*%d+1, CPU: %f\n",
 				(q-1)/(2*n), n, usertime());
 			fflush(files(1));
 			loop = 0;
 		}
 
 		/*
-		 * skip if divisable by a prime <= 449
+		 * skip if divisible by a prime <= 449
 		 *
 		 * The value 281 was determined by timing loops
 		 * which found that 281 was at or near the
@@ -289,7 +285,7 @@ define mfactor(n, start_k, rept_loop, p_elim)
 		 * The addition of the do { ... } while (factor(q, 449)>1);
 		 * loop reduced the factoring loop time (36504 k values with
 		 * the hset[] initialization time removed) from 25.69 sec to
-		 * 15.62 sec of CPU time on a 200Mhz r4k.
+		 * 15.62 sec of CPU time on a 200MHz r4k.
 		 */
 		do {
 			/*

cal/mod.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: mod.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/mod.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:34
  * File existed as early as:	before 1990
  *

cal/natnumset.cal

@@ -1,7 +1,7 @@
 /*
  * natnumset - functions for sets of natural numbers not exceeding a fixed bound
  *
- * Copyright (C) 1999  Ernest Bowen
+ * Copyright (C) 1999,2021  Ernest Bowen
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: natnumset.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/natnumset.cal,v $
- *
  * Under source code control:	1997/09/07 23:53:51
  * File existed as early as:	1997
  *
@@ -80,7 +76,7 @@
  *	A \ B = set difference, integers in A but not in B
  *
  *	~A	= complement of A, integers not in A
- *	#A	= number ofintegers in A
+ *	#A	= number of integers in A
  *	!A	= 1 or 0 according as A is empty or not empty
  *	+A	= sum of the members of A
  *
@@ -104,7 +100,7 @@
  *	A >= B = (B <= A)
  *	A > B = (B < A)
  *
- * Expresssions may be formed from the above "arithmetic" operations in
+ * Expressions may be formed from the above "arithmetic" operations in
  * the usual way, with parentheses for variations from the usual precedence
  * rules.  For example
  *

cal/palindrome.cal

@@ -0,0 +1,641 @@
+/*
+ * palindrome - palindrome utilities
+ *
+ * Copyright (C) 2021  Landon Curt Noll
+ *
+ * Calc is open software; you can redistribute it and/or modify it under
+ * the terms of the version 2.1 of the GNU Lesser General Public License
+ * as published by the Free Software Foundation.
+ *
+ * Calc is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
+ * Public License for more details.
+ *
+ * A copy of version 2.1 of the GNU Lesser General Public License is
+ * distributed with calc under the filename COPYING-LGPL.  You should have
+ * received a copy with calc; if not, write to Free Software Foundation, Inc.
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Under source code control:	2021/11/06 14:35:37
+ * File existed as early as:	2021
+ *
+ * Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
+ */
+
+
+/*
+ * digitof - return the a digit of a value
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	val	value to find a digit of
+ *	place	digit place
+ *
+ * returns:
+ * 	value (>= 0 and < 10) that is the place-th digit of val
+ *	or 0 if place is not a digit of val
+ */
+define digitof(val, place)
+{
+    local d;	/* length of val in digits */
+
+    /* determine length */
+    d = digits(val);
+
+    /* firewall - return 0 if digit place doesn't exist */
+    if (place < 1 || place > d) {
+	return 0;
+    }
+
+    /* return the place-th digit of val as a single digit */
+    return  (val // (10^(place-1))) % 10;
+}
+
+
+/*
+ * copalplace - determine the other place in a palindrome
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	d	digits of a value
+ *	place	digit place
+ *
+ * returns:
+ *	given palindrome val, the other digit paired with place
+ *	or 0 if place is not a digit of val
+ */
+define copalplace(d, place)
+{
+    /* firewall - return 0 if digit place doesn't exist */
+    if (d < 1 || place < 1 || place > d) {
+	return 0;
+    }
+
+    /* return digit coplace */
+    return d+1 - place;
+}
+
+
+/*
+ * upperhalf - return the upper half of a palindrome
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * NOTE: When the value has an odd number of digits, the upper half
+ *	 includes the middle digit.
+ *
+ * given:
+ *	val	a value
+ *
+ * returns:
+ * 	the upper half digits of a value
+ */
+define upperhalf(val)
+{
+    local d;		/* length of val in digits */
+    local halfd;	/* length of upper hand of val */
+
+    /* determine length */
+    d = digits(val);
+    halfd = d // 2;
+
+    /* return upper half */
+    return (val // 10^halfd);
+}
+
+
+/*
+ * mkpal - make a value into a palindrome
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	val	a value
+ *
+ * returns:
+ * 	val as a palindrome with lower half being reverse digits of val
+ */
+define mkpal(val)
+{
+    local d;	/* length of val in digits */
+    local i;	/* counter */
+    local ret;	/* palindrome being formed */
+
+    /* determine length */
+    d = digits(val);
+
+    /* insert digits in reverse order at the bottom */
+    ret = val;
+    for (i=0; i < d; ++i) {
+	ret = ret*10 + digit(val, i);
+    }
+    return ret;
+}
+
+
+/*
+ * mkpalmiddigit - make a value into a palindrome with a middle digit
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	val	a value
+ *	digit	the digit to put into the middle of the palindrome
+ *
+ * returns:
+ * 	val as a palindrome with lower half being reverse digits of val
+ *		and digit as a middle digit
+ */
+define mkpalmiddigit(val, digit)
+{
+    local d;	/* length of val in digits */
+    local i;	/* counter */
+    local ret;	/* palindrome being formed */
+
+    /* determine length */
+    d = digits(val);
+
+    /* insert digits in reverse order at the bottom */
+    ret = val*10 + digit;
+    for (i=0; i < d; ++i) {
+	ret = ret*10 + digit(val, i);
+    }
+    return ret;
+}
+
+
+/*
+ * ispal - determine if a value is a palindrome
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	val	a value
+ *
+ * returns:
+ * 	1 ==> val is a palindrome
+ * 	0 ==> val is NOT a palindrome
+ */
+define ispal(val)
+{
+    local half;		/* upper half of digits of val */
+    local digit;	/* middle digit */
+
+    /* case: val has an even number of digits */
+    if (iseven(digits(val))) {
+
+	/* test palindrome-ness */
+	return (val == mkpal(upperhalf(val)));
+
+    /* case: val can an odd number of digits */
+    } else {
+
+	/* test palindrome-ness */
+	half = upperhalf(val);
+	digit = half % 10;
+	half //= 10;
+	return (val == mkpalmiddigit(half, digit));
+    }
+}
+
+
+/*
+ * palnextpal - return next palindrome from a known palindrome
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	pal	a palindrome
+ *
+ * returns:
+ *	next palindrome > pal
+ */
+define palnextpal(pal)
+{
+    local paldigits;	/* digits in pal */
+    local half;		/* upper half of newval */
+    local newhalf;	/* half+1 */
+    local newpal;	/* new palindrome */
+
+    /* case: negative palindrome */
+    if (pal < 0) {
+	return -(palprevpal(-pal));
+    }
+
+    /*
+     * start with upper half
+     */
+    half = upperhalf(pal);
+
+    /*
+     * prep to find a larger palindrome
+     */
+    newhalf = half+1;
+
+    /*
+     * form palindrome from new upper half
+     *
+     * We need to watch for the corner case where changing the
+     * half changes the number of digits as this will impact
+     * or even/odd number of digits processing.
+     */
+    paldigits = digits(pal);
+    if (digits(newhalf) == digits(half)) {
+	/* no change in half digits: process as normal */
+	if (iseven(paldigits)) {
+	    newpal = mkpal(newhalf);
+	} else {
+	    newpal = mkpalmiddigit(newhalf // 10, newhalf % 10);
+	}
+    } else {
+	/* change in half digits: process as opposite */
+	if (iseven(paldigits)) {
+	    newpal = mkpalmiddigit(newhalf // 10, newhalf % 10);
+	} else {
+	    newpal = mkpal(newhalf);
+	}
+    }
+
+    /*
+     * return the new palindrome
+     */
+    return newpal;
+}
+
+
+/*
+ * nextpal - return next palindrome from a value
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	val	a value
+ *
+ * returns:
+ *	next palindrome > val
+ */
+define nextpal(val)
+{
+    local newval;	/* val+1 */
+    local newvaldigits;	/* digits in newval */
+    local half;		/* upper half of newval */
+    local pal;		/* palindrome test value */
+    local newpal;	/* new palindrome */
+
+    /* case: negative value */
+    if (val < 0) {
+	return -(prevpal(-val));
+    }
+
+    /*
+     * start looking from a larger value
+     */
+    newval = val+1;
+    newvaldigits = digits(newval);
+
+    /* case: single digit palindrome */
+    if (newvaldigits < 2) {
+	return newval;
+    }
+
+    /*
+     * start with next upper half
+     */
+    half = upperhalf(newval);
+
+    /*
+     * form palindrome from upper half
+     *
+     * We need to deal with even vs. odd digit counts
+     * when forming a palindrome from a half as the
+     * half may not or may include the middle digit.
+     */
+    if (iseven(newvaldigits)) {
+	pal = mkpal(half);
+    } else {
+	pal = mkpalmiddigit(half // 10, half % 10);
+    }
+
+    /*
+     * case: we found a larger palindrome, we are done
+     */
+    if (pal > val) {
+	return pal;
+    }
+
+    /*
+     * we need to find an even larger palindrome
+     */
+    newpal = palnextpal(pal);
+
+    /*
+     * return the new palindrome
+     */
+    return newpal;
+}
+
+
+/*
+ * palprevpal - return previous palindrome from a palindrome
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	pal	a palindrome
+ *
+ * returns:
+ *	previous palindrome < pal
+ */
+define palprevpal(pal)
+{
+    local paldigits;	/* digits in pal */
+    local half;		/* upper half of newval */
+    local newhalf;	/* half+1 */
+    local newpal;	/* new palindrome */
+
+    /* case: negative value */
+    if (pal < 0) {
+	return -(palnextpal(-pal));
+    }
+
+    /* case: single digit palindrome */
+    if (pal < 10) {
+	newpal = pal-1;
+	return newpal;
+    }
+
+    /* case: 10 or 11 */
+    if (pal < 12) {
+	newpal = 9;
+	return newpal;
+    }
+
+    /*
+     * start with upper half
+     */
+    half = upperhalf(pal);
+
+    /*
+     * prep to find a smaller palindrome
+     */
+    newhalf = half-1;
+
+    /*
+     * form palindrome from new upper half
+     *
+     * We need to watch for the corner case where changing the
+     * half changes the number of digits as this will impact
+     * or even/odd number of digits processing.
+     */
+    paldigits = digits(pal);
+    if (digits(newhalf) == digits(half)) {
+	/* no change in half digits: process as normal */
+	if (iseven(paldigits)) {
+	    newpal = mkpal(newhalf);
+	} else {
+	    newpal = mkpalmiddigit(newhalf // 10, newhalf % 10);
+	}
+    } else {
+	/* change in half digits: process as opposite */
+	if (iseven(paldigits)) {
+	    newpal = mkpalmiddigit(newhalf // 10, newhalf % 10);
+	} else {
+	    newpal = mkpal(newhalf);
+	}
+    }
+
+    /*
+     * return the new palindrome
+     */
+    return newpal;
+}
+
+
+/*
+ * prevpal - return previous palindrome from a value
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	val	a value
+ *
+ * returns:
+ *	previous palindrome < val
+ */
+define prevpal(val)
+{
+    local newval;	/* val-1 */
+    local newvaldigits;	/* digits in newval */
+    local half;		/* upper half of newval */
+    local pal;		/* palindrome test value */
+    local newpal;	/* new palindrome */
+
+    /* case: negative value */
+    if (val < 0) {
+	return -(nextpal(-val));
+    }
+
+    /*
+     * start looking from a smaller value
+     */
+    newval = val-1;
+    newvaldigits = digits(newval);
+
+    /* case: single digit palindrome */
+    if (newvaldigits < 2) {
+	return newval;
+    }
+
+    /*
+     * start with previous upper half
+     */
+    half = upperhalf(newval);
+
+    /*
+     * form palindrome from upper half
+     *
+     * We need to deal with even vs. odd digit counts
+     * when forming a palindrome from a half as the
+     * half may not or may include the middle digit.
+     */
+    if (iseven(newvaldigits)) {
+	pal = mkpal(half);
+    } else {
+	pal = mkpalmiddigit(half // 10, half % 10);
+    }
+
+    /*
+     * case: we found a smaller palindrome, we are done
+     */
+    if (pal < val) {
+	return pal;
+    }
+
+    /*
+     * we need to find an even smaller palindrome
+     */
+    newpal = palprevpal(pal);
+
+    /*
+     * return the new palindrome
+     */
+    return newpal;
+}
+
+
+/*
+ * nextprimepal - return next palindrome that is a (highly probable) prime
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	val	a value
+ *
+ * returns:
+ *	next palindrome (highly probable) prime > val
+ */
+define nextprimepal(val)
+{
+    local pal;		/* palindrome test value */
+    local dpal;		/* digits in pal */
+
+    /*
+     * pre-start under the next palindrome
+     */
+    pal = nextpal(val-1);
+
+    /*
+     * loop until we find a (highly probable) prime or 0
+     */
+    do {
+
+	/* case: negative values and tiny values */
+	if (pal < 2) {
+	    return 2;
+	}
+
+	/*
+	 * compute the next palindrome
+	 */
+	pal = palnextpal(pal);
+	dpal = digits(pal);
+
+	/* case: 11 is the only prime palindrome with even digit count */
+	if (pal == 11) {
+	    return 11;
+	}
+
+	/* case: even number of digits and not 11 */
+	if (iseven(dpal)) {
+
+	    /*
+	     * Except for 11 (which is handled above already), there are
+	     * no prime palindrome with even digits.  So we need to
+	     * increase the digit count and work with that larger palindrome.
+	     */
+	    pal = nextpal(10^dpal);
+	}
+
+	/* case: palindrome is even or ends in 5 */
+	if (iseven(pal % 10) || (pal%10 == 10/2)) {
+
+	    /*
+	     * we need to increase the bottom and top digits
+	     * so that we have a chance to be prime
+	     */
+	    pal += (1 + 10^(dpal-1));
+	}
+	if (config("resource_debug") & 0x8) {
+	    print "DEBUG: nextprimepal:", pal;
+	}
+    } while (ptest(pal) == 0 && pal > 0);
+
+    /* return palindrome that his (highly probable) prime or 0 */
+    return pal;
+}
+
+
+/*
+ * prevprimepal - return prev palindrome that is a (highly probable) prime
+ *
+ * NOTE: We assume base 10 digits and place 1 is the units digit.
+ *
+ * given:
+ *	val	a value
+ *
+ * returns:
+ *	prev palindrome (highly probable) prime < val or 0
+ */
+define prevprimepal(val)
+{
+    local pal;		/* palindrome test value */
+    local dpal;		/* digits in pal */
+
+    /*
+     * pre-start over the previous palindrome
+     */
+    pal = prevpal(val+1);
+
+    /*
+     * loop until we find a (highly probable) prime or 0
+     */
+    do {
+
+	/*
+	 * case: single digit values are always palindromes
+	 */
+	if (val < 10) {
+	    /*
+	     * The prevcand() call will return 0 if there is no previous prime
+	     * such as the case when val < 2.
+	     */
+	    return prevcand(pal);
+	}
+
+	/*
+	 * compute the previous palindrome
+	 */
+	pal = palprevpal(pal);
+	dpal = digits(pal);
+
+	/* case: 11 is the only prime palindrome with even digit count */
+	if (pal == 11) {
+	    return 11;
+	}
+
+	/* case: 2 digit palindrome and not 11 */
+	if (dpal == 2) {
+	    return 7;
+	}
+
+	/* case: even number of digits */
+	if (iseven(dpal)) {
+
+	    /*
+	     * Except for 11 (which is handled above already), there are
+	     * no prime palindrome with even digits.  So we need to
+	     * decrease the digit count and work with that smaller palindrome.
+	     */
+	    pal = prevpal(10^(dpal-1));
+	}
+
+	/* case: palindrome is even or ends in 5 */
+	if (iseven(pal % 10) || (pal%10 == 10/2)) {
+
+	    /*
+	     * we need to decrease the bottom and top digits
+	     * so that we have a chance to be prime
+	     */
+	    pal -= (1 + 10^(dpal-1));
+	}
+	if (config("resource_debug") & 0x8) {
+	    print "DEBUG: prevprimepal:", pal;
+	}
+    } while (ptest(pal) == 0 && pal > 0);
+
+    /* return palindrome that his (highly probable) prime or 0 */
+    return pal;
+}

cal/pell.cal

@@ -1,7 +1,7 @@
 /*
  * pell - solve Pell's equation
  *
- * Copyright (C) 1999  David I. Bell
+ * Copyright (C) 1999,2021  David I. Bell
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: pell.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/pell.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:34
  * File existed as early as:	before 1990
  *
@@ -29,7 +25,7 @@
 
 /*
  * Solve Pell's equation; Returns the solution X to: X^2 - D * Y^2 = 1.
- * Type the solution to pells equation for a particular D.
+ * Type the solution to Pell's equation for a particular D.
  */
 
 

cal/pi.cal

@@ -1,7 +1,7 @@
 /*
  * pi - various routines to calculate pi
  *
- * Copyright (C) 1999-2004  David I. Bell
+ * Copyright (C) 1999-2004,2021  David I. Bell
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: pi.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/pi.cal,v $
- *
  * Under source code control:	1991/05/22 21:56:37
  * File existed as early as:	1991
  *
@@ -78,7 +74,7 @@ define qpi(epsilon)
 /*
  * Print digits of PI forever, neatly formatted, using calc.
  *
- * Written by Klaus Alexander Seistrup <klaus@seistrup.dk>
+ * Written by Klaus Alexander Seistrup <klaus at seistrup dot dk>
  * on a dull Friday evening in November 1999.
  *
  * Inspired by an algorithm conceived by Lambert Meertens.

cal/pix.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: pix.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/pix.cal,v $
- *
  * Under source code control:	1996/07/09 03:14:14
  * File existed as early as:	1996
  *

cal/pollard.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: pollard.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/pollard.cal,v $
- *
  * Under source code control:	1991/05/22 21:56:37
  * File existed as early as:	1991
  *

cal/poly.cal

@@ -1,7 +1,7 @@
 /*
  * poly - calculate with polynomials of one variable
  *
- * Copyright (C) 1999  Ernest Bowen
+ * Copyright (C) 1999,2021  Ernest Bowen
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: poly.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/poly.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:35
  * File existed as early as:	before 1990
  *
@@ -39,7 +35,7 @@
  *	variable has only one name.  For some purposes, a name like
  *	"sin(t)" or "(a + b)" or "\lambda" might be useful;
  *	names like "*" or "-27" are legal but might give expressions
- *	that are difficult to intepret.
+ *	that are difficult to interpret.
  *
  * Polynomial expressions may be constructed from numbers and the
  *	independent variable and other polynomials by the algebraic
@@ -47,7 +43,7 @@
  *	The operations // and % are defined to have the quotient and
  *	remainder meanings as usually defined for polynomials.
  *
- * When polynomials are assigned to idenfifiers, it is convenient to
+ * When polynomials are assigned to identifiers, it is convenient to
  *	think of the polynomials as values.  For example, p = (x - 1)^2
  *	assigns to p a polynomial value in the same way as q = (7 - 1)^2
  *	would assign to q a number value.  As with number expressions

cal/prompt.cal

@@ -1,7 +1,7 @@
 /*
- * prompt - eemonstration of some uses of prompt() and eval()
+ * prompt - demonstration of some uses of prompt() and eval()
  *
- * Copyright (C) 1999  Ernest Bowen
+ * Copyright (C) 1999,2021  Ernest Bowen
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: prompt.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/prompt.cal,v $
- *
  * Under source code control:	1995/12/18 04:43:25
  * File existed as early as:	1995
  *
@@ -65,9 +61,9 @@
  * nothing to sum.  The last line returns the value 3, i.e. the last
  * non-null value found for the expressions separated by semicolons,
  * so sum will be increased by 3 after the "print sum^2;" command
- * is executed.	 xxx The terminating semicolon is essential in the
+ * is executed.	 XXX The terminating semicolon is essential in the
  * last two lines.  A command like eval("print 7;") is acceptable to
- * calc but eval("print 7") causes an exit from calc. xxx)
+ * calc but eval("print 7") causes an exit from calc. XXX)
  *
  * If the value returned is not a number (e.g. the name of a list or matrix,
  * or if the string has syntax errors as in "2 + ", in which case the
@@ -79,7 +75,7 @@
  *	"sin(x)", "x^2 + 3*x", "exp(x, 1e-5)".
  *
  * Values of the function so defined are returned for values of x
- * entered in reponse to the ? prompt.	Operation is terminated by
+ * entered in response to the ? prompt.	Operation is terminated by
  * entering "end", "exit" or "quit".
  */
 

cal/psqrt.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: psqrt.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/psqrt.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:35
  * File existed as early as:	before 1990
  *

cal/qtime.cal

@@ -1,9 +1,9 @@
 /*
  * qtime - Display time as English sentence
  *
- * Copyright (C) 1999  Klaus Alexander Seistrup and Landon Curt Noll
+ * Copyright (C) 1999,2021  Klaus Alexander Seistrup and Landon Curt Noll
  *
- * Written by: Klaus Alexander Seistrup <kseis@magnetic-ink.dk>
+ * Written by: Klaus Alexander Seistrup <kseis at magnetic-ink dot dk>
  * With mods by: Landon Curt Noll <http://www.isthe.com/chongo/>
  *
  * Calc is open software; you can redistribute it and/or modify it under
@@ -20,10 +20,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: qtime.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/qtime.cal,v $
- *
  * Under source code control:	1999/10/13 04:10:33
  * File existed as early as:	1999
  *

cal/quat.cal

@@ -1,7 +1,7 @@
 /*
- * quat - alculate using quaternions of the form: a + bi + cj + dk
+ * quat - calculate using quaternions of the form: a + bi + cj + dk
  *
- * Copyright (C) 1999  David I. Bell
+ * Copyright (C) 1999,2021  David I. Bell
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: quat.cal,v 30.2 2013/08/11 08:41:38 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/quat.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:35
  * File existed as early as:	before 1990
  *

cal/randbitrun.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: randbitrun.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/randbitrun.cal,v $
- *
  * Under source code control:	1995/02/13 03:43:11
  * File existed as early as:	1995
  *

cal/randmprime.cal

@@ -1,7 +1,7 @@
 /*
  * randmprime - generate a random prime of the form h*2^n-1
  *
- * Copyright (C) 1999  Landon Curt Noll
+ * Copyright (C) 1999,2021  Landon Curt Noll
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: randmprime.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/randmprime.cal,v $
- *
  * Under source code control:	1994/03/14 23:11:21
  * File existed as early as:	1994
  *
@@ -49,9 +45,9 @@ randmprime(bits, seed, dbg)
     local n;		/* n as in h*2^n-1 */
     local h;		/* h as in h*2^n-1 */
     local plush;	/* value added to h since the beginning */
-    local init;		/* initial cpu time */
-    local start;	/* cpu time before last test */
-    local stop;		/* cpu time afte last test */
+    local init;		/* initial CPU time */
+    local start;	/* CPU time before last test */
+    local stop;		/* CPU time after last test */
     local tmp;		/* just a tmp place holder value */
     local ret;		/* h*2^n-1 that is prime */
 

cal/randombitrun.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: randombitrun.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/randombitrun.cal,v $
- *
  * Under source code control:	1995/02/13 03:43:11
  * File existed as early as:	1995
  *

cal/randomrun.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: randomrun.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/randomrun.cal,v $
- *
  * Under source code control:	1997/02/19 03:35:59
  * File existed as early as:	1997
  *

cal/randrun.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: randrun.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/randrun.cal,v $
- *
  * Under source code control:	1995/02/12 20:00:06
  * File existed as early as:	1995
  *

cal/repeat.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: repeat.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/repeat.cal,v $
- *
  * Under source code control:	2003/01/05 00:00:01
  * File existed as early as:	2003
  *

cal/screen.cal

@@ -15,10 +15,6 @@
  * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR  IN
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: screen.cal,v 30.2 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/screen.cal,v $
- *
  * This file is not covered under version 2.1 of the GNU LGPL.
  *
  * Under source code control:	2006/03/08 05:54:09

cal/seedrandom.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: seedrandom.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/seedrandom.cal,v $
- *
  * Under source code control:	1996/01/01 08:21:00
  * File existed as early as:	1996
  *

cal/set8700.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: set8700.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/set8700.cal,v $
- *
  * Under source code control:	2006/05/20 14:10:11
  * File existed as early as:	2006
  *

cal/set8700.line

@@ -1,7 +1,7 @@
 ##
 ## set8700 - dotest line tests for the 8700 set of regress.cal
 ##
-## Copyright (C) 2006  Ernest Bowen and Landon Curt Noll
+## Copyright (C) 2006,2021  Ernest Bowen and Landon Curt Noll
 ##
 ## Calc is open software; you can redistribute it and/or modify it under
 ## the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
 ## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ##
-## @(#) $Revision: 30.1 $
-## @(#) $Id: set8700.line,v 30.1 2007/03/16 11:09:54 chongo Exp $
-## @(#) $Source: /usr/local/src/bin/calc/cal/RCS/set8700.line,v $
-##
 ## Under source code control:	2006/05/20 14:10:11
 ## File existed as early as:	2006
 ##
@@ -163,7 +159,7 @@ set8700_A = 42, protect(set8700_A,1024), set8700_B = set8700_A, protect(set8700_
 set8700_A = 6 * 7, protect(set8700_A) == 1024
 set8700_A == set8700_B
 
-## Testing matrix protectioon
+## Testing matrix protection
 set8700_A = mat [3] = {1, 2, list(3,4)}; 1
 protect(set8700_A, 65, 1), protect(set8700_A) == 1089
 protect(set8700_A[0]) == 65
@@ -265,7 +261,7 @@ protect(set8700_L[0]) == 0
 protect(set8700_L[1]) == 512		## protect(set8700_A) copied
 protect(set8700_L[1][1]) == 1024	## protect(set8700_A[1]) copied
 
-## Testing list with "intialization"
+## Testing list with "initialization"
 set8700_L = list(1,2,3), protect(set8700_L) == 0
 protect(set8700_L[0]) | protect(set8700_L[1]) | protect(set8700_L[2]) == 0	## All zero
 set8700_L = {1,set8700_A}, set8700_L[1] == set8700_A

cal/solve.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.3 $
- * @(#) $Id: solve.cal,v 30.3 2013/08/11 08:41:38 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/solve.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:37
  * File existed as early as:	before 1990
  *

cal/specialfunctions.cal

@@ -1,7 +1,7 @@
 /*
  * specialfunctions - special functions (e.g.: gamma, zeta, psi)
  *
- * Copyright (C) 2013 Christoph Zurnieden
+ * Copyright (C) 2013,2021 Christoph Zurnieden
  *
  * Calc is open software; you can redistribute it and/or modify
  * it under the terms of the version 2.1 of the GNU Lesser General Public
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.6 $
- * @(#) $Id: specialfunctions.cal,v 30.6 2013/09/01 17:48:27 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/specialfunctions.cal,v $
- *
  * Under source code control:	2013/08/11 01:31:28
  * File existed as early as:	2013
  */
@@ -446,8 +442,8 @@ define lngamma(z)
 			if (tmp2 < tmp) {
 			    return
 				newerror(strcat
-					 ("lngamma(1): something happend that ",
-					  "should not have happend"));
+					 ("lngamma(1): something happened ",
+					  "that shouldn't have happened"));
 			}
 		    }
 		}
@@ -523,8 +519,8 @@ define lngamma(z)
 			    if (tmp2 < tmp) {
 				return
 				    newerror(strcat
-					     ("lngamma(1): something happend ",
-					      "that should not have happend"));
+					     ("lngamma(1): something happened ",
+					      "that should not have happened"));
 			    }
 			}
 		    }
@@ -580,8 +576,8 @@ define lngamma(z)
 			    if (tmp2 < tmp) {
 				return
 				    newerror(strcat
-					     ("lngamma(1): something happend ",
-					      "that should not have happend"));
+					     ("lngamma(1): something happened ",
+					      "that should not have happened"));
 			    }
 			}
 		    }
@@ -1051,7 +1047,7 @@ define __CZ__ibeta_cf_var_dm(a, b, z, max)
 	}
     }
     if (m > max) {
-	return newerror("ibeta: continous fraction does not converge");
+	return newerror("ibeta: continuous fraction does not converge");
     }
     return f;
 }
@@ -1294,7 +1290,7 @@ define __CZ__erfinvapprox(x)
 	     - (2 / (pi() * a) + (ln(1 - x ^ 2)) / 2));
 }
 
-/* complementary inverse errror function, faster at about x < 1-.91
+/* complementary inverse error function, faster at about x < 1-.91
    Henry E. Fettis. "A stable algorithm for computing the inverse error function
    in the 'tail-end' region" Math. Comp., 28:585-587, 1974.
 */
@@ -1328,7 +1324,7 @@ define __CZ__fettiscf(y, n)
     return t / (1 + r);
 }
 
-/* inverse errror function, faster at about x<=.91*/
+/* inverse error function, faster at about x<=.91*/
 define __CZ__inverfbin(x)
 {
     local places approx flow fhigh eps high low mid fmid epsilon;
@@ -1374,7 +1370,7 @@ define erfinv(x)
 	x = -x;
 	flag = 1;
     }
-    /* No need for full pecision */
+    /* No need for full precision */
     eps = epsilon(1e-20);
     if (eps >= 1e-40) {
 	/* Winitzki, Sergei (6 February 2008). "A handy approximation for the

cal/statistics.cal

@@ -1,7 +1,7 @@
 /*
  * statistics - Some assorted statistics functions.
  *
- * Copyright (C) 2013 Christoph Zurnieden
+ * Copyright (C) 2013,2021 Christoph Zurnieden
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.4 $
- * @(#) $Id: statistics.cal,v 30.4 2013/08/18 20:01:53 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/statistics.cal,v $
- *
  * Under source code control:	2013/08/11 01:31:28
  * File existed as early as:	2013
  */
@@ -110,7 +106,7 @@ define invbetainc_slow(x,a,b){
     GW Cran, KJ Martin, GE Thomas,
     Remark AS R19 and Algorithm AS 109:
     A Remark on Algorithms AS 63: The Incomplete Beta Integral
-    and AS 64: Inverse of the Incomplete Beta Integeral,
+    and AS 64: Inverse of the Incomplete Beta integral,
     Applied Statistics,
     Volume 26, Number 1, 1977, pages 111-114.
 
@@ -375,7 +371,7 @@ define normalcdf(x,mu,sigma){
 
 define probit(p){
   if(p<0 || p > 1) return newerror("probit: p out of domain 0<=p<=1");
-  return sqrt(2)*ervinv(2*p-1);
+  return sqrt(2)*erfinv(2*p-1);
 }
 
 define normalcdfinv(p,mu,sigma){

cal/sumsq.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: sumsq.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/sumsq.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:37
  * File existed as early as:	before 1990
  *

cal/sumtimes.cal

@@ -1,7 +1,7 @@
 /*
- * sumtimes - runtimes evaluating sums & squares of large lists and mats
+ * sumtimes - runtime evaluating sums & squares of large lists and mats
  *
- * Copyright (C) 2006  Ernest Bowen
+ * Copyright (C) 2006,2021  Ernest Bowen
  *
  * Calc is open software; you can redistribute it and/or modify it under
  * the terms of the version 2.1 of the GNU Lesser General Public License
@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: sumtimes.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/sumtimes.cal,v $
- *
  * Under source code control:	2006/06/22 17:29
  * File existed as early as:	2006
  *
@@ -164,7 +160,7 @@ define timehmean(N, M = 10) {
     v2 = hmean(sumtimes_A);
     sumtimes_t2 = usertime();
     print v1, v2;
-    print "List harmonic meanruntimes";
+    print "List harmonic mean runtimes";
     printf('\tStandard "for" loop:\t\t%.4f\n', sumtimes_t1 - sumtimes_t0);
     printf('\tUsing builtin "hmean":\t\t%.4f\n', sumtimes_t2 - sumtimes_t1);
 }

cal/surd.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: surd.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/surd.cal,v $
- *
  * Under source code control:	1990/02/15 01:50:38
  * File existed as early as:	before 1990
  *

cal/test1700.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: test1700.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test1700.cal,v $
- *
  * Under source code control:	1994/03/14 23:12:51
  * File existed as early as:	1994
  *

cal/test2300.cal

@@ -17,10 +17,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: test2300.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test2300.cal,v $
- *
  * Under source code control:	1995/07/09 06:12:13
  * File existed as early as:	1995
  *

cal/test2600.cal

@@ -1,7 +1,7 @@
 /*
  * test2600 - 2600 series of the regress.cal test suite
  *
- * Copyright (C) 1999  Ernest Bowen and Landon Curt Noll
+ * Copyright (C) 1999,2021  Ernest Bowen and Landon Curt Noll
  *
  * Primary author:  Ernest Bowen
  *
@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.3 $
- * @(#) $Id: test2600.cal,v 30.3 2013/08/11 08:41:38 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test2600.cal,v $
- *
  * Under source code control:	1995/10/13 00:13:14
  * File existed as early as:	1995
  *
@@ -54,7 +50,7 @@
  * of b in power(a, b, eps) is large, the computation required for
  * a test may be very heavy.
  *
- * Test funcations are called as:
+ * Test functions are called as:
  *
  *	testabc(str, ..., verbose)
  *

cal/test2700.cal

@@ -1,7 +1,7 @@
 /*
  * test2700 - 2700 series of the regress.cal test suite
  *
- * Copyright (C) 1999  Ernest Bowen and Landon Curt Noll
+ * Copyright (C) 1999,2021  Ernest Bowen and Landon Curt Noll
  *
  * Primary author:  Ernest Bowen
  *
@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: test2700.cal,v 30.2 2013/08/11 08:41:38 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test2700.cal,v $
- *
  * Under source code control:	1995/11/01 22:52:25
  * File existed as early as:	1995
  *
@@ -88,7 +84,7 @@ define mkfrac() = rand(2) ? mkposfrac() : -mkposfrac();
 define mksquarereal() = mknonnegreal()^2;
 
 /*
- * We might be able to do better than the following.  For nonsquare
+ * We might be able to do better than the following.  For non-square
  * positive integer less than 1e6, could use:
  *		 x = rand(1, 1000);
  *		 return rand(x^2 + 1, (x + 1)^2);

cal/test3100.cal

@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: test3100.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test3100.cal,v $
- *
  * Under source code control:	1995/11/28 11:56:57
  * File existed as early as:	1995
  *

cal/test3300.cal

@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: test3300.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test3300.cal,v $
- *
  * Under source code control:	1995/12/02 04:27:41
  * File existed as early as:	1995
  *

cal/test3400.cal

@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: test3400.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test3400.cal,v $
- *
  * Under source code control:	1995/12/02 05:20:11
  * File existed as early as:	1995
  *

cal/test3500.cal

@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: test3500.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test3500.cal,v $
- *
  * Under source code control:	1995/12/18 22:50:46
  * File existed as early as:	1995
  *

cal/test4000.cal

@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.2 $
- * @(#) $Id: test4000.cal,v 30.2 2013/08/11 08:41:38 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test4000.cal,v $
- *
  * Under source code control:	1996/03/13 02:38:45
  * File existed as early as:	1996
  *

cal/test4100.cal

@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: test4100.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test4100.cal,v $
- *
  * Under source code control:	1996/03/13 03:53:22
  * File existed as early as:	1996
  *

cal/test4600.cal

@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: test4600.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test4600.cal,v $
- *
  * Under source code control:	1996/07/02 20:04:40
  * File existed as early as:	1996
  *

cal/test5100.cal

@@ -1,7 +1,7 @@
 /*
  * test5100 - 5100 series of the regress.cal test suite
  *
- * Copyright (C) 1999  Ernest Bowen and Landon Curt Noll
+ * Copyright (C) 1999,2021  Ernest Bowen and Landon Curt Noll
  *
  * Primary author:  Ernest Bowen
  *
@@ -19,10 +19,6 @@
  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
- * @(#) $Revision: 30.1 $
- * @(#) $Id: test5100.cal,v 30.1 2007/03/16 11:09:54 chongo Exp $
- * @(#) $Source: /usr/local/src/bin/calc/cal/RCS/test5100.cal,v $
- *
  * Under source code control:	1996/12/02 23:57:10
  * File existed as early as:	1996
  *
@@ -39,7 +35,7 @@ defaultverbose = 1;	/* default verbose value */
  * with zero value, when the definition is read.
  *
  * The variable a5100 is initialized with the value x if and when this
- * function is first called with a positive even x. The varable b5100
+ * function is first called with a positive even x. The variable b5100
  * is similarly initialized if and when this function is first called positive
  * odd x.
  *