mirror of
https://github.com/lcn2/calc.git
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ac0d84eef8
Added notes to help/unexpected about:
display() will limit the number of digits printed after decimal point
%d will format after the decimal point for non-integer numeric values
%x will format as fractions for non-integer numeric values
fprintf(fd, "%d\n", huge_value) may need fflush(fd) to finish
Fixed Makefile dependencies for the args.h rule.
Fixed Makefile cases where echo with -n is used. On some systems,
/bin/sh does not use -n, so we must call /bin/echo -n instead
via the ${ECHON} Makefile variable.
Add missing standard tools to sub-Makefiles to make them
easier to invoke directly.
Sort lists of standard tool Makefile variables and remove duplicates.
Declare the SHELL at the top of Makefiles.
Fixed the depend rule in the custom Makefile.
Improved the messages produced by the depend in the Makefiles.
Changed the UNUSED define in have_unused.h to be a macro with
a parameter. Changed all use of UNUSED in *.c to be UNUSED(x).
Removed need for HAVE_UNUSED in building the have_unused.h file.
CCBAN is given to ${CC} in order to control if banned.h is in effect.
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.
Added the building of have_ban_pragma.h, which will determine
if "#pragma GCC poison func_name" is supported. If it is not,
or of HAVE_PRAGMA_GCC_POSION=-DHAVE_NO_PRAGMA_GCC_POSION, then
banned.h will have no effect.
Fixed building of the have_getpgid.h file.
Fixed building of the have_getprid.h file.
Fixed building of the have_getsid.h file.
Fixed building of the have_gettime.h file.
Fixed building of the have_strdup.h file.
Fixed building of the have_ustat.h file.
Fixed building of the have_rusage.h file.
Added HAVE_NO_STRLCPY to control if we want to test if
the system has a strlcpy() function. This in turn produces
the have_strlcpy.h file wherein the symbol HAVE_STRLCPY will
be defined, or not depending if the system comes with a
strlcpy() function.
If the system does not have a strlcpy() function, we
compile our own strlcpy() function. See strl.c for details.
Added HAVE_NO_STRLCAT to control if we want to test if
the system has a strlcat() function. This in turn produces
the have_strlcat.h file wherein the symbol HAVE_STRLCAT will
be defined, or not depending if the system comes with a
strlcat() function.
If the system does not have a strlcat() function, we
compile our own strlcat() function. See strl.c for details.
Fixed places were <string.h>, using #ifdef HAVE_STRING_H
for legacy systems that do not have that include file.
Added ${H} Makefile symbol to control the announcement
of forming and having formed hsrc related files. By default
H=@ (announce hsrc file formation) vs. H=@: to silence hsrc
related file formation.
Explicitly turn off quiet mode (set Makefile variable ${Q} to
be empty) when building rpms.
Improved and fixed the hsrc build process.
Forming rpms is performed in verbose mode to assist debugging
to the rpm build process.
Compile custom code, if needed, after main code is compiled.
129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
/*
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* custtbl - custom interface table
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*
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* Copyright (C) 1999-2007,2021 Landon Curt Noll
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*
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* Calc is open software; you can redistribute it and/or modify it under
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* the terms of the version 2.1 of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* Calc is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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* Public License for more details.
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*
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* A copy of version 2.1 of the GNU Lesser General Public License is
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* distributed with calc under the filename COPYING-LGPL. You should have
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* received a copy with calc; if not, write to Free Software Foundation, Inc.
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Under source code control: 1997/03/09 02:28:54
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* File existed as early as: 1997
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*
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* chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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*/
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#include <unistd.h>
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#include "have_const.h"
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#include "value.h"
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#include "custom.h"
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#include "banned.h" /* include after system header <> includes */
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/*
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* NOTE: See the file CUSTOM for instructions on how to add
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* custom functions.
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*/
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#if defined(CUSTOM)
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/*
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* add your forward custom function declarations here
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*
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* Declare custom functions as follows:
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*
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* E_FUNC VALUE c_xyz(char*, int, VALUE**);
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*
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* We suggest that you sort the entries below by name.
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*/
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E_FUNC VALUE c_argv(char*, int, VALUE**);
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E_FUNC VALUE c_devnull(char*, int, VALUE**);
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E_FUNC VALUE c_help(char*, int, VALUE**);
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E_FUNC VALUE c_sysinfo(char*, int, VALUE**);
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E_FUNC VALUE c_pzasusb8(char*, int, VALUE**);
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E_FUNC VALUE c_pmodm127(char*, int, VALUE**);
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E_FUNC VALUE c_register(char*, int, VALUE**);
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#endif /* CUSTOM */
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/*
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* custom interface table
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*
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* The order of the elements in struct custom are:
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*
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* { "xyz", "brief description of the xyz custom function",
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* minimum_args, maximum_args, c_xyz },
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*
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* where:
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*
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* minimum_args an int >= 0
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* maximum_args an int >= minimum_args and <= MAX_CUSTOM_ARGS
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*
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* Use MAX_CUSTOM_ARGS for maximum_args is the maximum number of args
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* is potentially 'unlimited'.
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*
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* If the brief description cannot fit on the same line as the name
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* without wrapping on a 80 col window, the description is probably
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* too long and will not look nice in the show custom output.
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*/
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CONST struct custom cust[] = {
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#if defined(CUSTOM)
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/*
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* add your own custom functions here
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*
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* We suggest that you sort the entries below by name
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* so that show custom will produce a nice sorted list.
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*/
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{ "argv", "information about its args, returns arg count",
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0, MAX_CUSTOM_ARGS, c_argv },
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{ "devnull", "does nothing",
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0, MAX_CUSTOM_ARGS, c_devnull },
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{ "help", "help for custom functions",
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1, 1, c_help },
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{ "sysinfo", "return a calc #define value",
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0, 1, c_sysinfo },
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{ "pzasusb8", "print ZVALUE as USB8",
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0, 1, c_pzasusb8 },
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{ "pmodm127", "calculate q mod 2^(2^127-1)",
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1, 1, c_pmodm127 },
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{ "register", "get or set customer registers",
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1, 2, c_register },
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#endif /* CUSTOM */
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/*
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* This must be at the end of this table!!!
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*/
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{NULL, NULL,
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0, 0, NULL}
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};
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