Release calc version 2.11.0t7.3

BUGS

@@ -77,15 +77,3 @@ Known problems or mis-features:
     * There is some places in the source with obscure variable names
       and not much in the way of comments.  We need some major cleanup
       and documentation.
-
-    * On a Dec Alpha, using the Dec Alpha cc (not gcc) make check for
-      version 2.11.0t5.1 fails in the regression test:
-
-	From vandermj@molbio.sbphrd.com  Tue Oct  5 04:06:52 1999
-	Subject: Re: oops, try calc version 2.10.0t5.1
-	Date: Tue, 05 Oct 1999 07:06:30 -0400
-
-	Regular cc on Dec alpha, 'make check' dies with:
-
-	1804: surd_value(a) == 2+3i
-	"": line 1706: Calling qfreenum with nozero links!!!

CHANGES

@@ -1,4 +1,142 @@
-Following is the change from calc version 2.11.0t1 to date:
+Following is the change from calc version 2.11.0t7 to date:
+
+    Calc has some new command line flags / command line meaning:
+    (Thanks goes to Ernest Bowen <ernie@turing.une.edu.au>)
+
+	-i 	Go into interactive mode if possible.
+
+	-c	Continue reading command lines even after an execution
+		error has caused the abandonment of a line
+
+	To understand the -i and -c effects, consider the following
+	file (call it myfile.cal) which has deliberate errors in it:
+
+	    print 1;
+	    mat A[1] = {2,3};
+	    print 2;
+	    epsilon(-1);
+	    print 3;
+
+	calc read myfile
+
+	    Reports an error on the 2nd line and exits; prints 1 only.
+
+	calc -c read myfile
+
+	    Report errors on the 2nd and 4th lines and exits; prints 1,2 and 3.
+
+	calc -i read myfile
+
+	    Report errors on the 2nd and gives you a prompt; prints 1 only.
+
+	calc -i -c read myfile
+
+	    Report errors on the 2nd and 4th and gives you a prompt;
+	    prints 1, 2 and 3.
+
+	cat myfile | calc
+
+	    Reports an error on the 2nd line and exits; prints 1 only.
+
+	cat myfile | calc -c
+
+	    Report errors on the 2nd and 4th lines and exits; prints 1,2 and 3.
+
+	Note that continuation refers to command lines, not to statements.  So:
+
+	    calc -c 'print "start"; mat A[1] = {2,3}; print "end";'
+
+	since it contains no newline, the whole string is compiled,
+	but execution is abandoned when the error is encountered and
+	the string ``end'' is not printed.
+
+	You can use your shell to supply newlines in your command line
+	arguments.  For example in sh, ksh, bash:
+
+	    calc -c 'print "start";
+	    mat A[1] = {2,3};
+	    print "end";'
+
+	will print both ``start'' and ``end''.  C-shell users can do:
+
+	    calc -c 'print "start"; \
+	    mat A[1] = {2,3}; \
+	    print "end";'
+
+	however sh, ksh, bash will not see ``end'' printed because their
+	shell will remove the internal newlines.
+
+    Added display(n) builtin which does almost the same as config("display",n)
+    except that rather than causing an execution with an out-of-range or
+    bad-type argument type, it simply writes a message to stderr.  This
+    also now happens to the errmax() builtin.
+
+    Added qtime.cal to the standard calc library.
+
+    Added another command line flag to calc:
+
+	-d 	Disable display of the opening title and config("lib_debug",0)
+
+	The command:
+
+	    calc 'read qtime; qtime(2)'
+
+	will output something like:
+
+	    qtime(utc_hr_offset) defined
+	    It's nearly ten past six.
+
+	whereas:
+
+	    calc -d 'read qtime; qtime(2)'
+
+	will just say:
+
+	    It's nearly ten past six.
+
+    A call of errmax(-1) will prevent errcount from aborting calc.
+
+    Add the function stoponerror(n) which, as the name implies, controls
+    if calc stop on an error based on the value of n:
+
+	n > 0	stop on error even if -c was given on the command line
+	n == 0	if -c, continue, without -c, stop
+	n < 0	continue on error, even if -c was given on the command line
+
+    Calc compilation now stops at the first scanerror.
+
+    Restored the feature where -p disables the printing of leading tabs
+    as of config("tab",0) had been executed.  So using calc in a pipe:
+
+	calc -p 2+17 | whey
+
+     will write '19' instead of '\t17' to the whey command.
+
+     Updated calc man page and help/usage file to reflect recent
+     command line changes.
+
+     Converted start_done into a general calc run state enum called
+     run_state within the calc source.
+
+     Removed README.OLD.
+
+     Added the Makefile variable ${LCC} to invoke the local c compiler.
+     By default, ${CC} also run the ${LCC} compiler.  The distinction is
+     useful when using something such as purify.  In the case of ${LCC},
+     only the local C compiler is invoked.  In the case of ${CC} a purify
+     compile is invoked.  Only the source that must be compiled and run
+     on the local machine use ${LCC}; everything else uses ${CC}.
+
+     Fixed memory buffer ovreread problem in eatstring() in token.c.
+
+     Fixed memory leaks related to putenv().
+
+     Fixed memory leaks realted to srandom().
+
+     Misc calc man page fixes.
+
+
+Following is the change from calc version 2.11.0t1 to 2.11.0t6.3:
 
     Removed the makefile symbol MAIN.  Now forcing all functions to correctly
     be declared main.  To satisfy some old broken compilers, a return 0;
@@ -35,8 +173,9 @@ Following is the change from calc version 2.11.0t1 to date:
 
     Reordered cc Makefile variable sets in the main Makefile.
 
-    Fixed a bug and applied a fix that was reported by Ernest Bowen
-    <ernie@turing.une.edu.au>.  Added regression tests 1103 to 1112.
+    Fixed a bug in hnrmod() and applied a fix that was reported by Ernest
+    Bowen <ernie@turing.une.edu.au>.  Added regression tests 1103 to
+    1112 to confirm the fix.
 
     Fixed a bug in version.c related to MINOR_PATCHs in both the
     empty and non-empty MINOR_PATCH cases.
@@ -174,6 +313,18 @@ Following is the change from calc version 2.11.0t1 to date:
     to correctly hash a V_STR value-type that has an \0 byte
     inside it.
 
+    A patch from Ernest Bowen <ernie@turing.une.edu.au> now defines
+    special meaning to the first 2 bits of config("lib_debug"):
+
+	bit 0 set => messages printed when inputisterminal
+	bit 1 set => messages printed when reading from a file
+
+    The lib/regress.cal regression suite does:
+
+	config("lib_debug", -4);
+
+    to eliminate lib messages (both bit 0 and bit 1 are not set).
+
     Fixed misc compile warnings and notices.
 
 

HOWTO.INSTALL

@@ -50,3 +50,6 @@ Installing calc in 4 easy steps:
     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.

Makefile

@@ -352,7 +352,7 @@ CALCPAGER= more
 #CALCPAGER= cat
 #CALCPAGER= less
 
-# Debug/Optimize options for ${CC}
+# Debug/Optimize options for ${CC} and ${LCC}
 #
 #DEBUG= -O
 #DEBUG= -O -g
@@ -393,7 +393,7 @@ NO_SHARED=
 #NO_SHARED= -non_shared
 
 # On some systems where you are disabling dynamic shared libs, you may
-# need to pass a special flag to ${CC} during linking stage.
+# need to pass a special flag to ${CC} and ${LCC} during linking stage.
 #
 #    System type    			    NO_SHARED recommendation
 #
@@ -522,7 +522,8 @@ ALLOW_CUSTOM= -DCUSTOM
 # LDFLAGS are flags given to ${CC} for linking .o files
 # ILDFLAGS are flags given to ${CC} for linking .o files for intermediate progs
 #
-# CC is how the the C compiler is invoked
+# LCC how the the C compiler is invoked on locally executed intermediate progs
+# CC is how the the C compiler is invoked (with an optional Purify)
 #
 ###
 #
@@ -546,7 +547,8 @@ LCFLAGS=
 LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
 ILDFLAGS=
 #
-CC= ${PURIFY} gcc
+LCC= gcc
+CC= ${PURIFY} ${LCC}
 #
 ###
 #
@@ -568,8 +570,9 @@ CC= ${PURIFY} gcc
 #LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
 #ILDFLAGS=
 #
-#CC= ${PURIFY} gcc
-#CC= ${PURIFY} gcc2
+#LCC= gcc
+#LCC= gcc2
+#CC= ${PURIFY} ${LCC}
 #
 ###
 #
@@ -588,7 +591,8 @@ CC= ${PURIFY} gcc
 #LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
 #ILDFLAGS=
 #
-#CC= ${PURIFY} cc
+#LCC= cc
+#CC= ${PURIFY} ${LCC}
 #
 ###
 #
@@ -619,7 +623,8 @@ CC= ${PURIFY} gcc
 #LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
 #ILDFLAGS=
 #
-#CC= ${PURIFY} cc -n32 -xansi
+#LCC= cc -n32 -xansi
+#CC= ${PURIFY} ${LCC}
 #
 ###
 #
@@ -644,7 +649,8 @@ CC= ${PURIFY} gcc
 #LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
 #ILDFLAGS=
 #
-#CC= ${PURIFY} cc
+#LCC= cc
+#CC= ${PURIFY} ${LCC}
 #
 ###
 #
@@ -663,7 +669,8 @@ CC= ${PURIFY} gcc
 #LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
 #ILDFLAGS=
 #
-#CC= ${PURIFY} cc
+#LCC= cc
+#CC= ${PURIFY} ${LCC}
 #
 ###
 #
@@ -688,7 +695,8 @@ CC= ${PURIFY} gcc
 #LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
 #ILDFLAGS=
 #
-#CC= ${PURIFY} cc
+#LCC= cc
+#CC= ${PURIFY} ${LCC}
 #
 ###
 #
@@ -710,7 +718,8 @@ CC= ${PURIFY} gcc
 #LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
 #ILDFLAGS=
 #
-#CC= ${PURIFY} gcc
+#LCC= gcc
+#CC= ${PURIFY} ${LCC}
 #
 ###
 #
@@ -732,7 +741,8 @@ CC= ${PURIFY} gcc
 #LDFLAGS= ${NO_SHARED} ${LD_NO_SHARED}
 #ILDFLAGS=
 #
-#CC= ${PURIFY} cc
+#LCC= cc
+#CC= ${PURIFY} ${LCC}
 
 ##############################################################################
 #-=-=-=-=-=-=-=-=- Be careful if you change something below -=-=-=-=-=-=-=-=-#
@@ -887,6 +897,7 @@ CUSTOM_PASSDOWN= Q="${Q}" \
     LCFLAGS="${LCFLAGS}" \
     LDFLAGS="${LDFLAGS}" \
     ILDFLAGS="${ILDFLAGS}" \
+    LCC="${LCC}" \
     CC="${CC}" \
     MAKE_FILE=${MAKE_FILE} \
     SED=${SED} \
@@ -914,6 +925,7 @@ SAMPLE_PASSDOWN= Q="${Q}" \
     LDFLAGS="${LDFLAGS}" \
     ILDFLAGS="${ILDFLAGS}" \
     CALC_LIBS="../libcalc.a ../custom/libcustcalc.a" \
+    LCC="${LCC}" \
     CC="${CC}" \
     MAKE_FILE=${MAKE_FILE} \
     SED=${SED} \
@@ -931,7 +943,7 @@ C_SRC= ${LIBSRC} ${CALCSRC} ${UTIL_C_SRC}
 # These files are found (but not built) in the distribution
 #
 DISTLIST= ${C_SRC} ${H_SRC} ${MAKE_FILE} BUGS CHANGES LIBRARY README \
-	calc.man lint.sed README.OLD HOWTO.INSTALL ${UTIL_MISC_SRC}
+	calc.man lint.sed HOWTO.INSTALL ${UTIL_MISC_SRC}
 
 # complete list of .o files
 #
@@ -1379,8 +1391,8 @@ longlong.h: longlong.c have_stdlib.h have_string.h ${MAKE_FILE}
 	${Q}echo '' >> longlong.h
 	${Q}echo '/* do we have/want to use a long long type? */' >> longlong.h
 	-${Q}rm -f longlong.o longlong
-	-${Q}${CC} ${CCMAIN} longlong.c -c 2>/dev/null; true
-	-${Q}${CC} ${ILDFLAGS} longlong.o -o longlong 2>/dev/null; true
+	-${Q}${LCC} ${CCMAIN} longlong.c -c 2>/dev/null; true
+	-${Q}${LCC} ${ILDFLAGS} longlong.o -o longlong 2>/dev/null; true
 	-${Q}${SHELL} -c "./longlong ${LONGLONG_BITS} > ll_tmp 2>/dev/null" \
 	    >/dev/null 2>&1; true
 	-${Q}if [ -s ll_tmp ]; then \
@@ -1418,8 +1430,8 @@ have_fpos.h: have_fpos.c ${MAKE_FILE}
 	${Q}echo '' >> have_fpos.h
 	${Q}echo '/* do we have fgetpos & fsetpos functions? */' >> have_fpos.h
 	-${Q}rm -f have_fpos.o have_fpos
-	-${Q}${CC} ${HAVE_FPOS} ${CCMAIN} have_fpos.c -c 2>/dev/null; true
-	-${Q}${CC} ${ILDFLAGS} have_fpos.o -o have_fpos 2>/dev/null; true
+	-${Q}${LCC} ${HAVE_FPOS} ${CCMAIN} have_fpos.c -c 2>/dev/null; true
+	-${Q}${LCC} ${ILDFLAGS} have_fpos.o -o have_fpos 2>/dev/null; true
 	-${Q}${SHELL} -c "./have_fpos > fpos_tmp 2>/dev/null" \
 	    >/dev/null 2>&1; true
 	-${Q}if [ -s fpos_tmp ]; then \
@@ -1459,8 +1471,8 @@ fposval.h: fposval.c have_fpos.h have_offscl.h have_posscl.h \
 	${Q}echo '' >> fposval.h
 	${Q}echo '/* what are our file position & size types? */' >> fposval.h
 	-${Q}rm -f fposval.o fposval
-	-${Q}${CC} ${CCMAIN} fposval.c -c 2>/dev/null; true
-	-${Q}${CC} ${ILDFLAGS} fposval.o -o fposval 2>/dev/null; true
+	-${Q}${LCC} ${CCMAIN} fposval.c -c 2>/dev/null; true
+	-${Q}${LCC} ${ILDFLAGS} fposval.o -o fposval 2>/dev/null; true
 	${Q}${SHELL} -c "./fposval fposv_tmp >> fposval.h 2>/dev/null" \
 	    >/dev/null 2>&1; true
 	${Q}echo '' >> fposval.h
@@ -1492,8 +1504,8 @@ have_const.h: have_const.c ${MAKE_FILE}
 	${Q}echo '' >> have_const.h
 	${Q}echo '/* do we have or want const? */' >> have_const.h
 	-${Q}rm -f have_const.o have_const
-	-${Q}${CC} ${CCMAIN} ${HAVE_CONST} have_const.c -c 2>/dev/null; true
-	-${Q}${CC} ${ILDFLAGS} have_const.o -o have_const 2>/dev/null; true
+	-${Q}${LCC} ${CCMAIN} ${HAVE_CONST} have_const.c -c 2>/dev/null; true
+	-${Q}${LCC} ${ILDFLAGS} have_const.o -o have_const 2>/dev/null; true
 	-${Q}${SHELL} -c "./have_const > const_tmp 2>/dev/null" \
 	    >/dev/null 2>&1; true
 	-${Q}if [ -s const_tmp ]; then \
@@ -1531,8 +1543,8 @@ have_offscl.h: have_offscl.c ${MAKE_FILE}
 	${Q}echo '' >> have_offscl.h
 	${Q}echo '' >> have_offscl.h
 	-${Q}rm -f have_offscl.o have_offscl
-	-${Q}${CC} ${CCMAIN} ${HAVE_OFFSCL} have_offscl.c -c 2>/dev/null; true
-	-${Q}${CC} ${ILDFLAGS} have_offscl.o -o have_offscl 2>/dev/null; true
+	-${Q}${LCC} ${CCMAIN} ${HAVE_OFFSCL} have_offscl.c -c 2>/dev/null; true
+	-${Q}${LCC} ${ILDFLAGS} have_offscl.o -o have_offscl 2>/dev/null; true
 	-${Q}${SHELL} -c "./have_offscl > offscl_tmp 2>/dev/null" \
 	    >/dev/null 2>&1; true
 	-${Q}if [ -s offscl_tmp ]; then \
@@ -1569,8 +1581,8 @@ have_posscl.h: have_posscl.c have_fpos.h ${MAKE_FILE}
 	${Q}echo '' >> have_posscl.h
 	${Q}echo '' >> have_posscl.h
 	-${Q}rm -f have_posscl.o have_posscl
-	-${Q}${CC} ${CCMAIN} ${HAVE_POSSCL} have_posscl.c -c 2>/dev/null; true
-	-${Q}${CC} ${ILDFLAGS} have_posscl.o -o have_posscl 2>/dev/null; true
+	-${Q}${LCC} ${CCMAIN} ${HAVE_POSSCL} have_posscl.c -c 2>/dev/null; true
+	-${Q}${LCC} ${ILDFLAGS} have_posscl.o -o have_posscl 2>/dev/null; true
 	-${Q}${SHELL} -c "./have_posscl > posscl_tmp 2>/dev/null" \
 	    >/dev/null 2>&1; true
 	-${Q}if [ -s posscl_tmp ]; then \
@@ -1621,8 +1633,8 @@ align32.h: align32.c longbits.h have_unistd.h ${MAKE_FILE}
 	fi
 	-${Q}if [ X = X${ALIGN32} ]; then \
 	    rm -f align32.o align32; \
-	    ${CC} ${CCMAIN} ${ALIGN32} align32.c -c 2>/dev/null; \
-	    ${CC} ${ILDFLAGS} align32.o -o align32 2>/dev/null; \
+	    ${LCC} ${CCMAIN} ${ALIGN32} align32.c -c 2>/dev/null; \
+	    ${LCC} ${ILDFLAGS} align32.o -o align32 2>/dev/null; \
 	    ${SHELL} -c "./align32 >align32_tmp 2>/dev/null" >/dev/null 2>&1; \
 	    if [ -s align32_tmp ]; then \
 		cat align32_tmp >> align32.h; \
@@ -1662,8 +1674,8 @@ have_uid_t.h: have_uid_t.c have_unistd.h ${MAKE_FILE}
 	${Q}echo '' >> have_uid_t.h
 	${Q}echo '/* do we have or want uid_t? */' >> have_uid_t.h
 	-${Q}rm -f have_uid_t.o have_uid_t
-	-${Q}${CC} ${CCMAIN} ${HAVE_UID_T} have_uid_t.c -c 2>/dev/null; true
-	-${Q}${CC} ${ILDFLAGS} have_uid_t.o -o have_uid_t 2>/dev/null; true
+	-${Q}${LCC} ${CCMAIN} ${HAVE_UID_T} have_uid_t.c -c 2>/dev/null; true
+	-${Q}${LCC} ${ILDFLAGS} have_uid_t.o -o have_uid_t 2>/dev/null; true
 	-${Q}${SHELL} -c "./have_uid_t > uid_tmp 2>/dev/null" \
 	    >/dev/null 2>&1; true
 	-${Q}if [ -s uid_tmp ]; then \
@@ -1701,8 +1713,8 @@ have_newstr.h: have_newstr.c ${MAKE_FILE}
 	${Q}echo '/* do we have or want memcpy(), memset() & strchr()? */' \
 							>> have_newstr.h
 	-${Q}rm -f have_newstr.o have_newstr
-	-${Q}${CC} ${CCMAIN} ${HAVE_NEWSTR} have_newstr.c -c 2>/dev/null; true
-	-${Q}${CC} ${ILDFLAGS} have_newstr.o -o have_newstr 2>/dev/null; true
+	-${Q}${LCC} ${CCMAIN} ${HAVE_NEWSTR} have_newstr.c -c 2>/dev/null; true
+	-${Q}${LCC} ${ILDFLAGS} have_newstr.o -o have_newstr 2>/dev/null; true
 	-${Q}${SHELL} -c "./have_newstr > newstr_tmp 2>/dev/null" \
 	    >/dev/null 2>&1; true
 	-${Q}if [ -s newstr_tmp ]; then \
@@ -1739,8 +1751,8 @@ have_memmv.h: have_memmv.c ${MAKE_FILE}
 	${Q}echo '' >> have_memmv.h
 	${Q}echo '/* do we have or want memmove()? */' >> have_memmv.h
 	-${Q}rm -f have_memmv.o have_memmv
-	-${Q}${CC} ${CCMAIN} ${HAVE_MEMMOVE} have_memmv.c -c 2>/dev/null; true
-	-${Q}${CC} ${ILDFLAGS} have_memmv.o -o have_memmv 2>/dev/null; true
+	-${Q}${LCC} ${CCMAIN} ${HAVE_MEMMOVE} have_memmv.c -c 2>/dev/null; true
+	-${Q}${LCC} ${ILDFLAGS} have_memmv.o -o have_memmv 2>/dev/null; true
 	-${Q}${SHELL} -c "./have_memmv > newstr_tmp 2>/dev/null" \
 	    >/dev/null 2>&1; true
 	-${Q}if [ -s newstr_tmp ]; then \
@@ -1776,8 +1788,8 @@ args.h: have_stdvs.c have_varvs.c have_string.h have_unistd.h have_string.h
 	${Q}echo '' >> args.h
 	${Q}echo '' >> args.h
 	-${Q}rm -f have_stdvs.o have_stdvs
-	-${Q}${CC} ${CCMAIN} ${HAVE_VSPRINTF} have_stdvs.c -c 2>/dev/null; true
-	-${Q}${CC} ${ILDFLAGS} have_stdvs.o -o have_stdvs 2>/dev/null; true
+	-${Q}${LCC} ${CCMAIN} ${HAVE_VSPRINTF} have_stdvs.c -c 2>/dev/null; true
+	-${Q}${LCC} ${ILDFLAGS} have_stdvs.o -o have_stdvs 2>/dev/null; true
 	-${Q}if ./have_stdvs >>args.h 2>/dev/null; then \
 	    touch have_args; \
 	else \
@@ -1785,8 +1797,8 @@ args.h: have_stdvs.c have_varvs.c have_string.h have_unistd.h have_string.h
 	fi
 	-${Q}if [ ! -f have_args ] && [ X"${HAVE_VSPRINTF}" = X ]; then \
 	    rm -f have_stdvs.o have_stdvs have_varvs.o have_varvs; \
-	    ${CC} ${CCMAIN} -DDONT_HAVE_VSPRINTF have_varvs.c -c 2>/dev/null; \
-	    ${CC} ${ILDFLAGS} have_varvs.o -o have_varvs 2>/dev/null; \
+	    ${LCC} ${CCMAIN} -DDONT_HAVE_VSPRINTF have_varvs.c -c 2>/dev/null; \
+	    ${LCC} ${ILDFLAGS} have_varvs.o -o have_varvs 2>/dev/null; \
 	    if ./have_varvs >>args.h 2>/dev/null; then \
 		touch have_args; \
 	    else \
@@ -1865,17 +1877,17 @@ calc_errno.h: calc_errno.c ${MAKE_FILE}
 	    echo 'extern int sys_nerr;		' \
 		 '/* number of system errors */' >> calc_errno.h; \
 	else \
-	    ${CC} ${CCMAIN} -DTRY_ERRNO_NO_DECL \
+	    ${LCC} ${CCMAIN} -DTRY_ERRNO_NO_DECL \
 		  calc_errno.c -o calc_errno 2>calc_errno_tmp; \
 	    if [ -x ./calc_errno ]; then \
 		./calc_errno >> calc_errno.h; \
 	    else \
-		${CC} ${CCMAIN} -DTRY_ERRNO_STD_DECL \
+		${LCC} ${CCMAIN} -DTRY_ERRNO_STD_DECL \
 		      calc_errno.c -o calc_errno 2>calc_errno_tmp; \
 		if [ -x ./calc_errno ]; then \
 		    ./calc_errno >> calc_errno.h; \
 		else \
-		    ${CC} ${CCMAIN} -DTRY_ERRNO_OLD_DECL \
+		    ${LCC} ${CCMAIN} -DTRY_ERRNO_OLD_DECL \
 			  calc_errno.c -o calc_errno 2>calc_errno_tmp; \
 		    if [ -x ./calc_errno ]; then \
 			./calc_errno >> calc_errno.h; \
@@ -1971,16 +1983,16 @@ calcerr.c: calcerr.tbl calcerr_c.sed calcerr_c.awk ${MAKE_FILE}
 ##
 
 endian.o: endian.c have_unistd.h
-	${CC} ${CCMAIN} endian.c -c
+	${LCC} ${CCMAIN} endian.c -c
 
 endian: endian.o
-	${CC} ${ILDFLAGS} endian.o -o endian
+	${LCC} ${ILDFLAGS} endian.o -o endian
 
 longbits.o: longbits.c longlong.h have_unistd.h
-	${CC} ${CCMAIN} longbits.c -c
+	${LCC} ${CCMAIN} longbits.c -c
 
 longbits: longbits.o
-	${CC} ${ILDFLAGS} longbits.o -o longbits
+	${LCC} ${ILDFLAGS} longbits.o -o longbits
 
 ##
 #
@@ -2259,11 +2271,11 @@ bsdilist: ${DISTLIST} ${BUILD_H_SRC} calc.1
 ##
 
 check: all ./lib/regress.cal ${REGRESS_CAL}
-	${CALC_ENV} ./calc -i -q read regress
+	${CALC_ENV} ./calc -d -q read regress
 
 chk: ./lib/regress.cal ${REGRESS_CAL}
 	${V} echo '=-=-=-=-= start of $@ rule =-=-=-=-='
-	${CALC_ENV} ./calc -i -q read regress 2>&1 | ${AWK} -f check.awk
+	${CALC_ENV} ./calc -d -q read regress 2>&1 | ${AWK} -f check.awk
 	${V} echo '=-=-=-=-= end of $@ rule =-=-=-=-='
 
 ##
@@ -2336,6 +2348,7 @@ env:
 	@echo "LCFLAGS=${LCFLAGS}"; echo ""
 	@echo "LDFLAGS=${LDFLAGS}"; echo ""
 	@echo "ILDFLAGS=${ILDFLAGS}"; echo ""
+	@echo "LCC=${LCC}"; echo ""
 	@echo "CC=${CC}"; echo ""
 	@echo "SHELL=${SHELL}"; echo ""
 	@echo "MAKE=${MAKE}"; echo ""

README

@@ -24,6 +24,39 @@ If you run into problems, see the BUGS file.
 
 =-=
 
+Calc is distributed with an extensive collection of help files that
+are accessible from the command line.  The following assume that you
+are running calc from the distribution directory or that you have
+installed calc.  In these examples, the ">" is the calc prompt, not
+something that you type in.
+
+For list of help topics:
+
+    > help
+
+For overview of calc overview:
+
+    > help intro
+    > help overview
+    > help command
+    > help define
+    > help statement
+    > help variable
+
+For list of builtin functions:
+
+    > help builtin
+
+C programmers should note some unexpected differences in the calc syntax:
+
+    > help unexpected
+
+Calc is shipped with a library of calc scripts.  For a list see:
+
+    > help stdlib
+
+=-=
+
 See the file:
 
     help/todo

README.OLD

@@ -1,73 +0,0 @@
-# Copyright (c) 1997 David I. Bell
-# Permission is granted to use, distribute, or modify this source,
-# provided that this copyright notice remains intact.
-#
-# Arbitrary precision calculator.
-
-  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-    NOTE: This is an old historic README.  We recommend that
-	  you read README and HOWTO.INSTALL for more info.
-  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-I am allowing this calculator to be freely distributed for your enjoyment.
-Like all multi-precision programs, you should not depend absolutely on
-its results, since bugs in such programs can be insidious and only rarely
-show up.
-
--dbell-
-
-p.s. By Landon Curt Noll:
-
-Building calc in 3 easy steps:
-
-    1) Look at the makefile, and adjust it to suit your needs.
-
-       Here are some Makefile hints:
-
-	   In the past, some people have had to adjust the VARARG or
-	   TERMCONTROL because the Makefile cannot always guess
-	   correctly for certain systems.  You may need to play with
-	   these values if you experience problems.
-
-	   The default compiler used is 'cc'.  The default compiler flag
-	   is '-O'.  If you have gcc, or gcc v2 (or better) you should use
-	   that instead.   Some compilers allow for optimization beyond
-	   just -O (gcc v2 has -O2, mips cc has -O3).  You should select
-	   the best flag for speed optimization.  Calc can be cpu intensive
-	   so selecting a quality compiler and good optimization level can
-	   really pay off.
-
-    2) build calc:
-
-	make all
-
-    3) test calc:
-
-	make check
-
- ==>>>If you run into problems, follow the instructions in the BUGS file<<<==
-
-=-=
-
-For further reading:
-
-    LIBRARY
-    	explains how programs can use libcalc.a to take advantage
-	of the calc multi-precision routines.
-
-    help/todo
-	current wish list for calc
-
-    CHANGES
-	recent changes to calc
-
-    BUGS
-	known bugs, mis-features and how to report problems
-
-    help/full
-	full set of calc documentation
-
-=-=
-
-David I. Bell    dbell@auug.org.au
-chongo <Landon Curt Noll> /\../\

addop.c

@@ -164,7 +164,8 @@ endfunc(void)
 			size += dumpop(&fp->f_opcodes[size]);
 		}
 	}
-	if (inputisterminal() || conf->lib_debug >= 0) {
+	if ((inputisterminal() && conf->lib_debug & 1) ||
+		(!inputisterminal() && conf->lib_debug & 2)) {
 		printf("%s(", fp->f_name);
 		for (index = 0; index <  fp->f_paramcount; index++) {
 			if (index)
@@ -237,7 +238,8 @@ rmuserfunc(char *name)
 		return;
 	freenumbers(functions[index]);
 	free(functions[index]);
-	if (inputisterminal() && conf->lib_debug >= 0)
+	if ((inputisterminal() && conf->lib_debug & 1) ||
+			(!inputisterminal() && conf->lib_debug & 2))
 		printf("%s() undefined\n", name);
 	functions[index] = NULL;
 }
@@ -447,6 +449,11 @@ addop(long op)
 			case OP_GLOBALADDR:
 				diff = 1 + PTR_SIZE;
 				break;
+			case OP_UNDEF:
+				fp->f_opcodecount -= 1;
+				oldop = OP_NOP;
+				oldoldop = OP_NOP;
+				return;
 			default:
 				cut = FALSE;
 			}

calc.c

@@ -11,7 +11,6 @@
 #include <pwd.h>
 #include <sys/types.h>
 #include <ctype.h>
-#include <setjmp.h>
 
 #define CALC_C
 #include "calc.h"
@@ -37,33 +36,11 @@
 #include <stdlib.h>
 #endif
 
-
-/*
- * external definitions and functions
- */
-extern int abortlevel;		/* current level of aborts */
-extern BOOL inputwait;		/* TRUE if in a terminal input wait */
-extern jmp_buf jmpbuf;		/* for errors */
-extern int isatty(int tty);	/* TRUE if fd is a tty */
-
-extern int p_flag;		/* TRUE => pipe mode */
-extern int q_flag;		/* TRUE => don't execute rc files */
-extern int u_flag;		/* TRUE => unbuffer stdin and stdout */
-
-extern char *pager;		/* $PAGER or default */
-extern int stdin_tty;		/* TRUE if stdin is a tty */
-extern int interactive;		/* TRUE if interactive session (no cmd args) */
-extern char *program;		/* our name */
-extern char cmdbuf[];		/* command line expression */
-
-extern char *version(void);	/* return version string */
-
-
 /*
  * static definitions and functions
  */
-static char *usage = "usage: %s [-C] [-e] [-h] [-i] [-m mode] [-n] [-p]\n"
-		     "\t[-q] [-u] [[--] calc_cmd ...]\n";
+static char *usage = "usage: %s [-c] [-C] [-d] [-e] [-h] [-i] [-m mode]\n"
+		     "\t[-n] [-p] [-q] [-u] [-v] [[--] calc_cmd ...]\n";
 static void intint(int arg);	/* interrupt routine */
 
 
@@ -84,7 +61,7 @@ main(int argc, char **argv)
 	 * parse args
 	 */
 	program = argv[0];
-	while ((c = getopt(argc, argv, "Cehim:npquv")) != -1) {
+	while ((c = getopt(argc, argv, "Cehim:npquvcd")) != -1) {
 		switch (c) {
 		case 'C':
 #if defined(CUSTOM)
@@ -107,7 +84,7 @@ main(int argc, char **argv)
 			want_defhelp = 1;
 			break;
 		case 'i':
-			ign_errmax = TRUE;
+			i_flag = TRUE;
 			break;
 		case 'm':
 			if (optarg[1] == '\0' || *optarg<'0' || *optarg>'7') {
@@ -136,6 +113,12 @@ main(int argc, char **argv)
 		case 'u':
 			u_flag = TRUE;
 			break;
+		case 'c':
+			c_flag = TRUE;
+			break;
+		case 'd':
+			d_flag = TRUE;
+			break;
 		case 'v':
 			/*
 			 * we are too early in processing to call
@@ -152,7 +135,7 @@ main(int argc, char **argv)
 			exit(1);
 		}
 	}
-	interactive = (optind >= argc);
+	havecommands = (optind < argc);
 
 	/*
 	 * look at the length of any trailing command args
@@ -201,8 +184,7 @@ main(int argc, char **argv)
 	 * initialize
 	 */
 	libcalc_call_me_first();
-	stdin_tty = TRUE;	/* assume internactive default */
-	conf->tab_ok = TRUE;	/* assume internactive default */
+	stdin_tty = isatty(0);		/* assume stdin is on fd 0 */
 	if (want_defhelp) {
 		givehelp(DEFAULTCALCHELP);
 		libcalc_call_me_last();
@@ -212,22 +194,13 @@ main(int argc, char **argv)
 	/*
 	 * if allowed or needed, print version and setup bindings
 	 */
-	if (interactive) {
-		/*
-		 * check for pipe mode and/or non-tty stdin
-		 */
-		if (!p_flag) {
-			stdin_tty = isatty(0);	/* assume stdin is on fd 0 */
-		}
-
-		/*
-		 * if tty, setup bindings
-		 */
-		if (stdin_tty) {
+	if (!havecommands && stdin_tty) {
+		if (!d_flag) {
 			printf("%s (version %s)\n", CALC_TITLE, version());
 			printf("[%s]\n\n",
 			    "Type \"exit\" to exit, or \"help\" for help.");
-			switch (hist_init(calcbindings)) {
+		}
+		switch (hist_init(calcbindings)) {
 			case HIST_NOFILE:
 				fprintf(stderr,
 				    "%s: Cannot open bindings file \"%s\", "
@@ -240,7 +213,6 @@ main(int argc, char **argv)
 					"%s: Cannot set terminal modes, "
 					"fancy editing disabled\n", program);
 				break;
-			}
 		}
 	}
 
@@ -252,53 +224,87 @@ main(int argc, char **argv)
 		/*
 		 * reset/initialize the computing environment
 		 */
-		if (post_init) {
+		if (post_init)
 			initialize();
-		} else {
-			/* initialize already done, jmpbuf is ready */
-			post_init = TRUE;
-		}
-
-		/*
-		 * if arg mode or non-tty mode, just do the work and be gone
-		 */
-		if (!interactive || !stdin_tty) {
-			if (q_flag == FALSE && allow_read) {
-				runrcfiles();
-				q_flag = TRUE;
-			}
-			if (interactive)
-				(void) openterminal();
-			else
-				(void) openstring(cmdbuf);
-			start_done = TRUE;
-			getcommands(FALSE);
-			libcalc_call_me_last();
-			exit(0);
-		}
-	}
-	/* if in arg mode, we should not get here */
-	if (!interactive) {
-		libcalc_call_me_last();
-		exit(1);
+		post_init = TRUE;
 	}
 
 	/*
-	 * process commands
+	 * (re)establish the interrupt handler
 	 */
-	if (!start_done) {
-		reinitialize();
-	}
 	(void) signal(SIGINT, intint);
-	start_done = TRUE;
-	getcommands(TRUE);
+
+	/*
+	 * execute calc code based on the run state
+	 */
+	if (run_state == RUN_PRE_BEGIN) {
+		if (!q_flag && allow_read) {
+			run_state = RUN_PRE_RCFILES;
+			runrcfiles();
+		}
+		run_state = RUN_POST_RCFILES;
+	}
+	if (run_state == RUN_PRE_RCFILES) {
+		fprintf(stderr, "Execution error in rcfiles\n");
+		if ((c_flag && !stoponerror) || stoponerror < 0) {
+			getcommands(FALSE);
+			run_state = RUN_POST_RCFILES;
+		} else {
+			if ((havecommands && !i_flag) || !stdin_tty)
+				run_state = RUN_STOP_ON_ERROR;
+			else if (havecommands)
+				run_state = RUN_POST_CMD_ARGS;
+			else
+				run_state = RUN_POST_RCFILES;
+		}
+	}
+	if (run_state == RUN_POST_RCFILES) {
+		if (havecommands) {
+			run_state = RUN_PRE_CMD_ARGS;
+			(void) openstring(cmdbuf);
+			getcommands(FALSE);
+		}
+		run_state = RUN_POST_CMD_ARGS;
+	}
+	if (run_state == RUN_PRE_CMD_ARGS) {
+		fprintf(stderr, "Execution error in commands\n");
+		if ((c_flag && !stoponerror) || stoponerror < 0) {
+			getcommands(FALSE);
+			run_state = RUN_POST_CMD_ARGS;
+		} else {
+			closeinput();
+			if (!stdin_tty || !i_flag)
+				run_state = RUN_STOP_ON_ERROR;
+			else
+				run_state = RUN_POST_CMD_ARGS;
+		}
+	}
+	if (run_state == RUN_POST_CMD_ARGS) {
+		if (stdin_tty && ((havecommands && !i_flag) || p_flag))
+			run_state = RUN_NOT_TOP_LEVEL;
+		else
+			openterminal();
+	} else if (run_state == RUN_TOP_LEVEL) {
+		if (!stdin_tty && (!c_flag || stoponerror) &&
+		    stoponerror >= 0) {
+			run_state = RUN_STOP_ON_ERROR;
+		} else if ((c_flag && !stoponerror) || stoponerror < 0)
+			getcommands(FALSE);
+		else
+			reinitialize();
+	}
+
+	if (run_state < RUN_NOT_TOP_LEVEL) {
+		run_state = RUN_TOP_LEVEL;
+		getcommands(TRUE);
+	}
 
 	/*
 	 * all done
 	 */
 	libcalc_call_me_last();
-	/* exit(0); */
-	return 0;
+	return (run_state == RUN_STOP_ON_ERROR ||
+		run_state == RUN_UNKNOWN) ? 1 : 0;
 }
 
 

calc.h

@@ -10,6 +10,7 @@
 #if !defined(__CALC_H__)
 #define	__CALC_H__
 
+#include <setjmp.h>
 
 #include "value.h"
 
@@ -58,6 +59,8 @@
 #define ABORT_MATH	3	/* abort on any math operation */
 #define ABORT_NOW	4	/* abort right away */
 
+#define ERRMAX 20		/* default errmax value */
+
 /*
  * File ids corresponding to standard in, out, error, and when not in use.
  */
@@ -124,7 +127,6 @@ extern long linenumber(void);
 extern void runrcfiles(void);
 extern void closeinput(void);
 
-
 /*
  * Other routines.
  */
@@ -138,21 +140,39 @@ extern void libcalc_call_me_first(void);
 extern void libcalc_call_me_last(void);
 extern void showerrors(void);
 
-
 /*
  * Initialization
  */
 extern void initialize(void);
 extern void reinitialize(void);
-
+extern int isatty(int tty);	/* TRUE if fd is a tty */
+extern char *version(void);	/* return version string */
+extern int post_init;		/* TRUE => setjmp for math_error is ready */
 
 /*
- * Global data definitions.
+ * global flags and definitions
  */
+extern int abortlevel;		/* current level of aborts */
+extern BOOL inputwait;		/* TRUE if in a terminal input wait */
+extern jmp_buf jmpbuf;		/* for errors */
+
+extern int p_flag;		/* TRUE => pipe mode */
+extern int q_flag;		/* TRUE => don't execute rc files */
+extern int u_flag;		/* TRUE => unbuffer stdin and stdout */
+extern int d_flag;		/* TRUE => disable heading, lib_debug == 0 */
+extern int c_flag;		/* TRUE => continue after error if permitted */
+extern int i_flag;		/* TRUE => try to go interactive after error */
+extern int stoponerror;		/* >0 => stop, <0 => continue, ==0 => use -c */
+
+extern char *pager;		/* $PAGER or default */
+extern int stdin_tty;		/* TRUE if stdin is a tty */
+extern int havecommands;	/* TRUE if have cmd args) */
+extern char *program;		/* our name */
+extern char cmdbuf[];		/* command line expression */
+
 extern int abortlevel;		/* current level of aborts */
 extern BOOL inputwait;		/* TRUE if in a terminal input wait */
 extern VALUE *stack;		/* execution stack */
-extern int start_done;		/* TRUE => start up processing finished */
 extern int dumpnames;		/* TRUE => dump names rather than indices */
 
 extern char *calcpath;		/* $CALCPATH or default */
@@ -163,14 +183,28 @@ extern char *shell;		/* $SHELL or default */
 extern char *program;		/* our name (argv[0]) */
 
 extern int no_env;	/* TRUE (-e) => ignore env vars on startup */
-extern int ign_errmax;	/* TRUE (-i) => ignore when errcount exceeds errmax */
+extern int errmax;	/* if >= 0, error when errcount exceeds errmax */
 extern int new_std;	/* TRUE (-n) => use newstd configuration */
 
 extern int allow_read;	/* FALSE => may not open any files for reading */
 extern int allow_write;	/* FALSE => may not open any files for writing */
 extern int allow_exec;	/* FALSE => may not execute any commands */
 
-extern int post_init;	/* TRUE => setjmp for math_error is ready */
+/* 
+ * calc startup and run state 
+ */
+typedef enum {
+    RUN_UNKNOWN = -1,		/* unknown or unset start state */
+    RUN_PRE_BEGIN = 0,		/* pre-startup state, calc execution started */
+    RUN_PRE_RCFILES = 1,	/* rc files about to or are being evaluated */
+    RUN_POST_RCFILES = 2,	/* rc files have been evaluated */
+    RUN_PRE_CMD_ARGS = 3,	/* cmd_args about to or are being evaluated */
+    RUN_POST_CMD_ARGS = 4,	/* cmd_args have been evaluated */
+    RUN_TOP_LEVEL = 5,		/* running at the top interactive level */
+    RUN_NOT_TOP_LEVEL = 6,	/* running not at the top interactive level */
+    RUN_STOP_ON_ERROR = 7	/* we need to stop due to errors */
+} run;
+extern run run_state;	
 
 
 /*

calc.man

@@ -1,190 +1,356 @@
 .\"
-.\" Copyright (c) 1994 David I. Bell and Landon Curt Noll
+.\" Copyright (c) 1993 David I. Bell and Landon Curt Noll
+.\" Original man page dated 15nov93
+.\" Copyright (c) 1999 David I. Bell and Landon Curt Noll
 .\" Permission is granted to use, distribute, or modify this source,
 .\" provided that this copyright notice remains intact.
 .\"
 .\" calculator by David I. Bell
 .\" man page by Landon Noll
-.TH calc 1 "^..^" "15nov93"
+.TH calc 1 "^..^" "15Oct1999"
 .SH NAME
 calc \- arbitrary precision calculator
 .SH SYNOPSIS
 \fIcalc\fP
-[\fI\-h\fP]
-[\fI\-m mode\fP]
-[\fI\-p\fP]
-[\fI\-q\fP]
-[\fI\-u\fP]
-[\fI\-v\fP]
-[\fIcalc_cmd \&.\|.\|.\fp]
+.RB [ \-c ]
+.RB [ \-C ]
+.RB [ \-d ]
+.RB [ \-e ]
+.RB [ \-h ]
+.RB [ \-i ]
+.RB [ \-m\ \&mode ]
+.br
+.in +5n
+.RB [ \-n ]
+.RB [ \-p ]
+.RB [ \-q ]
+.RB [ \-u ]
+.RB [ \-v ]
+.RB [ calc_cmd\ \&.\|.\|. ]
+.in -5n
 .SH DESCRIPTION
 \&
 .br
 CALC COMMAND LINE
 .PP
+
 .TP
-\fI\-h\fP
-Print a help message.
-This option implies \fI \-q\fP.
-This is equivalent to the calc command \fIhelp help\fP.
-The help facility is disabled unless the \fImode\fP is 5 or 7.
-See \fI\-m\fP below.
-.sp
-.TP
-\fI\-m mode\fP
-This flag sets the permission mode of calc.
-It controls the ability for \fIcalc\fP to open files
-and execute programs.
-\fIMode\fP may be a number from 0 to 7.
-.sp
-The \fImode\fP value is interpreted in a way similar
-to that of the \fRchmod(1)\fP octal mode:
-.sp
-.in +0.5i
+.B \-c
+Continue reading command lines even after an execution
+error has caused the abandonment of a line.
+.sp 1
+For example:
+.sp 1
+.in +5n
 .nf
-0   do not open any file, do not execute progs
-1   do not open any file
-2   do not open files for reading, do not execute progs
-3   do not open files for reading
-4   do not open files for writing, do not execute progs
-5   do not open files for writing
-6   do not execute any program
-7   allow everything (default mode)
+calc read many_errors.cal
 .fi
-.in -0.5i
-.sp
-If one wished to run calc from a privledged user, one might
-want to use \fI\-m 0\fP in an effort to make calc more secure.
-.sp
-\fIMode\fP bits for reading and writing apply only on an open.
+.in -5n
+.sp 1
+will cause
+.B calc
+to abort on the first error, whereas:
+.sp 1
+.in +5n
+.nf
+calc -c read many_errors.cal
+.fi
+.in -5n
+.sp 1
+will
+cause
+.B calc
+to try to process each line being read
+despite the errors that it encounters.
+
+.TP
+.B \-C
+Permit the execution of custom builtin functions.  Without
+this flag, calling the custom() builtin function will
+simply generate an error.
+.sp 1
+Use if this flag may cause
+.B calc
+to execute functions that
+are non-standard and that are not portable.  Custom builtin
+functions are disabled by default for this reason.
+
+.TP
+.B \-d
+Disable the printing of the opening title.  The printing
+of library debug and informational messages is also disabled
+as if \fBconfig("lib_debug", 0)\fP had been executed.
+.sp 1
+For example:
+.sp 1
+.in +5n
+calc 'read qtime; qtime(2)'
+.in -5n
+.sp 1
+will output something like:
+.sp 1
+.in +5n
+.nf
+qtime(utc_hr_offset) defined
+It's nearly ten past six.
+.fi
+.in -5n
+.sp 1
+whereas:
+.sp 1
+.in +5n
+.nf
+calc -d 'read qtime; qtime(2)'
+.fi
+.in -5n
+.sp 1
+will just say:
+.sp 1
+.in +5n
+.nf
+It's nearly ten past six.
+.fi
+.in -5n
+.sp 1
+
+.TP
+.B \-e
+Ignore any environment variables on startup.
+The getenv() builtin will still return values, however.
+
+.TP
+.B \-h
+Print a help message.  This option implies
+.BR \-q .
+This
+is equivalent to the
+.B calc
+command help help.
+The help facility is disabled unless the mode is 5 or 7.
+See
+.BR \-m .
+
+.TP
+.B \-i
+Become interactive if possible.
+Be default, if
+.I calc_cmd
+args are given,
+.B calc
+will execute them and exit.
+This flag args are given,
+.B calc
+will execute them and exit.
+This flag will cause
+.B calc
+to drop into interactive mode after the
+commands are executed.
+.sp 1
+For example:
+.sp 1
+.in +5n
+.nf
+calc 2+5
+.fi
+.in -5n
+.sp 1
+will print the value 7 and exit whereas:
+.sp 1
+.in +5n
+.nf
+calc -i 2+5
+.fi
+.in -5n
+.sp 1
+will print the value 7 and prompt the user for more
+.B calc
+commands.
+
+.TP
+.BR \-m " mode"
+This flag sets the permission mode of
+.BR calc .
+It controls the ability for
+.B calc
+to open files and execute programs.
+Mode may be a number from 0 to 7.
+.sp 1
+The mode value is interpreted in a way similar to that
+of the
+.BR chmod (1)
+octal mode:
+.sp 1
+.in +5n
+.nf
+0  do not open any file, do not execute progs
+1  do not open any file
+2  do not open files for reading, do not execute progs
+3  do not open files for reading
+4  do not open files for writing, do not execute progs
+5  do not open files for writing
+6  do not execute any program
+7  allow everything (default mode)
+.fi
+.in -5n
+.sp 1
+If one wished to run
+.B calc
+from a privileged user, one might want to use
+.B \-m
+0 in an effort to make
+.B calc
+somewhat more secure.
+.sp 1
+Mode bits for reading and writing apply only on an
+open.
 Files already open are not effected.
-Thus if one wanted to use the \fI\-m 0\fP in an effort to make
-\fIcalc\fP more secure, but still wanted to read and write a specific
-file, one might want to do:
-.sp
-.in +0.5i
+Thus if one wanted to use the
+.B \-m
+0 in an effort to make
+.B calc
+somewhat more secure, but still wanted to read and write a specific
+file, one might want to do in
+.BR sh (1),
+.BR ksh (1),
+.BR bash (1)-like
+shells:
+.sp 1
+.in +5n
 .nf
-\fRcalc \-m 0 3<a.file\fP
+calc -m 0 3<a.file
 .fi
-.in -0.5i
-.sp
-Files presented to \fIcalc\fP in this way are opened in an unknown mode.
-\fICalc\fP will attempt to read or write them if directed.
-.sp
-If the \fImode\fP disables opening of files for reading, then
-the startup library scripts are disabled as of \fI\-q\fP was given.
-The reading of key bindings is also disabled when the \fImode\fP
-disables opening of files for reading.
+.in -5n
+.sp 1
+Files presented to
+.B calc
+in this way are opened in an
+unknown mode.
+.B Calc
+will attempt to read or write them if directed.
+.sp 1
+If the mode disables opening of files for reading, then
+the startup library scripts are disabled as of
+.B \-q
+was given.
+The reading of key bindings is also disabled
+when the mode disables opening of files for reading.
+
 .TP
-\fI \-p\fP
-Pipe processing is enabled by use of \-p.  For example:
-.sp
-.in +0.5i
+.B \-n
+Use the new configuration defaults instead of the old
+default classic defaults.
+This flag as the same effect
+as executing \fBconfig("all", "newcfg")\fP at startup time.
+
+.TP
+.B \-p
+Pipe processing is enabled by use of
+.BR \-p .
+For example:
+.sp 1
+.in +5n
 .nf
-\fRecho "print 2^21701\-1, 2^23209\-1" | calc \-p | fizzbin\fP
+calc -p '2^21701-1' | fizzbin
 .fi
-.in -0.5i
-.sp
-In pipe mode, \fIcalc\fP does not prompt, does not print leading tabs
-and does not print the initial header.
+.in -5n
+.sp 1
+In pipe mode,
+.B calc
+does not prompt, does not print leading
+tabs and does not print the initial header.
+The
+.B \-p
+flag overrides
+.BR \-i .
+
 .TP
-\fI \-q\fP
-Disable the use of the \fI$CALCRC\fP startup scripts.
+.B \-q
+Disable the use of the $CALCRC startup scripts.
+
 .TP
-\fI \-u\fP
+.B \-u
 Disable buffering of stdin and stdout.
+
 .TP
-\fI \-v\fP
-Print the version and exit.
+.B \-v
+Print the
+.B calc
+version number and exit.
 .PP
-Without \fIcalc_cmd\fPs, \fIcalc\fP operates interactively.
-If one or more \fIcalc_cmd\fPs are given on the command line,
-\fIcalc\fP will execute them and exit.
-The printing of leading tabs on output is disabled
-as if \fIconfig("tab",0)\fP had been executed.
+Without
+.IR calc_cmd ,
+.B calc
+operates interactively.
+If one or more
+.I calc_cmd
+are given on the command line,
+.B calc
+will execute them and exit.
+If
+.B \-i
+is given,
+.B calc
+will attempt to become interactive
+even of one or more
+.I calc_cmd
+are given on the command line.
 .PP
-Normally on startup, \fIcalc\fP attempts to execute a collection
-of library scripts.
-The environment variable \fI$CALCRC\fP (if non-existent then
-a compiled in value) contains a \fI:\fP separated list of
-startup library scripts.
-No error conditions are produced if these startup library scripts
-are not found.
+Normally on startup,
+.B calc
+attempts to execute a collection of
+library scripts.
+The environment variable $CALCRC (if non-existent
+then a compiled in value) contains a :  separated list of startup
+library scripts.
+No error conditions are produced if these startup
+library scripts are not found.
 .PP
-If the \fImode\fP disables opening of files for reading, then
-the startup library scripts are disabled as of \fI\-q\fP was given
-and \fI$CALCRC\fP as well as the default compiled in value are ignored.
+If the mode disables opening of files for reading, then the startup
+library scripts are disabled as of
+.B \-q
+was given and $CALCRC as well
+as the default compiled in value are ignored.
 .PP
 Filenames are subject to ``~'' expansion (see below).
-The environment variable \fI$CALCPATH\fP (if non-existent then
-a compiled in value) contains a \fI:\fP separated list of search
-directories.
-If a file does not begin with \fI/\fP, \fI~\fP or \fI./\fP,
-then it is searched for under each directory listed in the \fI$CALCPATH\fP.
-It is an error if no such readable file is found.
+The
+environment variable $CALCPATH (if non-existent then a compiled in
+value) contains a : separated list of search directories.
+If a
+file does not begin with /, ~ or ./, then it is searched for under
+each directory listed in the $CALCPATH.
+It is an error if no such
+readable file is found.
 .PP
-Calc treats all open files, other than stdin, stdout and stderr
-as files available for reading and writing.
-One may present calc with an already open file in the following way:
-.sp
-.in +0.5i
+.B Calc
+treats all open files, other than stdin, stdout and
+stderr as files available for reading and writing.
+One may
+present
+.B calc
+with an already open file using
+.BR sh (1),
+.BR ksh (1),
+.BR bash (1)-like
+shells is to:
+.sp 1
+.in +5n
+calc 3<open_file 4<open_file2
+.in -5n
+.sp 1
+For more information use the following
+.B calc
+commands:
+.sp 1
+.in +5n
 .nf
-\fRcalc 3<open_file 4<open_file2\fP
-.fi
-.in -0.5i
-.PP
-For more information use the following calc commands:
-.PP
-.in 1.0i
-help usage
-.br
 help help
-.br
+help overview
+help usage
 help environment
-.in -1.0i
-.PP
-OVERVIEW
-.PP
-\fICalc\fP is arbitrary precision arithmetic system that uses
-a C-like language.
-\fICalc\fP is useful as a calculator, an algorithm prototyped
-and as a mathematical research tool.
-More importantly, \fIcalc\fP provides one with a machine
-independent means of computation.
-.PP
-\fICalc\fP comes with a rich set of builtin mathematical
-and programmatic functions.
-.PP
-\fICalc\fP is distributed with library of scripts.
-Written in the same C-like language, library scripts may be
-read in and executed during a \fIcalc\fP session.
-These library scripts are also provided because they are
-useful and to serve as examples of the \fIcalc\fP language.
-One may further extend \fIcalc\fP thru the
-use of user defined scripts.
-.PP
-Internally calc represents numeric values as fractions reduced to their
-lowest terms.
-The numerators and denominators of these factions may grow to
-arbitrarily large values.
-Numeric values read in are automatically converted into rationals.
-The user need not be aware of this internal representation.
-.PP
-For more information use the following calc commands:
-.PP
-.in 1.0i
-help intro
-.br
-help builtin
-.br
-help stdlib
-.br
-help define
-.br
-show builtins
-.br
-show functions
-.in -1.0i
+help config
+.fi
+.in -5n
+.sp 1
 .PP
 DATA TYPES
 .PP
@@ -199,7 +365,9 @@ multiplication, division, negation, squaring, modulus,
 rounding, exponentiation, equality, comparison, printing
 and so on.
 .PP
-For more information use the following calc commands:
+For more information use the following
+.B calc
+commands:
 .PP
 .in 1.0i
 help types
@@ -220,7 +388,9 @@ procedure.
 Values may be grouped together in a matrix, or into a
 a list that permits stack and queue style operations.
 .PP
-For more information use the following calc commands:
+For more information use the following
+.B calc
+commands:
 .PP
 .in 1.0i
 help variable
@@ -256,7 +426,9 @@ For example:
 ~chongo/lib/fft_multiply.cal
 .in -1.0i
 .PP
-For more information use the following calc command:
+For more information use the following
+.B calc
+command:
 .PP
 .in 1.0i
 help file
@@ -275,7 +447,9 @@ These include commands such as function definition, help,
 reading in library scripts, dump files to a file, error notification,
 configuration control and status.
 .PP
-For more information use the following calc command:
+For more information use the following
+.B calc
+command:
 .PP
 .in 1.0i
 help command
@@ -295,7 +469,8 @@ help config
 .PD 0
 .TP 20
 ${LIBDIR}/*.cal
-library scripts shipped with calc
+library scripts shipped with
+.B calc
 .br
 .sp
 .TP 20
@@ -323,7 +498,9 @@ Default value: ${CALCPATH}
 .TP 5
 CALCRC
 On startup (unless \-h or \-q was given on the command
-line), calc searches for files along this :-separated
+line),
+.B calc
+searches for files along this :-separated
 environment variable.
 .br
 .sp
@@ -333,7 +510,9 @@ Default value: ${CALCRC}
 .TP 5
 CALCBINDINGS
 On startup (unless \fI\-h\fP or \fI\-q\fP was given on the command
-line, or \fI\-m\fP disallows opening files for reading), calc reads
+line, or \fI\-m\fP disallows opening files for reading),
+.B calc
+reads
 key bindings from the filename specified
 by this environment variable.
 .br
@@ -343,9 +522,12 @@ Default value: ${CALCBINDINGS}
 .SH CREDIT
 \&
 .br
-The majority of calc was written by David I. Bell.
+The majority of
+.B calc
+was written by David I. Bell.
 .sp
-Calc archives and calc-tester mailing list maintained by Landon Curt Noll.
+.B Calc
+archives and calc-tester mailing list maintained by Landon Curt Noll.
 .sp
 Thanks for suggestions and encouragement from Peter Miller,
 Neil Justusson, and Landon Noll.
@@ -378,30 +560,27 @@ Copyright (c) 19xx Ernest Bowen and Landon Curt Noll
 Permission is granted to use, distribute, or modify this source,
 provided that this copyright notice remains intact.
 .sp
-Send calc comments, suggestions, bug fixes, enhancements
-and interesting calc scripts that you would like you see included
+Send comments, suggestions, bug fixes, enhancements
+and interesting
+.B calc
+scripts that you would like you see included
 in future distributions to:
 .sp
 .in +0.5i
-dbell@auug.org.au
-.br
-chongo@toad.com
+calc-tester-request@postofc.corp.sgi.com
 .in -0.5i
 .sp
-Landon Noll maintains the official calc ftp archive at:
+Landon Noll maintains the the
+.B calc
+web site is located at:
 .sp
 .in +0.5i
-ftp://ftp.uu.net/pub/calc
+http://reality.sgi.com/chongo/calc
 .in -0.5i
 .sp
-Alpha test versions, complete with bugs, untested code and
-experimental features may be fetched (if you are brave) under:
-.sp
-.in +0.5i
-http://reality.sgi.com/chongo/calc/
-.in -0.5i
-.sp
-One may join the calc testing group by sending a request to:
+One may join the
+.B calc
+testing group by sending a request to:
 .sp
 .in +0.5i
 calc-tester-request@postofc.corp.sgi.com
@@ -410,14 +589,14 @@ calc-tester-request@postofc.corp.sgi.com
 Your message body (not the subject) should consist of:
 .sp
 .in +0.5i
+.nf
 subscribe calc-tester address
-.br
 end
-.br
 name your_full_name
+.fi
+.in -0.5i
 .sp
 where "address" is your EMail address and "your_full_name"
 is your full name.
-.in -0.5i
 .sp
-Enjoy!
+Share and Enjoy! :\-)

codegen.c

@@ -261,6 +261,8 @@ getfunction(void)
 {
 	char *name;		/* parameter name */
 	int type;		/* type of token read */
+	LABEL label;
+	long index;
 
 	(void) tokenmode(TM_DEFAULT);
 	if (gettoken() != T_SYMBOL) {
@@ -276,9 +278,11 @@ getfunction(void)
 	beginfunc(name, FALSE);
 	enterfuncscope();
 	if (gettoken() != T_LEFTPAREN) {
-		scanerror(T_SEMICOLON, "Left parenthesis expected for function");
+		scanerror(T_SEMICOLON,
+			"Left parenthesis expected for function");
 		return;
 	}
+	index = 0;
 	for (;;) {
 		type = gettoken();
 		if (type == T_RIGHTPAREN)
@@ -292,12 +296,22 @@ getfunction(void)
 			case SYM_UNDEFINED:
 			case SYM_GLOBAL:
 			case SYM_STATIC:
-				(void) addparam(name);
+				index = addparam(name);
 				break;
 			default:
 				scanerror(T_NULL, "Parameter \"%s\" is already defined", name);
 		}
 		type = gettoken();
+		if (type == T_ASSIGN) {
+			clearlabel(&label);
+			addopone(OP_PARAMADDR, index);
+			addoplabel(OP_JUMPNN, &label);
+			getopassignment();
+			addop(OP_ASSIGNPOP);
+			setlabel(&label);
+			type = gettoken();
+		}
+
 		if (type == T_RIGHTPAREN)
 			break;
 		if (type != T_COMMA) {
@@ -598,25 +612,25 @@ getstatement(LABEL *contlabel, LABEL *breaklabel, LABEL *nextcaselabel, LABEL *d
 					scanerror(T_SEMICOLON, "CONTINUE not within FOR, WHILE, or DO");
 					return;
 				}
-				addoplabel(OP_JUMPNE, contlabel);
+				addoplabel(OP_JUMPNZ, contlabel);
 				break;
 			case T_BREAK:
 				if (breaklabel == NULL_LABEL) {
 					scanerror(T_SEMICOLON, "BREAK not within FOR, WHILE, or DO");
 					return;
 				}
-				addoplabel(OP_JUMPNE, breaklabel);
+				addoplabel(OP_JUMPNZ, breaklabel);
 				break;
 			case T_GOTO:
 				if (gettoken() != T_SYMBOL) {
 					scanerror(T_SEMICOLON, "Missing label in goto");
 					return;
 				}
-				addop(OP_JUMPNE);
+				addop(OP_JUMPNZ);
 				addlabel(tokensymbol());
 				break;
 			default:
-				addoplabel(OP_JUMPEQ, &label1);
+				addoplabel(OP_JUMPZ, &label1);
 				rescantoken();
 				getstatement(contlabel, breaklabel, NULL_LABEL, NULL_LABEL);
 				if (gettoken() != T_ELSE) {
@@ -667,7 +681,7 @@ getstatement(LABEL *contlabel, LABEL *breaklabel, LABEL *nextcaselabel, LABEL *d
 			contlabel = &label1;
 			rescantoken();
 			(void) getexprlist();
-			addoplabel(OP_JUMPNE, &label3);
+			addoplabel(OP_JUMPNZ, &label3);
 			addoplabel(OP_JUMP, breaklabel);
 			if (gettoken() != T_SEMICOLON) {
 				(void) tokenmode(oldmode);
@@ -708,7 +722,7 @@ getstatement(LABEL *contlabel, LABEL *breaklabel, LABEL *nextcaselabel, LABEL *d
 		clearlabel(breaklabel);
 		setlabel(contlabel);
 		getcondition();
-		addoplabel(OP_JUMPEQ, breaklabel);
+		addoplabel(OP_JUMPZ, breaklabel);
 		getstatement(contlabel, breaklabel, NULL_LABEL, NULL_LABEL);
 		addoplabel(OP_JUMP, contlabel);
 		setlabel(breaklabel);
@@ -731,7 +745,7 @@ getstatement(LABEL *contlabel, LABEL *breaklabel, LABEL *nextcaselabel, LABEL *d
 		}
 		setlabel(contlabel);
 		getcondition();
-		addoplabel(OP_JUMPNE, &label3);
+		addoplabel(OP_JUMPNZ, &label3);
 		setlabel(breaklabel);
 		(void) tokenmode(oldmode);
 		return;
@@ -815,6 +829,8 @@ getstatement(LABEL *contlabel, LABEL *breaklabel, LABEL *nextcaselabel, LABEL *d
 		printeol = TRUE;
 		for (;;) {
 			switch (gettoken()) {
+				case T_RIGHTPAREN:
+				case T_RIGHTBRACKET:
 				case T_RIGHTBRACE:
 				case T_NEWLINE:
 				case T_EOF:
@@ -1377,6 +1393,21 @@ getassignment (void)
 {
 	int type;		/* type of expression */
 
+	switch(gettoken()) {
+		case T_COMMA:
+		case T_SEMICOLON:
+		case T_NEWLINE:
+		case T_RIGHTPAREN:
+		case T_RIGHTBRACKET:
+		case T_RIGHTBRACE:
+		case T_EOF:
+			addop(OP_UNDEF);
+			rescantoken();
+			return EXPR_RVALUE;
+	}
+
+	rescantoken();
+
 	type = getaltcond();
 
 	switch (gettoken()) {
@@ -1441,7 +1472,7 @@ getaltcond(void)
 	}
 	clearlabel(&donelab);
 	clearlabel(&altlab);
-	addoplabel(OP_JUMPEQ, &altlab);
+	addoplabel(OP_JUMPZ, &altlab);
 	type = getaltcond();
 	if (gettoken() != T_COLON) {
 		scanerror(T_SEMICOLON, "Missing colon for conditional expression");

config.c

@@ -93,7 +93,7 @@ CONFIG oldstd = {	/* backward compatible standard configuration */
 	FALSE,			/* skip duplicate block output lines */
 	BLK_BASE_HEX,		/* block octet print base */
 	BLK_FMT_HD_STYLE,	/* block output format */
-	0,			/* calc library debug level */
+	3,			/* calc library debug level */
 	0,			/* internal calc debug level */
 	0 			/* user defined debug level */
 };
@@ -128,7 +128,7 @@ CONFIG newstd = {	/* new non-backward compatible configuration */
 	FALSE,			/* skip duplicate block output lines */
 	BLK_BASE_HEX,		/* block octet print base */
 	BLK_FMT_HD_STYLE,	/* block output format */
-	0,			/* calc library debug level */
+	3,			/* calc library debug level */
 	0,			/* internal calc debug level */
 	0 			/* user defined debug level */
 };

config.h

@@ -85,7 +85,7 @@
 
 
 /*
- * config defult symbols
+ * config default symbols
  */
 #define DISPLAY_DEFAULT 20	/* default digits for float display */
 #define EPSILON_DEFAULT "1e-20"	/* allowed error for float calculations */
@@ -95,8 +95,6 @@
 #define MAXPRINT_DEFAULT 16	/* default number of elements printed */
 #define MAXSCANCOUNT 20		/* default max scan errors before an abort */
 
-#define ERRMAX 20		/* default errmax value */
-
 
 /*
  * configuration object

custom/c_pzasusb8.c

@@ -58,7 +58,7 @@ c_pzasusb8(char *name, int count, VALUE **vals)
 	 */
 	h = (USB8 *) z.v;
 	for (i=0; i < half_cnt; ++i) {
-		printf("%d:\t", i);
+		printf("%ld:\t", i);
 		for (j=0; j < half_len; ++j) {
 			printf("%02x", (int)(*h++));
 		}

endian.c

@@ -76,5 +76,5 @@ main(void)
 	    exit(1);
 	}
 	/* exit(0); */
-	return 0; 
+	return 0;
 }

func.c

@@ -72,6 +72,7 @@ static int strscan(char *s, int count, VALUE **vals);
 static int filescan(FILEID id, int count, VALUE **vals);
 static VALUE f_eval(VALUE *vp);
 static VALUE f_fsize(VALUE *vp);
+static int malloced_putenv(char *str);
 
 
 
@@ -84,6 +85,21 @@ extern void matrandperm(MATRIX *M);
 extern void listrandperm(LIST *lp);
 extern int idungetc(FILEID id, int ch);
 
+extern int stoponerror;
+
+
+/*
+ * malloced environment storage
+ */
+#define ENV_POOL_CHUNK 10	/* env_pool elements to allocate at a time */
+struct env_pool {
+    char *getenv;	/* what getenv() would return, NULL => unused */
+    char *putenv;	/* pointer given to putenv() */
+};
+static int env_pool_cnt = 0;	/* number of env_pool elements in use */
+static int env_pool_max = 0;	/* number of env_pool elements allocated */
+static struct env_pool *e_pool = NULL;	/* env_pool elements */
+
 
 /*
  * if HZ & CLK_TCK are not defined, pick typical values, hope for the best
@@ -209,6 +225,28 @@ f_prompt(VALUE *vp)
 }
 
 
+static VALUE
+f_display(int count, VALUE **vals)
+{
+	long oldvalue;
+	VALUE res;
+
+	oldvalue = conf->outdigits;
+
+	if (count > 0) {
+		if (vals[0]->v_type != V_NUM || qisfrac(vals[0]->v_num) ||
+			qisneg(vals[0]->v_num) || zge31b(vals[0]->v_num->num))
+			fprintf(stderr,
+				 "Out-of-range arg for display ignored\n");
+		else
+			conf->outdigits = qtoi(vals[0]->v_num);
+	}
+	res.v_type = V_NUM;
+	res.v_num = itoq(oldvalue);
+	return res;
+}
+
+
 /*ARGSUSED*/
 static VALUE
 f_null(int count, VALUE **vals)
@@ -4392,11 +4430,7 @@ f_errno(int count, VALUE **vals)
 			math_error("errno argument out of range");
 			/*NOTREACHED*/
 		}
-		newerr = z1tol(vp->v_num->num);
-		if (newerr >= 32768) {
-			math_error("errno argument out of range");
-			/*NOTREACHED*/
-		}
+		newerr = (int) ztoi(vp->v_num->num);
 	}
 	olderr = set_errno(newerr);
 
@@ -4423,7 +4457,7 @@ f_errcount(int count, VALUE **vals)
 			math_error("errcount argument out of range");
 			/*NOTREACHED*/
 		}
-		newcount = z1tol(vp->v_num->num);
+		newcount = (int) ztoi(vp->v_num->num);
 	}
 	oldcount = set_errcount(newcount);
 
@@ -4436,23 +4470,21 @@ f_errcount(int count, VALUE **vals)
 static VALUE
 f_errmax(int count, VALUE **vals)
 {
-	int newmax, oldmax;
+	int oldmax;
 	VALUE *vp;
 	VALUE result;
 
-	newmax = -1;
+	oldmax = errmax;
 	if (count > 0) {
 		vp = vals[0];
 
-		/* arg must be an integer */
 		if (vp->v_type != V_NUM || qisfrac(vp->v_num) ||
-		qisneg(vp->v_num) || zge31b(vp->v_num->num)) {
-			math_error("errcount argument out of range");
-			/*NOTREACHED*/
-		}
-		newmax = z1tol(vp->v_num->num);
+				zge31b(vp->v_num->num))
+			fprintf(stderr,
+				 "Out-of-range arg for errmax ignored\n");
+		else
+			errmax = (int) ztoi(vp->v_num->num);
 	}
-	oldmax = set_errmax(newmax);
 
 	result.v_type = V_NUM;
 	result.v_num = itoq((long) oldmax);
@@ -4460,6 +4492,30 @@ f_errmax(int count, VALUE **vals)
 }
 
 
+static VALUE
+f_stoponerror(int count, VALUE **vals)
+{
+	int oldval;
+	VALUE *vp;
+	VALUE result;
+
+	oldval = stoponerror;
+	if (count > 0) {
+		vp = vals[0];
+
+		if (vp->v_type != V_NUM || qisfrac(vp->v_num) ||
+				zge31b(vp->v_num->num))
+			fprintf(stderr,
+				 "Out-of-range arg for stoponerror ignored\n");
+		else
+			stoponerror = (int) ztoi(vp->v_num->num);
+	}
+
+	result.v_type = V_NUM;
+	result.v_num = itoq((long) oldval);
+	return result;
+}
+
 static VALUE
 f_fclose(int count, VALUE **vals)
 {
@@ -5935,8 +5991,7 @@ f_putenv(int count, VALUE **vals)
 
 	/* return putenv result */
 	result.v_type = V_NUM;
-	result.v_num = itoq((long) putenv(putenv_str));
-	free(putenv_str);
+	result.v_num = itoq((long) malloced_putenv(putenv_str));
 	return result;
 }
 
@@ -6806,6 +6861,8 @@ static CONST struct builtin builtins[] = {
 	 "digit at specified decimal place of number"},
 	{"digits", 1, 1, 0, OP_NOP, f_digits, 0,
 	 "number of digits in number"},
+	{"display", 0, 1, 0, OP_NOP, 0, f_display,
+	 "number of decimal digits for displaying numbers"},
 	{"dp", 2, 2, 0, OP_NOP, 0, f_dp,
 	 "dot product of two vectors"},
 	{"epsilon", 0, 1, 0, OP_SETEPSILON, 0, 0,
@@ -7188,6 +7245,8 @@ static CONST struct builtin builtins[] = {
 	 "seed the random() function"},
 	{"ssq", 1, IN, 0, OP_NOP, 0, f_ssq,
 	 "sum of squares of values"},
+	{"stoponerror", 0, 1, 0, OP_NOP, 0, f_stoponerror,
+	 "assign value to stoponerror flag"},
 	{"str", 1, 1, 0, OP_NOP, 0, f_str,
 	 "simple value converted to string"},
 	{"strcat", 1,IN, 0, OP_NOP, 0, f_strcat,
@@ -7476,4 +7535,145 @@ showerrors(void)
 }
 
 
+/*
+ * malloced_putenv - Keep track of malloced environment variable storage
+ *
+ * given:
+ *	str	a malloced string which will be given to putenv
+ *
+ * returns:
+ *	putenv() return value
+ *
+ * NOTE: The caller MUST pass a string that the caller has previously malloced.
+ */
+static int
+malloced_putenv(char *str)
+{
+	char *value;	/* location of the value part of the str argument */
+	char *old_val;	/* previously stored (or inherited) env value */
+	int found_cnt;	/* number of active env_pool entries found */
+	struct env_pool *new;	/* new e_pool */
+	int i;
+
+	/*
+	 * firewall
+	 */
+	if (str == NULL) {
+		math_error("malloced_putenv given a NULL pointer!!");
+		/*NOTREACHED*/
+	}
+	if (str[0] == '=') {
+		math_error("malloced_putenv = is first character in string!!");
+		/*NOTREACHED*/
+	}
+
+	/*
+	 * determine the place where getenv would return
+	 */
+	value = strchr(str, '=');
+	if (value == NULL) {
+		math_error("malloced_putenv = not found in string!!");
+		/*NOTREACHED*/
+	}
+	++value;
+
+	/*
+	 * lookup for an existing environment value
+	 */
+	*(value-1) = '\0';
+	old_val = getenv(str);
+	*(value-1) = '=';
+
+	/*
+	 * If we have the value in our environment, look for a
+	 * previously malloced string and free it
+	 */
+	if (old_val != NULL && env_pool_cnt > 0) {
+		for (i=0, found_cnt=0;
+		     i < env_pool_max && found_cnt < env_pool_cnt;
+		     ++i) {
+
+			/* skip an unused entry */
+			if (e_pool[i].getenv == NULL) {
+			    continue;
+			}
+			++found_cnt;
+
+			/* look for the 1st match */
+			if (e_pool[i].getenv == value) {
+
+				/* found match, free the storage */
+				if (e_pool[i].putenv != NULL) {
+					free(e_pool[i].putenv);
+				}
+				e_pool[i].getenv = NULL;
+				--env_pool_cnt;
+				break;
+			}
+		}
+	}
+
+	/*
+	 * ensure that we have room in the e_pool
+	 */
+	if (env_pool_max == 0) {
+
+		/* allocate an initial pool (with one extra guard value) */
+		new = (struct env_pool *)malloc((ENV_POOL_CHUNK+1) *
+						sizeof(struct env_pool));
+		if (new == NULL) {
+			math_error("malloced_putenv malloc failed");
+			/*NOTREACHED*/
+		}
+		e_pool = new;
+		env_pool_max = ENV_POOL_CHUNK;
+		for (i=0; i <= ENV_POOL_CHUNK; ++i) {
+			e_pool[i].getenv = NULL;
+		}
+
+	} else if (env_pool_cnt >= env_pool_max) {
+
+		/* expand the current pool (with one extra guard value) */
+		new = (struct env_pool *)realloc(e_pool,
+					     (env_pool_max+ENV_POOL_CHUNK+1) *
+					     sizeof(struct env_pool));
+		if (new == NULL) {
+			math_error("malloced_putenv realloc failed");
+			/*NOTREACHED*/
+		}
+		e_pool = new;
+		for (i=env_pool_max; i <= env_pool_max + ENV_POOL_CHUNK; ++i) {
+			e_pool[i].getenv = NULL;
+		}
+		env_pool_max += ENV_POOL_CHUNK;
+	}
+
+	/*
+	 * store our data into the first e_pool entry
+	 */
+	for (i=0; i < env_pool_max; ++i) {
+
+		/* skip used entries */
+		if (e_pool[i].getenv != NULL) {
+			continue;
+		}
+
+		/* store in this free entry and stop looping */
+		e_pool[i].getenv = value;
+		e_pool[i].putenv = str;
+		++env_pool_cnt;
+		break;
+	}
+	if (i >= env_pool_max) {
+		math_error("malloced_putenv missed unused entry!!");
+		/*NOTREACHED*/
+	}
+
+	/*
+	 * finally, do the putenv action
+	 */
+	return putenv(str);
+}
+
+
 #endif /* FUNCLIST */

hash.c

@@ -604,7 +604,7 @@ hash_str(int type, char *str, HASH *state)
 	 */
 	return state;
 }
- 
+
 
 /*
  * hash_STR - hash a STRING

help/environment

@@ -8,7 +8,7 @@ Environment variables
 	If this variable does not exist, a compiled value
 	is used.  Typically compiled in value is:
 
-		    .:./lib:~/lib:${LIBDIR}/calc
+		    .:./lib:~/lib:${LIBDIR}/calc:${LIBDIR}/custom
 
 	where ${LIBDIR} is usually:
 

help/overview

@@ -44,7 +44,7 @@
 
     for and overview of the help system.  The command:
 
-	    help builtins
+	    help builtin
 
     provides information on built-in mathematical functions, whereas:
 
@@ -67,6 +67,10 @@
     It contains information about differences between C and calc
     that may surprize you.
 
+    To learn about calc library files that are shipped with calc, try:
+
+	    help stdlib
+
     A full and extensive overview of calc may be obtained by:
 
 	    help full

help/usage

@@ -2,7 +2,22 @@ Calc command line
 
     Calc has the following command line:
 
-	calc [-C] [-e] [-h] [-i] [-m mode] [-n] [-p] [-q] [-u] [calc_cmd ...]
+	calc [-c] [-C] [-d] [-e] [-h] [-i] [-m mode]
+	     [-n] [-p] [-q] [-u] [-v] [calc_cmd ...]
+
+	-c  Continue reading command lines even after an execution
+	    error has caused the abandonment of a line.
+
+	    For example:
+
+		calc read many_errors.cal
+
+	    will cause calc to abort on the first error, whereas:
+
+		calc -c read many_errors.cal
+
+	    will cause calc to try to process each line being read
+	    despite the errors that it encounters.
 
 	-C  Permit the execution of custom builtin functions.  Without
 	    this flag, calling the custom() builtin function will
@@ -12,6 +27,27 @@ Calc command line
 	    are non-standard and that are not portable.  Custom builtin
 	    functions are disabled by default for this reason.
 
+	-d  Disable the printing of the opening title.  The printing
+	    of library debug and informational messages is also disabled
+	    as if config("lib_debug",0) had been executed.
+
+	    For example:
+
+		calc 'read qtime; qtime(2)'
+
+	    will output something like:
+
+		qtime(utc_hr_offset) defined
+		It's nearly ten past six.
+
+	    whereas:
+
+		calc -d 'read qtime; qtime(2)'
+
+	    will just say:
+
+		It's nearly ten past six.
+
 	-e  Ignore any environment variables on startup.  The
 	    getenv() builtin will still return values, however.
 
@@ -19,7 +55,21 @@ Calc command line
 	    is equivalent to the calc command help help.  The help
 	    facility is disabled unless the mode is 5 or 7.  See -m.
 
-	-i  Do not about if the error count exceeds maxerr().
+	-i  Become interactive if possible.  Be default, if calc_cmd
+	    args are given, calc will execute them and exit.  This flag
+	    will cause calc to drop into interactive mode after the
+	    commands are executed.
+
+	    For example:
+
+		calc 2+5
+
+	    will print the value 7 and exit whereas:
+
+		calc -i 2+5
+
+	    will print the value 7 and prompt the user for more
+	    calc commands.
 
 	-m mode
 	   This flag sets the permission mode of calc.  It
@@ -38,7 +88,7 @@ Calc command line
 		6  do not execute any program
 		7  allow everything (default mode)
 
-	   If one wished to run calc from a privledged user, one
+	   If one wished to run calc from a privileged user, one
 	   might want to use -m 0 in an effort to make calc more
 	   secure.
 
@@ -46,7 +96,7 @@ Calc command line
 	   open.  Files already open are not effected. Thus if one
 	   wanted to use the -m 0 in an effort to make calc more
 	   secure, but still wanted to read and write a specific
-	   file, one might want to do:
+	   file, one might want to do in sh, ksh, bash-like shells:
 
 		     calc -m 0 3<a.file
 
@@ -59,25 +109,28 @@ Calc command line
 	   given.  The reading of key bindings is also disabled
 	   when the mode disables opening of files for reading.
 
-	-n  Use the new configutation defaults instead of the old
+	-n  Use the new configuration defaults instead of the old
 	    default classic defaults.  This flag as the same effect
 	    as executing config("all", "newcfg") at startup time.
 
 	-p  Pipe processing is enabled by use of -p.  For example:
 
-		     echo "print 2^21701-1, 2^23209-1" | calc -p | fizzbin
+		     calc -p '2^21701-1' | fizzbin
 
-	    In pipe mode, calc does not prompt, does not print
-	    leading tabs and does not print the initial header.
+	    In pipe mode, calc does not prompt, does not print leading
+	    tabs and does not print the initial header.  The -p flag
+	    overrides -i.
 
 	-q  Disable the use of the $CALCRC startup scripts.
 
 	-u  Disable buffering of stdin and stdout.
 
+	-v  Print calc version number and exit.
+
     Without `calc_cmd', calc operates interactively.  If one or more
     `calc_cmd' are given on the command line, calc will execute them and
-    exit.  The printing of leading tabs on output is disabled as if
-    config("tab",0) had been executed.
+    exit.  If -i is given, calc will attempt to become interactive
+    even of one or more `calc_cmd' are given on the command line.
 
     Normally on startup, calc attempts to execute a collection of
     library scripts.  The environment variable $CALCRC (if non-existent
@@ -98,7 +151,8 @@ Calc command line
 
     Calc treats all open files, other than stdin, stdout and
     stderr as files available for reading and writing. One may
-    present calc with an already open file in the following way:
+    present calc with an already open file using sh, ksh or bash-like
+    shells is to:
 
         calc 3<open_file 4<open_file2
 

input.c

@@ -311,7 +311,7 @@ f_open(char *name, char *mode)
 	 */
 	if (!allow_read && !allow_write) {
 		/* no reads and no writes means no opens! */
-		if (start_done) {
+		if (run_state > RUN_PRE_BEGIN) {
 			fprintf(stderr,
 				"open of %s mode %s - %s\n", name, mode,
 				"open for read or write disallowed by -m\n");
@@ -319,7 +319,7 @@ f_open(char *name, char *mode)
 		return NULL;
 	} else if (!allow_read && strchr(mode, 'r') != NULL) {
 		/* reading new files disallowed */
-		if (start_done) {
+		if (run_state > RUN_PRE_BEGIN) {
 			fprintf(stderr,
 				"open of %s mode %s - %s\n", name, mode,
 				"open for read disallowed by -m\n");
@@ -330,7 +330,7 @@ f_open(char *name, char *mode)
 		    strchr(mode, 'a') != NULL ||
 		    strchr(mode, '+') != NULL)) {
 		/* writing new files disallowed */
-		if (start_done) {
+		if (run_state > RUN_PRE_BEGIN) {
 			fprintf(stderr,
 				"open of %s mode %s - %s\n", name, mode,
 				"open for write disallowed by -m\n");

lib/Makefile

@@ -44,7 +44,7 @@ CALC_FILES= README bigprime.cal deg.cal ellip.cal lucas.cal lucas_chk.cal \
 	test2700.cal test3100.cal test3300.cal test3400.cal prompt.cal \
 	test3500.cal seedrandom.cal test4000.cal test4100.cal test4600.cal \
 	beer.cal hello.cal test5100.cal test5200.cal randombitrun.cal \
-	randomrun.cal xx_print.cal natnumset.cal
+	randomrun.cal xx_print.cal natnumset.cal qtime.cal
 
 # These files are found (but not built) in the distribution
 #

lib/README

@@ -1,10 +1,35 @@
-# Copyright (c) 1999 David I. Bell and Landon Curt Noll
-# Permission is granted to use, distribute, or modify this source,
-# provided that this copyright notice remains intact.
+To load a library, try:
 
-The following calc library files are provided because they serve as
-examples of how use the calc language, and/or because the authors thought
-them to be useful!
+    read filename
+
+You to not need to add the .cal extension to the filename.  Calc
+will search along the $CALCPATH (see ``help environment'').
+
+Normally a library will simply define some functions.  By default,
+most libraries will print out a short message when thei are read.
+For example:
+
+    > read lucas
+    lucas(h,n) defined
+    gen_u0(h,n,v1) defined
+    gen_v1(h,n) defined
+    ldebug(funct,str) defined
+
+will cause calc to load and execute the 'lucas.cal' library.
+Executing the library will cause several functions to be defined.
+Executing the lucas function
+
+    > lucas(149,60)
+	    1
+    > lucas(146,61)
+	    0
+
+shows that 149*2^60-1 is prime whereas 146*2^61-1 is not.
+
+=-=
+
+Calc library 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 send it to:
 
@@ -12,7 +37,7 @@ If you write something that you think is useful, please send it to:
 
 By convention, a lib file only defines and/or initializes functions,
 objects and variables.  (The regress.cal and testxxx.cal regression test
-suite is an exception.)  Also by convention, an additional usage message 
+suite is an exception.)  Also by convention, an additional usage message
 regarding important object and functions is printed.
 
 If a lib file needs to load another lib file, it should use the -once
@@ -63,6 +88,10 @@ something like:
 
 =-=
 
+The following is a brief description of some of the calc library files
+that are shipped with calc.  See above for example of how to read in
+and execute these files.
+
 beer.cal
 
     Calc's contribution to the 99 Bottles of Beer web page:
@@ -282,6 +311,13 @@ psqrt.cal
     Calculate square roots modulo a prime
 
 
+qtime.cal
+
+    qtime(utc_hr_offset)
+
+    Print the time as English sentence given the hours offset from UTC.
+
+
 quat.cal
 
     quat(a, b, c, d)
@@ -537,7 +573,7 @@ test3500.cal
     testh(str, n, N, verbose)
     test3500(verbose, n, N)
 
-    This script is used by regress.cal to test the functions frem, 
+    This script is used by regress.cal to test the functions frem,
     fcnt, gcdrem.
 
 test4000.cal
@@ -648,3 +684,9 @@ xx_print.cal
     error_print(a) defined
 
     Demo for the xx_print object routines.
+
+=-=
+
+# Copyright (c) 1999 David I. Bell and Landon Curt Noll
+# Permission is granted to use, distribute, or modify this source,
+# provided that this copyright notice remains intact.

lib/qtime.cal

@@ -0,0 +1,60 @@
+/*
+ * qtime - Display time as English sentence
+ *
+ * usage:
+ *	qtime(utc_hr_offset)
+ *
+ *	utc_hr_offset	Offset from UTC in hours.
+ *
+ * Written by: Klaus Alexander Seistrup <kseis@magnetic-ink.dk>
+ * With minor mods by: Landon Curt Noll <chongo@toad.com>
+ *
+ * See:
+ *	http://www.magnetic-ink.dk/download/qtime.html
+ *
+ * for examples of qtime() written on other languages.
+ */
+
+/*
+ * qtime - Display time as English sentence
+ */
+define qtime(utc_hr_offset)
+{
+    static mat hr[12] = {
+      "twelve", "one", "two", "three", "four", "five",
+      "six", "seven", "eight", "nine", "ten", "eleven"
+    };
+    static mat mn[7] = {
+      "", "five ", "ten ", "a quarter ", "twenty ", "twenty-five ", "half "
+    };
+    static mat ny[5] = {
+      "nearly ", "almost ", "", "just after ", "after "
+    };
+    static mat up[3] = {
+      "to ", "", "past "
+    };
+    local adj_mins = (((time() + utc_hr_offset*3600) % 86400) + 30) // 60 + 27;
+    local hours	= (adj_mins // 60) % 12;
+    local minutes = adj_mins % 60;
+    local almost =  minutes % 5;
+    local divisions = (minutes // 5) - 5;
+    local to_past_idx =  divisions > 0 ? 1 : 0;
+
+    if (divisions < 0) {
+	divisions = -divisions;
+	to_past_idx = -1;
+    }
+    ++to_past_idx;
+
+    /*
+     * Print the English sentence
+     *
+     * We avoid forward and back quotes just to show that the char()
+     * builtin function can be used in conjunction with a printf.
+     */
+    printf("It%cs %s%s%s%s",
+	    char(0x27), ny[almost], mn[divisions], up[to_past_idx], hr[hours]);
+    if (divisions == 0)
+	printf(" o%cclock", char(0x27));
+    printf (".\n");
+}

lib/regress.cal

@@ -22,13 +22,13 @@ prob = 0;				/* clear problem counter */
 
 global junk;				/* throw away value */
 junk = errcount(0);			/* clear error count */
-junk = errmax(0x7fffffff);		/* set maximum error very high */
+junk = errmax(-1);			/* prevent errcount from abouting */
 
 global ecnt;				/* expected value of errcount() */
 ecnt = 0;				/* clear expected errcount() value */
 
 initcfg = config("all", "oldstd");	/* set config to startup default */
-initcfg = config("lib_debug", -1);	/* disable lib startup messages */
+initcfg = config("lib_debug", -4);	/* disable lib startup messages */
 initcfg = config("calc_debug", 1);	/* enable more internal debugging */
 initcfg = config("all");		/* save state for later use */
 
@@ -4223,7 +4223,7 @@ define test_random()
 
 	/* test range interface some more */
 	tmp = srandom(state1);
-	print				  '5369: tmp = srandom(0)';
+	print				  '5369: tmp = srandom(state1)';
 	vrfy(random(-46,46) == -0x7,	  '5370: random(-46,46) == -0x7');
 	vrfy(random(21701,23209) == 23061,
 		'5371: random(21701,23209) == 23061');
@@ -7468,7 +7468,9 @@ read -once unitfrac;
 print	'9826: read -once unitfrac';
 read -once varargs;
 print	'9827: read -once varargs';
-print	'9828: Ending read of selected calc libs';
+read -once qtime;
+print	'9828: read -once qtime';
+print	'9829: Ending read of selected calc libs';
 
 
 /*

lib_calc.c

@@ -63,8 +63,8 @@ int new_std = FALSE;	/* TRUE (-n) => use newstd configuration */
 int abortlevel;		/* current level of aborts */
 BOOL inputwait;		/* TRUE if in a terminal input wait */
 jmp_buf jmpbuf;		/* for errors */
-int start_done = FALSE;	/* TRUE => start up processing finished */
-char *program = "calc";	/* our name */
+run run_state = RUN_UNKNOWN;	/* calc startup and run state */
+char *program = "calc";		/* our name */
 char cmdbuf[MAXCMD+1+1+1];	/* command line expression + "\n\0" + guard */
 
 
@@ -82,7 +82,9 @@ int allow_exec = TRUE;	/* FALSE => may not execute any commands */
 int p_flag = FALSE;	/* TRUE => pipe mode */
 int q_flag = FALSE;	/* TRUE => don't execute rc files */
 int u_flag = FALSE;	/* TRUE => unbuffer stdin and stdout */
-
+int d_flag = FALSE;	/* TRUE => disable heading, lib_debug == 0 */
+int c_flag = FALSE;	/* TRUE => continue on error if permitted */
+int i_flag = FALSE;	/* TRUE => go interactive if permitted */
 
 /*
  * global values
@@ -94,11 +96,12 @@ char *home;		/* $HOME or default */
 char *pager;		/* $PAGER or default */
 char *shell;		/* $SHELL or default */
 int stdin_tty = FALSE;	/* TRUE if stdin is a tty */
-int interactive = FALSE; /* TRUE if interactive session (no cmd args) */
-int post_init = FALSE;	/* TRUE setjmp for math_error is readready */
+int havecommands = FALSE;	/* TRUE if have one or more cmd args */
+int stoponerror = FALSE;	/* >0 => stop, <0 => continue on error */
+int post_init = FALSE;	/* TRUE setjmp for math_error is ready */
 
 int no_env = FALSE;	/* TRUE (-e) => ignore env vars on startup */
-int ign_errmax = FALSE;	/* TRUE (-i) => ignore when errcount exceeds errmax */
+int errmax = ERRMAX;	/* if >= 0,  maximum value for errcount */
 
 NUMBER *epsilon_default;	/* default allowed error for float calcs */
 
@@ -155,6 +158,20 @@ libcalc_call_me_first(void)
 		conf = config_copy(&oldstd);
 	}
 
+	/*
+	 * -d turns off lib_debug
+	 */
+	if (d_flag) {
+		conf->lib_debug = 0;
+	}
+
+	/*
+	 * -p turns off tab
+	 */
+	if (p_flag) {
+		conf->tab_ok = 0;
+	}
+
 	/*
 	 * initialize
 	 */
@@ -163,6 +180,7 @@ libcalc_call_me_first(void)
 	/*
 	 * ready to rock & roll ..
 	 */
+	run_state = RUN_PRE_BEGIN;
 	init_done = 1;
 	return;
 }
@@ -229,10 +247,6 @@ reinitialize(void)
 	math_setfp(stdout);
 	resetscopes();
 	resetinput();
-	if (q_flag == FALSE && allow_read) {
-		q_flag = TRUE;
-		runrcfiles();
-	}
 	(void) openterminal();
 }
 

opcodes.c

@@ -32,7 +32,6 @@ static VALUE oldvalue;			/* previous calculation value */
 static BOOL saveval = TRUE;		/* to enable or disable saving */
 static int calc_errno;			/* most recent error-number */
 static int errcount;			/* counts calls to error_value */
-static int errmax = ERRMAX;		/* maximum for errcount without abort */
 static BOOL go;
 
 /*
@@ -2467,7 +2466,7 @@ o_return(void)
 
 /*ARGSUSED*/
 static void
-o_jumpeq(FUNC *fp, BOOL *dojump)
+o_jumpz(FUNC *fp, BOOL *dojump)
 {
 	VALUE *vp;
 	int i;			/* result of comparison */
@@ -2491,7 +2490,7 @@ o_jumpeq(FUNC *fp, BOOL *dojump)
 
 /*ARGSUSED*/
 static void
-o_jumpne(FUNC *fp, BOOL *dojump)
+o_jumpnz(FUNC *fp, BOOL *dojump)
 {
 	VALUE *vp;
 	int i;			/* result of comparison */
@@ -2513,6 +2512,20 @@ o_jumpne(FUNC *fp, BOOL *dojump)
 }
 
 
+/*
+ * jumpnn invokes a jump if top value points to a null value
+ */
+/*ARGSUSED*/
+static void
+o_jumpnn(FUNC *fp, BOOL *dojump)
+{
+	if (stack->v_addr->v_type) {
+		*dojump = TRUE;
+		stack--;
+	}
+}
+
+
 /*ARGSUSED*/
 static void
 o_condorjump(FUNC *fp, BOOL *dojump)
@@ -3111,7 +3124,8 @@ o_quit(FUNC *fp, long index)
 		s = findstring(index);
 		cp = s->s_str;
 	}
-	if ((fp->f_name[0] == '*') && (fp->f_name[1] == '\0')) {
+	if (inputisterminal() && (fp->f_name[0] == '*')
+			 && (fp->f_name[1] == '\0')) {
 		if (cp)
 			printf("%s\n", cp);
 		hist_term();
@@ -3126,6 +3140,8 @@ o_quit(FUNC *fp, long index)
 		printf("%s\n", cp);
 	else
 		printf("Quit statement executed\n");
+	if (!inputisterminal() && fp->f_name[0] == '*')
+		closeinput();
 	go = FALSE;
 }
 
@@ -3243,7 +3259,7 @@ error_value(int e)
 	calc_errno = e;
 	if (e > 0)
 		errcount++;
-	if (errcount > errmax && !ign_errmax) {
+	if (errmax >= 0 && errcount > errmax) {
 		math_error("Error %d caused errcount to exceed errmax", e);
 		/*NOTREACHED*/
 	}
@@ -3281,21 +3297,6 @@ set_errcount(int e)
 }
 
 
-/*
- * set_errno - return and set errno
- */
-int
-set_errmax(int e)
-{
-	int res;
-
-	res = errmax;
-	if (e >= 0)
-		errmax = e;
-	return res;
-}
-
-
 /*
  * Fill a newly created matrix at v1 with copies of value at v2.
  */
@@ -3427,8 +3428,8 @@ static struct opcode opcodes[MAX_OPCODE+1] = {
 	{o_duplicate,	OPNUL,  "DUPLICATE"},	/* duplicate top value */
 	{o_pop,		OPNUL,  "POP"},		/* pop top value */
 	{o_return,	OPRET,  "RETURN"},	/* return value of function */
-	{o_jumpeq,	OPJMP,  "JUMPEQ"},	/* jump if value zero */
-	{o_jumpne,	OPJMP,  "JUMPNE"},	/* jump if value nonzero */
+	{o_jumpz,	OPJMP,  "JUMPZ"},	/* jump if value zero */
+	{o_jumpnz,	OPJMP,  "JUMPNZ"},	/* jump if value nonzero */
 	{o_jump,	OPJMP,  "JUMP"},	/* jump unconditionally */
 	{o_usercall,	OPTWO,  "USERCALL"},	/* call a user function */
 	{o_getvalue,	OPNUL,  "GETVALUE"},	/* convert address to value */
@@ -3531,7 +3532,8 @@ static struct opcode opcodes[MAX_OPCODE+1] = {
 	{o_hashop,	OPNUL,	"HASHOP"},	/* binary hash op */
 	{o_backslash,	OPNUL,	"BACKSLASH"},	/* unary backslash op */
 	{o_setminus,	OPNUL,	"SETMINUS"},	/* binary backslash op */
-	{o_plus,	OPNUL,	"PLUS"}		/* unary + op */
+	{o_plus,	OPNUL,	"PLUS"},	/* unary + op */
+	{o_jumpnn,	OPJMP,	"JUMPNN"}	/* jump if non-null */
 };
 
 
@@ -3695,7 +3697,8 @@ calculate(FUNC *fp, int argcount)
 		freevalue(&locals[i]);
 	if (locals != localtable)
 		free(locals);
-	printf("\t\"%s\": line %ld\n", funcname, funcline);
+	if (conf->calc_debug & 2)
+		printf("\t\"%s\": line %ld\n", funcname, funcline);
 	while (stack > beginstack)
 		freevalue(stack--);
 	funcname = oldname;
@@ -3751,11 +3754,11 @@ dumpop(unsigned long *pc)
 		case OP_INDEXADDR:
 			printf(" %ld %ld\n", pc[0], pc[1]);
 			return 3;
-		case OP_PRINT: case OP_JUMPEQ: case OP_JUMPNE: case OP_JUMP:
+		case OP_PRINT: case OP_JUMPZ: case OP_JUMPNZ: case OP_JUMP:
 		case OP_CONDORJUMP: case OP_CONDANDJUMP: case OP_CASEJUMP:
 		case OP_INITSTATIC: case OP_MATCREATE: case OP_OBJCREATE:
 		case OP_SHOW: case OP_ELEMINIT: case OP_ELEMADDR:
-		case OP_ELEMVALUE:
+		case OP_ELEMVALUE: case OP_JUMPNN:
 			printf(" %ld\n", *pc);
 			return 2;
 		case OP_NUMBER: case OP_IMAGINARY:

opcodes.h

@@ -38,8 +38,8 @@
 #define OP_DUPLICATE	23L	/* duplicate top value on stack */
 #define OP_POP		24L	/* pop top value from stack */
 #define OP_RETURN	25L	/* return value of function */
-#define OP_JUMPEQ	26L	/* jump if top value is zero */
-#define OP_JUMPNE	27L	/* jump if top value is nonzero */
+#define OP_JUMPZ	26L	/* jump if top value is zero */
+#define OP_JUMPNZ	27L	/* jump if top value is nonzero */
 #define OP_JUMP		28L	/* jump unconditionally */
 #define OP_USERCALL	29L	/* call a user-defined function */
 #define OP_GETVALUE	30L	/* convert address to value */
@@ -143,7 +143,8 @@
 #define OP_BACKSLASH	128L	/* unary backslash */
 #define OP_SETMINUS	129L	/* binary backslash */
 #define OP_PLUS		130L	/* unary + */
-#define MAX_OPCODE	130L	/* highest legal opcode */
+#define OP_JUMPNN	131L	/* jump if top value is non-null */
+#define MAX_OPCODE	131L	/* highest legal opcode */
 
 
 /*

string.c

@@ -1142,7 +1142,7 @@ initstrings(void)
 
 /*
  * addstring is called only from token.c
- * When called, len is length if string including '\0'
+ * When called, len is length of string including '\0'
  */
 long
 addstring(char *str, long len)

token.c

@@ -458,6 +458,7 @@ eatstring(int quotechar)
 		}
 		memcpy(str + totlen, buf, len);
 		totlen += len;
+		len = 0;
 	    }
 	}
   	curtoken.t_strindex = addstring(str, totlen + len);
@@ -643,6 +644,10 @@ scanerror(int skip, char *fmt, ...)
 	va_end(ap);
 	fprintf(stderr, "%s\n", buf);
 
+	/* bail out if continuation not permitted */
+	if ((!c_flag && !stoponerror) || stoponerror > 0)
+		longjmp(jmpbuf, 1);
+
 	/* bail out if too many errors */
 	if (conf->maxscancount > 0 && errorcount > conf->maxscancount) {
 		fputs("Too many scan errors, compilation aborted.\n", stderr);

value.h

@@ -213,7 +213,6 @@ extern BOOL precvalue(VALUE *v1, VALUE *v2);
 extern VALUE error_value(int e);
 extern int set_errno(int e);
 extern int set_errcount(int e);
-extern int set_errmax(int e);
 extern long countlistitems(LIST *lp);
 extern void addlistitems(LIST *lp, VALUE *vres);
 extern void addlistinv(LIST *lp, VALUE *vres);

version.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997 David I. Bell
+ * Copyright (c) 1999 David I. Bell
  * Permission is granted to use, distribute, or modify this source,
  * provided that this copyright notice remains intact.
  *
@@ -12,7 +12,7 @@
 #define MAJOR_VER	2	/* major version */
 #define MINOR_VER	11	/* minor version */
 #define MAJOR_PATCH	0	/* patch level or 0 if no patch */
-#define MINOR_PATCH	"6"	/* test number or empty string if no patch */
+#define MINOR_PATCH	"7.3"	/* test number or empty string if no patch */
 
 /*
  * calc version constants
@@ -80,7 +80,3 @@ version(void)
 	 */
 	return stored_version;
 }
-
-
-
-/* END CODE */

zrandom.c

@@ -1571,6 +1571,12 @@ static RANDOM random_pregen[BLUM_PREGEN] = {
 };
 
 
+/*
+ * forward static declarations
+ */
+static void zfree_random(ZVALUE z);
+
+
 /*
  * zsrandom1 - seed the Blum generator 1 arg style
  *
@@ -1647,7 +1653,7 @@ zsrandom1(CONST ZVALUE seed, BOOL need_ret)
 		do {
 			/* free temp storage */
 			if (last_r.v != NULL) {
-				zfree(last_r);
+				zfree_random(last_r);
 			}
 
 			/*
@@ -1657,10 +1663,10 @@ zsrandom1(CONST ZVALUE seed, BOOL need_ret)
 			last_r = r;
 			zsquaremod(last_r, blum.n, &r);
 		} while (zrel(r, last_r) > 0);
-		zfree(blum.r);
+		zfree_random(blum.r);
 		blum.r = r;
 		/* free temp storage */
-		zfree(last_r);
+		zfree_random(last_r);
 
 	/*
 	 * reserved seed
@@ -1741,7 +1747,7 @@ zsrandom2(CONST ZVALUE seed, CONST ZVALUE newn)
 			math_error("srandom small newn must be [1,20]");
 			/*NOTREACHED*/
 		}
-		zfree(blum.n);
+		zfree_random(blum.n);
 		zcopy(random_pregen[set-1].n, &blum.n);
 		blum.loglogn = random_pregen[set-1].loglogn;
 		blum.mask = random_pregen[set-1].mask;
@@ -1750,7 +1756,7 @@ zsrandom2(CONST ZVALUE seed, CONST ZVALUE newn)
 		 * reset initial seed as well if seed is 0
 		 */
 		if (ziszero(seed)) {
-			zfree(blum.r);
+			zfree_random(blum.r);
 			zcopy(random_pregen[set-1].r, &blum.r);
 
 		/*
@@ -1785,7 +1791,7 @@ zsrandom2(CONST ZVALUE seed, CONST ZVALUE newn)
 		 * of two primes.
 		 */
 		/* load modulus */
-		zfree(blum.n);
+		zfree_random(blum.n);
 		zcopy(newn, &blum.n);
 
 		/*
@@ -1894,11 +1900,11 @@ zsrandom4(CONST ZVALUE seed, CONST ZVALUE ip, CONST ZVALUE iq, long trials)
 	/*
 	 * form the Blum modulus
 	 */
-	zfree(blum.n);
+	zfree_random(blum.n);
 	zmul(p, q, &blum.n);
 	/* free temp storage */
-	zfree(p);
-	zfree(q);
+	zfree_random(p);
+	zfree_random(q);
 
 	/*
 	 * form the loglogn and mask
@@ -2045,7 +2051,7 @@ zrandomskip(long cnt)
 
 		/* turn the Blum-Blum-Shub crank */
 		zsquaremod(blum.r, blum.n, &new_r);
-		zfree(blum.r);
+		zfree_random(blum.r);
 		blum.r = new_r;
 		cnt -= blum.loglogn;
 	}
@@ -2057,7 +2063,7 @@ zrandomskip(long cnt)
 
 		/* turn the Blum-Blum-Shub crank */
 		zsquaremod(blum.r, blum.n, &new_r);
-		zfree(blum.r);
+		zfree_random(blum.r);
 		blum.r = new_r;
 
 		/* fill the buffer with the unused bits */
@@ -2197,7 +2203,7 @@ zrandom(long cnt, ZVALUE *res)
 		 * turn the Blum-Blum-Shub crank
 		 */
 		zsquaremod(blum.r, blum.n, &new_r);
-		zfree(blum.r);
+		zfree_random(blum.r);
 		blum.r = new_r;
 		/* peal off the bottom loglogn bits */
 		blum.buffer = (blum.r.v[0] & mask);
@@ -2228,7 +2234,7 @@ zrandom(long cnt, ZVALUE *res)
 	 */
 	/* turn the Blum-Blum-Shub crank */
 	zsquaremod(blum.r, blum.n, &new_r);
-	zfree(blum.r);
+	zfree_random(blum.r);
 	blum.r = new_r;
 	/* peal off the bottom loglogn bits */
 	blum.buffer = (blum.r.v[0] & mask);
@@ -2282,13 +2288,13 @@ zrandomrange(CONST ZVALUE low, CONST ZVALUE high, ZVALUE *res)
 	 */
 	zsub(high, low, &range);
 	if (zisone(range)) {
-		zfree(range);
+		zfree_random(range);
 		*res = low;
 		return;
 	}
 	zsub(range, _one_, &rangem1);
 	bitlen = 1+zhighbit(rangem1);
-	zfree(rangem1);
+	zfree_random(rangem1);
 
 	/*
 	 * generate a random value between [0, diff)
@@ -2302,7 +2308,7 @@ zrandomrange(CONST ZVALUE low, CONST ZVALUE high, ZVALUE *res)
 	rval.v = NULL;
 	do {
 		if (rval.v != NULL) {
-			zfree(rval);
+			zfree_random(rval);
 		}
 		zrandom(bitlen, &rval);
 	} while (zrel(rval, range) >= 0);
@@ -2312,8 +2318,8 @@ zrandomrange(CONST ZVALUE low, CONST ZVALUE high, ZVALUE *res)
 	 * which is the range [low, high)
 	 */
 	zadd(rval, low, res);
-	zfree(rval);
-	zfree(range);
+	zfree_random(rval);
+	zfree_random(range);
 }
 
 
@@ -2341,8 +2347,8 @@ irandom(long s)
 	itoz(s, &z1);
 	zrandomrange(_zero_, z1, &z2);
 	res = ztoi(z2);
-	zfree(z1);
-	zfree(z2);
+	zfree_random(z1);
+	zfree_random(z2);
 	return res;
 }
 
@@ -2377,12 +2383,20 @@ randomcopy(CONST RANDOM *state)
 	if (state->r.v == NULL) {
 		ret->r.v = NULL;
 	} else {
-		zcopy(state->r, &ret->r);
+		if (state->r.v == h_rdefvec) {
+			ret->r.v = state->r.v;
+		} else {
+			zcopy(state->r, &ret->r);
+		}
 	}
 	if (state->n.v == NULL) {
 		ret->n.v = NULL;
 	} else {
-		zcopy(state->n, &ret->n);
+		if (state->n.v == h_ndefvec) {
+			ret->n.v = state->n.v;
+		} else {
+			zcopy(state->n, &ret->n);
+		}
 	}
 
 	/*
@@ -2414,12 +2428,8 @@ randomfree(RANDOM *state)
 	}
 
 	/* free the values */
-	if (state->n.v != h_ndefvec) {
-		zfree(state->n);
-	}
-	if (state->r.v != h_rdefvec) {
-		zfree(state->r);
-	}
+	zfree_random(state->n);
+	zfree_random(state->r);
 
 	/* free it if it is not pre-defined */
 	state->seeded = 0;
@@ -2505,9 +2515,43 @@ randomprint(CONST RANDOM *state, int flags)
 void
 random_libcalc_cleanup(void)
 {
-	/* free if we are seeded now */
-	if (blum.seeded) {
-		randomfree(&blum);
+	/* free our state - let zfree_random protect the default state */
+	randomfree(&blum);
+	return;
+}
+
+
+/*
+ * zfree_random - perform a zfree if we are not trying to free static data
+ *
+ * given:
+ *	z	the ZVALUE to zfree(z) if not pointing to static data
+ */
+static void
+zfree_random(ZVALUE z)
+{
+	if (z.v != h_ndefvec && z.v != h_rdefvec && z.v != h_rdefvec_2 &&
+	    z.v != h_nvec01 && z.v != h_rvec01 &&
+	    z.v != h_nvec02 && z.v != h_rvec02 &&
+	    z.v != h_nvec03 && z.v != h_rvec03 &&
+	    z.v != h_nvec04 && z.v != h_rvec04 &&
+	    z.v != h_nvec05 && z.v != h_rvec05 &&
+	    z.v != h_nvec06 && z.v != h_rvec06 &&
+	    z.v != h_nvec07 && z.v != h_rvec07 &&
+	    z.v != h_nvec08 && z.v != h_rvec08 &&
+	    z.v != h_nvec09 && z.v != h_rvec09 &&
+	    z.v != h_nvec10 && z.v != h_rvec10 &&
+	    z.v != h_nvec11 && z.v != h_rvec11 &&
+	    z.v != h_nvec12 && z.v != h_rvec12 &&
+	    z.v != h_nvec13 && z.v != h_rvec13 &&
+	    z.v != h_nvec14 && z.v != h_rvec14 &&
+	    z.v != h_nvec15 && z.v != h_rvec15 &&
+	    z.v != h_nvec16 && z.v != h_rvec16 &&
+	    z.v != h_nvec17 && z.v != h_rvec17 &&
+	    z.v != h_nvec18 && z.v != h_rvec18 &&
+	    z.v != h_nvec19 && z.v != h_rvec19 &&
+	    z.v != h_nvec20 && z.v != h_rvec20) {
+		zfree(z);
 	}
 	return;
 }