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improve calc error code system

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Changed calc_errno a global int variable so that is may be directly
accessed by libcalc users.

Further improve help files for help/errno, help/error, help/newerror,
help/stoponerror and help/strerror by adding to documentation
of the calc error code system as well as libcalc interface
where applicable.
This commit is contained in:
Landon Curt Noll
2023-09-12 16:06:27 -07:00
parent 19819340ff
commit 229a60e4d5
8 changed files with 162 additions and 80 deletions
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calc.h
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@@ -222,6 +222,7 @@ EXTERN int abortlevel; /* current level of aborts */
EXTERN bool inputwait; /* true if in a terminal input wait */
EXTERN VALUE *stack; /* execution stack */
EXTERN int dumpnames; /* true => dump names rather than indices */
EXTERN int calc_errno; /* global calc_errno value */
EXTERN char *calcpath; /* $CALCPATH or default */
EXTERN char *calcrc; /* $CALCRC or default */