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add errsym builtin function

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NOTE: errstr was renamed to errsym.

Added errsym builtin function.  The errsym(errnum | "E_STRING")
builtin, , when given a valid integer errnum that corresponds to a
calc error condition, will return an E_STRING string, AND when given
a valid E_STRING string that is associated with a calc error
condition, will return errnum integer that corresponds to a calc
error condition.

Supplying a non-integer numeric errnum code to error(), errno(),
strerror(), or errsym() will result in an error.
This commit is contained in:
Landon Curt Noll
2023-09-20 22:22:49 -07:00
parent 120527d375
commit 1a898caf3f
16 changed files with 366 additions and 55 deletions
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@@ -329,6 +329,16 @@ The following are the changes from calc version 2.14.3.5 to date:
computation error related E_STRING strings. Now related sets of
E_STRING strings end in _ (underscore) followed by digits.
Added errsym builtin function. The errsym(errnum | "E_STRING")
builtin, , when given a valid integer errnum that corresponds to a
calc error condition, will return an E_STRING string, AND when given
a valid E_STRING string that is associated with a calc error
condition, will return errnum integer that corresponds to a calc
error condition.
Supplying a non-integer numeric errnum code to error(), errno(),
strerror(), or errsym() will result in an error.
The following are the changes from calc version 2.14.3.4 to 2.14.3.5: