long explain_strtol_or_die(const char *nptr, char **endptr, int base);
long explain_strtol_on_error(const char *nptr, char **endptr, int base))
DESCRIPTION
The explain_strtol_or_die function is used to call the
strtol(3) system call. On failure an explanation will be printed to
stderr, obtained from the explain_strtol(3) function, and
then the process terminates by calling exit(EXIT_FAILURE).
The explain_strtol_on_error function is used to call the
strtol(3) system call. On failure an explanation will be printed to
stderr, obtained from the explain_strtol(3) function, but
still returns to the caller.
nptr
The nptr, exactly as to be passed to the strtol(3) system call.
endptr
The endptr, exactly as to be passed to the strtol(3) system call.
base
The base, exactly as to be passed to the strtol(3) system call.
RETURN VALUE
The explain_strtol_or_die function only returns on success, see
strtol(3) for more information. On failure, prints an explanation
and exits, it does not return.
The explain_strtol_on_error function always returns the value
return by the wrapped strtol(3) system call.
EXAMPLE
The explain_strtol_or_die function is intended to be used in a
fashion similar to the following example:
long result = explain_strtol_or_die(nptr, endptr, base);