explain_strtold_or_die man page

explain_strtold_or_die — convert string to number and report errors

Synopsis

#include <libexplain/strtold.h>

long double explain_strtold_or_die(const char *nptr, char **endptr);
long double explain_strtold_on_error(const char *nptr, char **endptr))

Description

The explain_strtold_or_die function is used to call the strtold(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_strtold(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

The explain_strtold_on_error function is used to call the strtold(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_strtold(3) function, but still returns to the caller.

nptr
The nptr, exactly as to be passed to the strtold(3) system call.
endptr
The endptr, exactly as to be passed to the strtold(3) system call.

Return Value

The explain_strtold_or_die function only returns on success, see strtold(3) for more information. On failure, prints an explanation and exits, it does not return.

The explain_strtold_on_error function always returns the value return by the wrapped strtold(3) system call.

Example

The explain_strtold_or_die function is intended to be used in a fashion similar to the following example:

long double result = explain_strtold_or_die(nptr, endptr);

See Also

strtold(3)
convert ASCII string to floating‐point number
explain_strtold(3)
explain strtold(3) errors
exit(2)
terminate the calling process

Referenced By

explain(3), explain_strtold(3).