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