explain_strtoull_or_die(3)
NAME
explain_strtoull_or_die - convert string to integer and report errors
SYNOPSIS
#include <libexplain/strtoull.h> unsigned long long explain_strtoull_or_die(const char *nptr, char **endptr, int base); unsigned long long explain_strtoull_on_error(const char *nptr, char **endptr, int base))
DESCRIPTION
The explain_strtoull_or_die function is used to call the strtoull(3)
system call. On failure an explanation will be printed to stderr,
obtained from the explain_strtoull(3) function, and then the process
terminates by calling exit(EXIT_FAILURE).
The explain_strtoull_on_error function is used to call the strtoull(3)
system call. On failure an explanation will be printed to stderr,
obtained from the explain_strtoull(3) function, but still returns to
the caller.
- nptr The nptr, exactly as to be passed to the strtoull(3) system
- call.
- endptr The endptr, exactly as to be passed to the strtoull(3) system
- call.
- base The base, exactly as to be passed to the strtoull(3) system
- call.
RETURN VALUE
The explain_strtoull_or_die function only returns on success, see strtoull(3) for more information. On failure, prints an explanation and
exits, it does not return.
The explain_strtoull_on_error function always returns the value return
by the wrapped strtoull(3) system call.
EXAMPLE
- The explain_strtoull_or_die function is intended to be used in a fashion similar to the following example:
- unsigned long long result = explain_strtoull_or_die(nptr, endptr, base);
SEE ALSO
- strtoull(3)
- convert a string to an unsigned long integer
- explain_strtoull(3)
- explain strtoull(3) errors
- exit(2) terminate the calling process
COPYRIGHT
- libexplain version 0.37
Copyright (C) 2009 Peter Miller