view lib/memcmp2.c @ 14298:f0c82d0c08e6

New module 'wcscspn'. * modules/wcscspn: New file. * lib/wchar.in.h (wcscspn): New declaration. * lib/wcscspn.c: New file. * lib/wcscspn-impl.h: New file, from libutf8 with modifications. * m4/wcscspn.m4: New file. * m4/wchar_h.m4 (gl_WCHAR_H): Test whether wcscspn is declared. (gl_WCHAR_H_DEFAULTS): Initialize GNULIB_WCSCSPN, HAVE_WCSCSPN. * modules/wchar (Makefile.am): Substitute GNULIB_WCSCSPN, HAVE_WCSCSPN. * tests/test-wchar-c++.cc: Test the declaration of wcscspn. * doc/posix-functions/wcscspn.texi: Mention the new module.
author Bruno Haible <bruno@clisp.org>
date Sun, 06 Feb 2011 14:10:45 +0100
parents 97fc9a21a8fb
children b427a1938336
line wrap: on
line source

/* Compare two memory areas with possibly different lengths.
   Copyright (C) 2009-2011 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify it
   under the terms of the GNU Lesser General Public License as published
   by the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <config.h>

/* Specification.  */
#include "memcmp2.h"

#include <string.h>

int
memcmp2 (const char *s1, size_t n1, const char *s2, size_t n2)
{
  int cmp = memcmp (s1, s2, n1 <= n2 ? n1 : n2);
  if (cmp == 0)
    {
      if (n1 < n2)
        cmp = -1;
      else if (n1 > n2)
        cmp = 1;
    }
  return cmp;
}