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[glibc.git] / wcsmbs / wcscmp.c
blob939dc3644ca6992763e9e589fb9dffd0329a462b
1 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <wchar.h>
23 /* Compare S1 and S2, returning less than, equal to or
24 greater than zero if S1 is lexicographically less than,
25 equal to or greater than S2. */
26 int
27 wcscmp (s1, s2)
28 const wchar_t *s1;
29 const wchar_t *s2;
31 wint_t c1, c2;
35 c1 = (wint_t) *s1++;
36 c2 = (wint_t) *s2++;
37 if (c1 == L'\0')
38 return c1 - c2;
40 while (c1 == c2);
42 return c1 - c2;