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glibc  2.9
wcscmp.c
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00001 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <wchar.h>
00021 
00022 
00023 /* Compare S1 and S2, returning less than, equal to or
00024    greater than zero if S1 is lexicographically less than,
00025    equal to or greater than S2.     */
00026 int
00027 wcscmp (s1, s2)
00028      const wchar_t *s1;
00029      const wchar_t *s2;
00030 {
00031   wint_t c1, c2;
00032 
00033   do
00034     {
00035       c1 = (wint_t) *s1++;
00036       c2 = (wint_t) *s2++;
00037       if (c1 == L'\0')
00038        return c1 - c2;
00039     }
00040   while (c1 == c2);
00041 
00042   return c1 - c2;
00043 }
00044 libc_hidden_def (wcscmp)