ARM: Consolidate with generic unwinder wrapper code
[glibc.git] / string / strcmp.c
blob4d4c044660767cc7748424bcfcaf082625e80915
1 /* Copyright (C) 1991-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
18 #include <string.h>
20 #undef strcmp
22 /* Compare S1 and S2, returning less than, equal to or
23 greater than zero if S1 is lexicographically less than,
24 equal to or greater than S2. */
25 int
26 strcmp (const char *p1, const char *p2)
28 const unsigned char *s1 = (const unsigned char *) p1;
29 const unsigned char *s2 = (const unsigned char *) p2;
30 unsigned char c1, c2;
34 c1 = (unsigned char) *s1++;
35 c2 = (unsigned char) *s2++;
36 if (c1 == '\0')
37 return c1 - c2;
39 while (c1 == c2);
41 return c1 - c2;
43 libc_hidden_builtin_def (strcmp)