| /* Copyright (C) 1991-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library 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 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <string.h> |
| |
| #undef strcmp |
| |
| #ifndef STRCMP |
| # define STRCMP strcmp |
| #endif |
| |
| /* Compare S1 and S2, returning less than, equal to or |
| greater than zero if S1 is lexicographically less than, |
| equal to or greater than S2. */ |
| int |
| STRCMP (const char *p1, const char *p2) |
| { |
| const unsigned char *s1 = (const unsigned char *) p1; |
| const unsigned char *s2 = (const unsigned char *) p2; |
| unsigned char c1, c2; |
| |
| do |
| { |
| c1 = (unsigned char) *s1++; |
| c2 = (unsigned char) *s2++; |
| if (c1 == '\0') |
| return c1 - c2; |
| } |
| while (c1 == c2); |
| |
| return c1 - c2; |
| } |
| libc_hidden_builtin_def (strcmp) |
