diff options
Diffstat (limited to 'string/strncmp.c')
-rw-r--r-- | string/strncmp.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/string/strncmp.c b/string/strncmp.c deleted file mode 100644 index c41e120091..0000000000 --- a/string/strncmp.c +++ /dev/null @@ -1,74 +0,0 @@ -/* Copyright (C) 1991-2017 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> -#include <memcopy.h> - -#undef strncmp - -#ifndef STRNCMP -#define STRNCMP strncmp -#endif - -/* Compare no more than N characters of 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 -STRNCMP (const char *s1, const char *s2, size_t n) -{ - unsigned char c1 = '\0'; - unsigned char c2 = '\0'; - - if (n >= 4) - { - size_t n4 = n >> 2; - do - { - c1 = (unsigned char) *s1++; - c2 = (unsigned char) *s2++; - if (c1 == '\0' || c1 != c2) - return c1 - c2; - c1 = (unsigned char) *s1++; - c2 = (unsigned char) *s2++; - if (c1 == '\0' || c1 != c2) - return c1 - c2; - c1 = (unsigned char) *s1++; - c2 = (unsigned char) *s2++; - if (c1 == '\0' || c1 != c2) - return c1 - c2; - c1 = (unsigned char) *s1++; - c2 = (unsigned char) *s2++; - if (c1 == '\0' || c1 != c2) - return c1 - c2; - } while (--n4 > 0); - n &= 3; - } - - while (n > 0) - { - c1 = (unsigned char) *s1++; - c2 = (unsigned char) *s2++; - if (c1 == '\0' || c1 != c2) - return c1 - c2; - n--; - } - - return c1 - c2; -} - -libc_hidden_builtin_def (STRNCMP) |