aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/generic/memmem.c')
-rw-r--r--sysdeps/generic/memmem.c58
1 files changed, 0 insertions, 58 deletions
diff --git a/sysdeps/generic/memmem.c b/sysdeps/generic/memmem.c
deleted file mode 100644
index c40462104a..0000000000
--- a/sysdeps/generic/memmem.c
+++ /dev/null
@@ -1,58 +0,0 @@
-/* Copyright (C) 1991,92,93,94,96,97,98,2000,2004 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <stddef.h>
-#include <string.h>
-
-#ifndef _LIBC
-# define __builtin_expect(expr, val) (expr)
-#endif
-
-#undef memmem
-
-/* Return the first occurrence of NEEDLE in HAYSTACK. */
-void *
-memmem (haystack, haystack_len, needle, needle_len)
- const void *haystack;
- size_t haystack_len;
- const void *needle;
- size_t needle_len;
-{
- const char *begin;
- const char *const last_possible
- = (const char *) haystack + haystack_len - needle_len;
-
- if (needle_len == 0)
- /* The first occurrence of the empty string is deemed to occur at
- the beginning of the string. */
- return (void *) haystack;
-
- /* Sanity check, otherwise the loop might search through the whole
- memory. */
- if (__builtin_expect (haystack_len < needle_len, 0))
- return NULL;
-
- for (begin = (const char *) haystack; begin <= last_possible; ++begin)
- if (begin[0] == ((const char *) needle)[0] &&
- !memcmp ((const void *) &begin[1],
- (const void *) ((const char *) needle + 1),
- needle_len - 1))
- return (void *) begin;
-
- return NULL;
-}