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[glibc.git] / string / strings.h
blob3ba2b04c8e4942e7c2b2436259a974d458f3cee6
1 /* Copyright (C) 1991,92,96,97,99,2000,2001 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, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #ifndef _STRINGS_H
20 #define _STRINGS_H 1
22 /* We don't need and should not read this file if <string.h> was already
23 read. The one exception being that if __USE_BSD isn't defined, then
24 these aren't defined in string.h, so we need to define them here. */
25 #if !defined _STRING_H || !defined __USE_BSD
27 # include <features.h>
28 # define __need_size_t
29 # include <stddef.h>
31 __BEGIN_DECLS
33 /* Compare N bytes of S1 and S2 (same as memcmp). */
34 extern int bcmp (__const void *__s1, __const void *__s2, size_t __n)
35 __THROW __attribute_pure__;
37 /* Copy N bytes of SRC to DEST (like memmove, but args reversed). */
38 extern void bcopy (__const void *__src, void *__dest, size_t __n) __THROW;
40 /* Set N bytes of S to 0. */
41 extern void bzero (void *__s, size_t __n) __THROW;
43 /* Return the position of the first bit set in I, or 0 if none are set.
44 The least-significant bit is position 1, the most-significant 32. */
45 extern int ffs (int __i) __THROW __attribute__ ((const));
47 /* Find the first occurrence of C in S (same as strchr). */
48 extern char *index (__const char *__s, int __c) __THROW __attribute_pure__;
50 /* Find the last occurrence of C in S (same as strrchr). */
51 extern char *rindex (__const char *__s, int __c) __THROW __attribute_pure__;
53 /* Compare S1 and S2, ignoring case. */
54 extern int strcasecmp (__const char *__s1, __const char *__s2)
55 __THROW __attribute_pure__;
57 /* Compare no more than N chars of S1 and S2, ignoring case. */
58 extern int strncasecmp (__const char *__s1, __const char *__s2, size_t __n)
59 __THROW __attribute_pure__;
61 __END_DECLS
63 #endif /* string.h */
65 #endif /* strings.h */