1 /* Copyright (C) 1991,92,96,97,99,2000,2001 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 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. 8 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. 13 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. */ 18 19 #ifndef _STRINGS_H 20 #define _STRINGS_H 1 21 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 26 27 # include <features.h> 28 # define __need_size_t 29 # include <stddef.h> 30 31 __BEGIN_DECLS 32 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__; 36 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; 39 40 /* Set N bytes of S to 0. */ 41 extern void bzero (void *__s, size_t __n) __THROW; 42 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)); 46 47 /* Find the first occurrence of C in S (same as strchr). */ 48 extern char *index (__const char *__s, int __c) __THROW __attribute_pure__; 49 50 /* Find the last occurrence of C in S (same as strrchr). */ 51 extern char *rindex (__const char *__s, int __c) __THROW __attribute_pure__; 52 53 /* Compare S1 and S2, ignoring case. */ 54 extern int strcasecmp (__const char *__s1, __const char *__s2) 55 __THROW __attribute_pure__; 56 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__; 60 61 __END_DECLS 62 63 #endif /* string.h */ 64 65 #endif /* strings.h */ 66