string/strings.h

   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  */