string/strings.h

   1 /* Copyright (C) 1991,92,96,97,99,2000 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 Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    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    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 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.  */
  24 #ifndef _STRING_H
  25
  26 # include <features.h>
  27 # define __need_size_t
  28 # include <stddef.h>
  29
  30 __BEGIN_DECLS
  31
  32 /* Compare N bytes of S1 and S2 (same as memcmp).  */
  33 extern int bcmp (__const void *__s1, __const void *__s2, size_t __n)
  34      __THROW __attribute_pure__;
  35
  36 /* Copy N bytes of SRC to DEST (like memmove, but args reversed).  */
  37 extern void bcopy (__const void *__src, void *__dest, size_t __n) __THROW;
  38
  39 /* Set N bytes of S to 0.  */
  40 extern void bzero (void *__s, size_t __n) __THROW;
  41
  42 /* Return the position of the first bit set in I, or 0 if none are set.
  43    The least-significant bit is position 1, the most-significant 32.  */
  44 extern int ffs (int __i) __THROW __attribute__ ((const));
  45
  46 /* Find the first occurrence of C in S (same as strchr).  */
  47 extern char *index (__const char *__s, int __c) __THROW __attribute_pure__;
  48
  49 /* Find the last occurrence of C in S (same as strrchr).  */
  50 extern char *rindex (__const char *__s, int __c) __THROW __attribute_pure__;
  51
  52 /* Compare S1 and S2, ignoring case.  */
  53 extern int strcasecmp (__const char *__s1, __const char *__s2)
  54      __THROW __attribute_pure__;
  55
  56 /* Compare no more than N chars of S1 and S2, ignoring case.  */
  57 extern int strncasecmp (__const char *__s1, __const char *__s2, size_t __n)
  58      __THROW __attribute_pure__;
  59
  60 __END_DECLS
  61
  62 #endif  /* string.h  */
  63
  64 #endif  /* strings.h  */