lib/memchr2.h

   1 /* Scan memory for the first of two bytes.
   2    Copyright (C) 2008-2019 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <stddef.h>
  18
  19 #ifdef __cplusplus
  20 extern "C" {
  21 #endif
  22
  23 /* Return the first address of either C1 or C2 (treated as unsigned
  24    char) that occurs within N bytes of the memory region S.  If
  25    neither byte appears, return NULL.  */
  26
  27 extern void *memchr2 (void const *s, int c1, int c2, size_t n)
  28   _GL_ATTRIBUTE_PURE;
  29
  30 #ifdef __cplusplus
  31 }
  32 #endif