lib/memcmp2.h

   1 /* Compare two memory areas with possibly different lengths.
   2    Copyright (C) 2009-2021 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify it
   5    under the terms of the GNU Lesser General Public License as published
   6    by 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 GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #ifndef MEMCMP2_H
  18 #define MEMCMP2_H
  19
  20 #include <stddef.h>
  21
  22 #ifdef __cplusplus
  23 extern "C" {
  24 #endif
  25
  26
  27 /* Compare the memory regions S1 = [s1..s1+N1-1], S2 = [s2..s2+n2-1],
  28    lexicographically.
  29    This function's result is locale independent, unlike memcoll()'s.
  30    Return a negative number if S1 < S2, a positive number if S1 > S2, or
  31    0 if S1 and S2 have the same contents.  */
  32 extern int memcmp2 (const char *s1, size_t n1, const char *s2, size_t n2)
  33   _GL_ATTRIBUTE_PURE;
  34
  35
  36 #ifdef __cplusplus
  37 }
  38 #endif
  39
  40 #endif /* MEMCMP2_H */