1  /* Compare two memory areas with possibly different lengths.
       2     Copyright (C) 2009-2023 Free Software Foundation, Inc.
       3  
       4     This file is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU Lesser General Public License as
       6     published by the Free Software Foundation; either version 2.1 of the
       7     License, or (at your option) any later version.
       8  
       9     This file 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 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  /* This file uses _GL_ATTRIBUTE_PURE.  */
      21  #if !_GL_CONFIG_H_INCLUDED
      22   #error "Please include config.h first."
      23  #endif
      24  
      25  #include <stddef.h>
      26  
      27  #ifdef __cplusplus
      28  extern "C" {
      29  #endif
      30  
      31  
      32  /* Compare the memory regions S1 = [s1..s1+N1-1], S2 = [s2..s2+n2-1],
      33     lexicographically.
      34     This function's result is locale independent, unlike memcoll()'s.
      35     Return a negative number if S1 < S2, a positive number if S1 > S2, or
      36     0 if S1 and S2 have the same contents.  */
      37  extern int memcmp2 (const char *s1, size_t n1, const char *s2, size_t n2)
      38    _GL_ATTRIBUTE_PURE;
      39  
      40  
      41  #ifdef __cplusplus
      42  }
      43  #endif
      44  
      45  #endif /* MEMCMP2_H */