rm_/lib/memcmp2.h
2022-07-28 14:16:50 +08:00

41 lines
1.3 KiB
C

/* Compare two memory areas with possibly different lengths.
Copyright (C) 2009-2022 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef MEMCMP2_H
#define MEMCMP2_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Compare the memory regions S1 = [s1..s1+N1-1], S2 = [s2..s2+n2-1],
lexicographically.
This function's result is locale independent, unlike memcoll()'s.
Return a negative number if S1 < S2, a positive number if S1 > S2, or
0 if S1 and S2 have the same contents. */
extern int memcmp2 (const char *s1, size_t n1, const char *s2, size_t n2)
_GL_ATTRIBUTE_PURE;
#ifdef __cplusplus
}
#endif
#endif /* MEMCMP2_H */