1/**
 2 * This file has no copyright assigned and is placed in the Public Domain.
 3 * This file is part of the mingw-w64 runtime package.
 4 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
 5 */
 6/*	This source code was extracted from the Q8 package created and placed
 7    in the PUBLIC DOMAIN by Doug Gwyn <gwyn@arl.mil>
 8    last edit:	1999/11/05	gwyn@arl.mil
 9
10    Implements subclause 7.24 of ISO/IEC 9899:1999 (E).
11
12	It supports an encoding where all char codes are mapped
13	to the *same* code values within a wchar_t or wint_t,
14	so long as no other wchar_t codes are used by the program.
15
16*/
17
18#define __CRT__NO_INLINE
19#include	<wchar.h>
20
21#if 0
22int
23wmemcmp(s1, s2, n)
24	register const wchar_t	*s1;
25	register const wchar_t	*s2;
26	size_t				n;
27{
28	if ( n == 0 || s1 == s2 )
29		return 0;		/* even for NULL pointers */
30
31	if ( (s1 != NULL) != (s2 != NULL) )
32		return s2 == NULL ? 1 : -1;	/* robust */
33
34	for ( ; n > 0; ++s1, ++s2, --n )
35		if ( *s1 != *s2 )
36			return *s1 - *s2;
37
38	return 0;
39}
40#endif
41
42int __cdecl wmemcmp(const wchar_t *_S1,const wchar_t *_S2,size_t _N)
43{
44	if (_N == 0 || _S1 == _S2)
45		return 0;	/* even for NULL pointers */
46
47	if ((_S1 != NULL) != (_S2 != NULL))
48		return _S2 == NULL ? 1 : -1;	/* robust */
49
50	for ( ; 0 < _N; ++_S1, ++_S2, --_N)
51		if (*_S1 != *_S2)
52			return (*_S1 < *_S2 ? -1 : +1);
53
54	return 0;
55}
56