66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/***
|
|
*wcscmp.c - routine to compare two wchar_t strings (for equal, less, or greater)
|
|
*
|
|
* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* Compares two wide-character strings, determining their lexical order.
|
|
*
|
|
*Revision History:
|
|
* 09-09-91 ETC Created from strcmp.c.
|
|
* 04-07-92 KRS Updated and ripped out _INTL switches.
|
|
* 04-06-93 SKS Replace _CRTAPI* with __cdecl
|
|
* 02-07-94 CFW POSIXify.
|
|
*
|
|
*******************************************************************************/
|
|
|
|
#ifndef _POSIX_
|
|
|
|
#include <cruntime.h>
|
|
#include <string.h>
|
|
|
|
/***
|
|
*wcscmp - compare two wchar_t strings,
|
|
* returning less than, equal to, or greater than
|
|
*
|
|
*Purpose:
|
|
* wcscmp compares two wide-character strings and returns an integer
|
|
* to indicate whether the first is less than the second, the two are
|
|
* equal, or whether the first is greater than the second.
|
|
*
|
|
* Comparison is done wchar_t by wchar_t on an UNSIGNED basis, which is to
|
|
* say that Null wchar_t(0) is less than any other character.
|
|
*
|
|
*Entry:
|
|
* const wchar_t * src - string for left-hand side of comparison
|
|
* const wchar_t * dst - string for right-hand side of comparison
|
|
*
|
|
*Exit:
|
|
* returns -1 if src < dst
|
|
* returns 0 if src == dst
|
|
* returns +1 if src > dst
|
|
*
|
|
*Exceptions:
|
|
*
|
|
*******************************************************************************/
|
|
|
|
int __cdecl wcscmp (
|
|
const wchar_t * src,
|
|
const wchar_t * dst
|
|
)
|
|
{
|
|
int ret = 0 ;
|
|
|
|
while( ! (ret = (int)(*src - *dst)) && *dst)
|
|
++src, ++dst;
|
|
|
|
if ( ret < 0 )
|
|
ret = -1 ;
|
|
else if ( ret > 0 )
|
|
ret = 1 ;
|
|
|
|
return( ret );
|
|
}
|
|
|
|
#endif /* _POSIX_ */
|