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