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Tricks of the Windows Gam…ming Gurus (2nd Edition)
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Disc2.iso
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vc98
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crt
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src
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wcsncmp.c
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C/C++ Source or Header
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1998-06-17
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1KB
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56 lines
/***
*wcsncmp.c - compare first n characters of two wide-character strings
*
* Copyright (c) 1985-1997, Microsoft Corporation. All rights reserved.
*
*Purpose:
* defines wcsncmp() - compare first n characters of two wchar_t strings
* for lexical order.
*
*******************************************************************************/
#include <cruntime.h>
#include <string.h>
/***
*int wcsncmp(first, last, count) - compare first count chars of wchar_t strings
*
*Purpose:
* Compares two strings for lexical order. The comparison stops
* after: (1) a difference between the strings is found, (2) the end
* of the strings is reached, or (3) count characters have been
* compared (wide-character strings).
*
*Entry:
* wchar_t *first, *last - strings to compare
* size_t count - maximum number of characters to compare
*
*Exit:
* returns <0 if first < last
* returns 0 if first == last
* returns >0 if first > last
*
*Exceptions:
*
*******************************************************************************/
int __cdecl wcsncmp (
const wchar_t * first,
const wchar_t * last,
size_t count
)
{
if (!count)
return(0);
while (--count && *first && *first == *last)
{
first++;
last++;
}
return((int)(*first - *last));
}