53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/* wcsncmp( const wchar_t *, const wchar_t *, size_t )
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This file is part of the Public Domain C Library (PDCLib).
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Permission is granted to use, modify, and / or redistribute at will.
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*/
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#include <wchar.h>
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#ifndef REGTEST
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int wcsncmp( const wchar_t * s1, const wchar_t * s2, size_t n )
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{
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while ( *s1 && n && ( *s1 == *s2 ) )
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{
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++s1;
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++s2;
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--n;
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}
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if ( n == 0 )
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{
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return 0;
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}
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else
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{
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return ( *(wchar_t *)s1 - *(wchar_t *)s2 );
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}
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}
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#endif
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#ifdef TEST
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#include "_PDCLIB_test.h"
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int main( void )
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{
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wchar_t cmpabcde[] = L"abcde\0f";
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wchar_t cmpabcd_[] = L"abcde\xfc";
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wchar_t empty[] = L"";
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wchar_t x[] = L"x";
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TESTCASE( wcsncmp( wabcde, cmpabcde, 5 ) == 0 );
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TESTCASE( wcsncmp( wabcde, cmpabcde, 10 ) == 0 );
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TESTCASE( wcsncmp( wabcde, wabcdx, 5 ) < 0 );
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TESTCASE( wcsncmp( wabcdx, wabcde, 5 ) > 0 );
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TESTCASE( wcsncmp( empty, wabcde, 5 ) < 0 );
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TESTCASE( wcsncmp( wabcde, empty, 5 ) > 0 );
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TESTCASE( wcsncmp( wabcde, wabcdx, 4 ) == 0 );
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TESTCASE( wcsncmp( wabcde, x, 0 ) == 0 );
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TESTCASE( wcsncmp( wabcde, x, 1 ) < 0 );
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TESTCASE( wcsncmp( wabcde, cmpabcd_, 10 ) < 0 );
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return TEST_RESULTS;
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}
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#endif
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