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123456789101112131415161718192021222324252627282930313233343536373839404142434445//// wcsncmp.cpp//// Copyright (c) Microsoft Corporation. All rights reserved.//// Defines wcsncmp(), which compares two wide character strings, determining// their ordinal order. The function tests at most 'count' characters.//// Note that the comparison is performed with unsigned elements (wchar_t is// unsigned in this implementation), so the null character (0) is less than// all other characters.//// Returns:// * a negative value if a < b// * zero if a == b// * a positive value if a > b//#include <string.h>
#ifdef _M_ARM #pragma function(wcsncmp)#endif
extern "C" int __cdecl wcsncmp( wchar_t const* a, wchar_t const* b, size_t count ){ if (count == 0) return 0;
while (--count != 0 && *a && *a == *b) { ++a; ++b; }
return static_cast<int>(*a - *b);}