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31 lines
593 B
C++
31 lines
593 B
C++
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//
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// wcsrev.cpp
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// Defines _wcsrev(), which reverses a wide chraacter string in place. The
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// pointer to the string is returned.
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//
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#include <string.h>
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extern "C" wchar_t* __cdecl _wcsrev(wchar_t* const string)
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{
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// Find the end of the string:
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wchar_t* right = string;
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while (*right++) { }
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right -= 2;
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// Reverse the strong:
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wchar_t* left = string;
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while (left < right)
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{
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wchar_t const c = *left;
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*left++ = *right;
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*right-- = c;
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}
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return string;
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}
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