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[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3
Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3 License: MIT
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sdk/lib/ucrt/stdlib/rotr.cpp
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sdk/lib/ucrt/stdlib/rotr.cpp
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//
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// rotr.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 _lrotl(), _rotl(), and _rotl64(), which perform a rotate-right on an
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// integer.
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//
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#include <stdlib.h>
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#include <limits.h>
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#pragma function(_lrotr, _rotr, _rotr64)
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#if UINT_MAX != 0xffffffff
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#error This source file assumes 32-bit integers
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#endif
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#if UINT_MAX != ULONG_MAX
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#error This source file assumes sizeof(int) == sizeof(long)
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#endif
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extern "C" unsigned long __cdecl _lrotr(unsigned long value, int shift)
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{
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shift &= 0x1f;
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value = (value << (0x20 - shift)) | (value >> shift);
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return value;
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}
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extern "C" unsigned __cdecl _rotr(unsigned value, int shift)
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{
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shift &= 0x1f;
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value = (value << (0x20 - shift)) | (value >> shift);
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return value;
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}
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extern "C" unsigned __int64 __cdecl _rotr64(unsigned __int64 value, int shift)
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{
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shift &= 0x3f;
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value = (value << (0x40 - shift)) | (value >> shift);
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return value;
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}
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