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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/** @file
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Math worker functions.
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Copyright (c) 2006, Intel Corporation<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "BaseLibInternals.h"
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/**
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Rotates a 32-bit integer right between 0 and 31 bits, filling the high bits
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with the low bits that were rotated.
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This function rotates the 32-bit value Operand to the right by Count bits.
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The high Count bits are fill with the low Count bits of Operand. The rotated
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value is returned.
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If Count is greater than 31, then ASSERT().
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@param Operand The 32-bit operand to rotate right.
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@param Count The number of bits to rotate right.
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@return Operand >>> Count
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**/
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UINT32
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EFIAPI
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RRotU32 (
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IN UINT32 Operand,
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IN UINTN Count
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)
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{
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ASSERT (Count < sizeof (Operand) * 8);
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return (Operand >> Count) | (Operand << (32 - Count));
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}
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