mirror of https://github.com/acidanthera/audk.git
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
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/** @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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//
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// Include common header file for this module.
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//
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#include "CommonHeader.h"
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#include "BaseLibInternals.h"
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/**
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Rotates a 32-bit integer left between 0 and 31 bits, filling the low bits
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with the high bits that were rotated.
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This function rotates the 32-bit value Operand to the left by Count bits. The
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low Count bits are fill with the high 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 left.
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@param Count The number of bits to rotate left.
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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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LRotU32 (
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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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