| Vishal Bhoj | 82c8071 | 2015-12-15 21:13:33 +0530 | [diff] [blame^] | 1 | /** @file
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| 2 | Math worker functions.
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| 3 |
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| 4 | Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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| 5 | This program and the accompanying materials
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| 6 | are licensed and made available under the terms and conditions of the BSD License
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| 7 | which accompanies this distribution. The full text of the license may be found at
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| 8 | http://opensource.org/licenses/bsd-license.php.
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| 9 |
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| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 12 |
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| 13 | **/
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| 14 |
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| 15 | #include "BaseLibInternals.h"
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| 16 |
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| 17 | /**
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| 18 | Rotates a 32-bit integer left between 0 and 31 bits, filling the low bits
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| 19 | with the high bits that were rotated.
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| 20 |
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| 21 | This function rotates the 32-bit value Operand to the left by Count bits. The
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| 22 | low Count bits are fill with the high Count bits of Operand. The rotated
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| 23 | value is returned.
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| 24 |
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| 25 | If Count is greater than 31, then ASSERT().
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| 26 |
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| 27 | @param Operand The 32-bit operand to rotate left.
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| 28 | @param Count The number of bits to rotate left.
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| 29 |
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| 30 | @return Operand << Count
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| 31 |
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| 32 | **/
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| 33 | UINT32
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| 34 | EFIAPI
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| 35 | LRotU32 (
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| 36 | IN UINT32 Operand,
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| 37 | IN UINTN Count
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| 38 | )
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| 39 | {
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| 40 | ASSERT (Count < 32);
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| 41 | return (Operand << Count) | (Operand >> (32 - Count));
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| 42 | }
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