| Vishal Bhoj | 82c8071 | 2015-12-15 21:13:33 +0530 | [diff] [blame^] | 1 | /** @file
|
| 2 | Math worker functions.
|
| 3 |
|
| 4 | Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
|
| 5 | This program and the accompanying materials
|
| 6 | are licensed and made available under the terms and conditions of the BSD License
|
| 7 | which accompanies this distribution. The full text of the license may be found at
|
| 8 | http://opensource.org/licenses/bsd-license.php.
|
| 9 |
|
| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
| 12 |
|
| 13 | **/
|
| 14 |
|
| 15 | #include "BaseLibInternals.h"
|
| 16 |
|
| 17 | /**
|
| 18 | Rotates a 32-bit integer right between 0 and 31 bits, filling the high bits
|
| 19 | with the low bits that were rotated.
|
| 20 |
|
| 21 | This function rotates the 32-bit value Operand to the right by Count bits.
|
| 22 | The high Count bits are fill with the low Count bits of Operand. The rotated
|
| 23 | value is returned.
|
| 24 |
|
| 25 | If Count is greater than 31, then ASSERT().
|
| 26 |
|
| 27 | @param Operand The 32-bit operand to rotate right.
|
| 28 | @param Count The number of bits to rotate right.
|
| 29 |
|
| 30 | @return Operand >> Count.
|
| 31 |
|
| 32 | **/
|
| 33 | UINT32
|
| 34 | EFIAPI
|
| 35 | RRotU32 (
|
| 36 | IN UINT32 Operand,
|
| 37 | IN UINTN Count
|
| 38 | )
|
| 39 | {
|
| 40 | ASSERT (Count < 32);
|
| 41 | return (Operand >> Count) | (Operand << (32 - Count));
|
| 42 | }
|