| /** @file | |
| Math worker functions. | |
| Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> | |
| This program and the accompanying materials | |
| are licensed and made available under the terms and conditions of the BSD License | |
| which accompanies this distribution. The full text of the license may be found at | |
| http://opensource.org/licenses/bsd-license.php. | |
| THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| **/ | |
| #include "BaseLibInternals.h" | |
| /** | |
| Returns the value of the highest bit set in a 32-bit value. Equivalent to | |
| 1 << log2(x). | |
| This function computes the value of the highest bit set in the 32-bit value | |
| specified by Operand. If Operand is zero, then zero is returned. | |
| @param Operand The 32-bit operand to evaluate. | |
| @return 1 << HighBitSet32(Operand) | |
| @retval 0 Operand is zero. | |
| **/ | |
| UINT32 | |
| EFIAPI | |
| GetPowerOfTwo32 ( | |
| IN UINT32 Operand | |
| ) | |
| { | |
| if (0 == Operand) { | |
| return 0; | |
| } | |
| return 1ul << HighBitSet32 (Operand); | |
| } |