1/*++ 2 3Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR> 4This program and the accompanying materials 5are licensed and made available under the terms and conditions of the BSD License 6which accompanies this distribution. The full text of the license may be found at 7http://opensource.org/licenses/bsd-license.php 8 9THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 12Module Name: 13 14 GetPowerOfTwo32.c 15 16Abstract: 17 18 Math worker functions. 19 20--*/ 21 22#include "BaseLibInternals.h" 23 24/** 25 Returns the value of the highest bit set in a 32-bit value. Equivalent to 26 1 << HighBitSet32(x). 27 28 This function computes the value of the highest bit set in the 32-bit value 29 specified by Operand. If Operand is zero, then zero is returned. 30 31 @param Operand The 32-bit operand to evaluate. 32 33 @return 1 << HighBitSet32(Operand) 34 @retval 0 Operand is zero. 35 36**/ 37UINT32 38EFIAPI 39GetPowerOfTwo32 ( 40 IN UINT32 Operand 41 ) 42{ 43 if (Operand == 0) { 44 return 0; 45 } 46 47 return 1ul << HighBitSet32 (Operand); 48} 49