/** @file | |
Math worker functions. | |
Copyright (c) 2006, Intel Corporation<BR> | |
All rights reserved. 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 << HighBitSet32(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 | |
) | |
{ | |
INTN BitPos; | |
return (BitPos = HighBitSet32 (Operand)) > 0 ? 1ul << BitPos : 0; | |
} |