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Last change
on this file since 89916 was 80721, checked in by vboxsync, 6 years ago |
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Devices/EFI/FirmwareNew: Start upgrade process to edk2-stable201908 (compiles on Windows and works to some extent), bugref:4643
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File size:
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| 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 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 6 |
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| 7 | **/
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| 8 |
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| 9 |
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| 10 |
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| 11 |
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| 12 | #include "BaseLibInternals.h"
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| 13 |
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| 14 | /**
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| 15 | Returns the value of the highest bit set in a 32-bit value. Equivalent to
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| 16 | 1 << log2(x).
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| 17 |
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| 18 | This function computes the value of the highest bit set in the 32-bit value
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| 19 | specified by Operand. If Operand is zero, then zero is returned.
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| 20 |
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| 21 | @param Operand The 32-bit operand to evaluate.
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| 22 |
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| 23 | @return 1 << HighBitSet32(Operand)
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| 24 | @retval 0 Operand is zero.
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| 25 |
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| 26 | **/
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| 27 | UINT32
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| 28 | EFIAPI
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| 29 | GetPowerOfTwo32 (
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| 30 | IN UINT32 Operand
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| 31 | )
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| 32 | {
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| 33 | if (0 == Operand) {
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| 34 | return 0;
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| 35 | }
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| 36 |
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| 37 | return 1ul << HighBitSet32 (Operand);
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| 38 | }
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