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Fix invalid return status to sync with newest UEFI spec 2.1
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e1f414b6 1/** @file\r
2 Math worker functions.\r
3\r
4 Copyright (c) 2006, Intel Corporation<BR>\r
5 All rights reserved. This program and the accompanying materials\r
6 are licensed and made available under the terms and conditions of the BSD License\r
7 which accompanies this distribution. The full text of the license may be found at\r
8 http://opensource.org/licenses/bsd-license.php\r
9\r
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
12\r
13**/\r
14\r
15//\r
16// Include common header file for this module.\r
17//\r
f734a10a 18\r
e1f414b6 19\r
20#include "BaseLibInternals.h"\r
21\r
22/**\r
23 Returns the value of the highest bit set in a 64-bit value. Equivalent to\r
24 1 << HighBitSet64(x).\r
25\r
26 This function computes the value of the highest bit set in the 64-bit value\r
27 specified by Operand. If Operand is zero, then zero is returned.\r
28\r
29 @param Operand The 64-bit operand to evaluate.\r
30\r
31 @return 1 << HighBitSet64(Operand)\r
32 @retval 0 Operand is zero.\r
33\r
34**/\r
35UINT64\r
36EFIAPI\r
37GetPowerOfTwo64 (\r
38 IN UINT64 Operand\r
39 )\r
40{\r
41 if (Operand == 0) {\r
42 return 0;\r
43 }\r
44\r
45 return LShiftU64 (1, HighBitSet64 (Operand));\r
46}\r