]>
Commit | Line | Data |
---|---|---|
3eb9473e | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2004 - 2006, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | GetPowerOfTwo32.c\r | |
15 | \r | |
16 | Abstract: \r | |
17 | \r | |
18 | Math worker functions.\r | |
19 | \r | |
20 | --*/\r | |
21 | \r | |
c7f33ca4 | 22 | #include "BaseLibInternals.h"\r |
3eb9473e | 23 | \r |
24 | /**\r | |
25 | Returns the value of the highest bit set in a 32-bit value. Equivalent to\r | |
26 | 1 << HighBitSet32(x).\r | |
27 | \r | |
28 | This function computes the value of the highest bit set in the 32-bit value\r | |
29 | specified by Operand. If Operand is zero, then zero is returned.\r | |
30 | \r | |
31 | @param Operand The 32-bit operand to evaluate.\r | |
32 | \r | |
33 | @return 1 << HighBitSet32(Operand)\r | |
34 | @retval 0 Operand is zero.\r | |
35 | \r | |
36 | **/\r | |
37 | UINT32\r | |
38 | EFIAPI\r | |
39 | GetPowerOfTwo32 (\r | |
40 | IN UINT32 Operand\r | |
41 | )\r | |
42 | {\r | |
43 | if (Operand == 0) {\r | |
44 | return 0;\r | |
45 | }\r | |
46 | \r | |
47 | return 1ul << HighBitSet32 (Operand);\r | |
48 | }\r |