/** @file\r
Math worker functions.\r
\r
- Copyright (c) 2006, Intel Corporation<BR>\r
- All rights reserved. This program and the accompanying materials\r
- are licensed and made available under the terms and conditions of the BSD License\r
- which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+ Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
+\r
+\r
+\r
#include "BaseLibInternals.h"\r
\r
/**\r
Returns the value of the highest bit set in a 64-bit value. Equivalent to\r
- 1 << HighBitSet64(x).\r
+ 1 << log2(x).\r
\r
This function computes the value of the highest bit set in the 64-bit value\r
specified by Operand. If Operand is zero, then zero is returned.\r
IN UINT64 Operand\r
)\r
{\r
- INTN BitPos;\r
+ if (Operand == 0) {\r
+ return 0;\r
+ }\r
\r
- BitPos = HighBitSet64 (Operand);\r
- return BitPos >= 0 ? LShiftU64 (1, BitPos) : 0;\r
+ return LShiftU64 (1, (UINTN) HighBitSet64 (Operand));\r
}\r