MdePkg/UefiDebugLibDebugPortProtocol: Add destructor to CloseEvent

[mirror_edk2.git] / MdePkg / Library / BaseLib / GetPowerOfTwo64.c

diff --git a/MdePkg/Library/BaseLib/GetPowerOfTwo64.c b/MdePkg/Library/BaseLib/GetPowerOfTwo64.c
index 9994fb8f12e29acd8cc6cf2bfbebc13deb1d5735..5033076f844c040008b407e557bb38be1eb1d6fc 100644 (file)
--- a/MdePkg/Library/BaseLib/GetPowerOfTwo64.c
+++ b/MdePkg/Library/BaseLib/GetPowerOfTwo64.c
@@ -1,22 +1,19 @@
 /** @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
@@ -33,7 +30,9 @@ GetPowerOfTwo64 (
   IN      UINT64                    Operand\r
   )\r
 {\r
-  INTN                              BitPos;\r
+  if (Operand == 0) {\r
+    return 0;\r
+  }\r
 \r
-  return (BitPos = HighBitSet64 (Operand)) > 0 ? LShiftU64 (1, BitPos) : 0;\r
+  return LShiftU64 (1, (UINTN) HighBitSet64 (Operand));\r
 }\r