MdePkg: Replace Opcode with the corresponding instructions.

[mirror_edk2.git] / MdePkg / Library / BaseLib / LowBitSet32.c

diff --git a/MdePkg/Library/BaseLib/LowBitSet32.c b/MdePkg/Library/BaseLib/LowBitSet32.c
index a598a1f71f41570ebe4824b5c58f9cce4b0a24a1..52714314dd643863ccd9e0557d0382bdb7f8903d 100644 (file)
--- a/MdePkg/Library/BaseLib/LowBitSet32.c
+++ b/MdePkg/Library/BaseLib/LowBitSet32.c
@@ -1,22 +1,11 @@
 /** @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 - 2008, Intel Corporation. All rights reserved.<BR>\r
+  SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
-//\r
-// Include common header file for this module.\r
-//\r
-\r
-\r
 #include "BaseLibInternals.h"\r
 \r
 /**\r
@@ -28,22 +17,24 @@
 \r
   @param  Operand The 32-bit operand to evaluate.\r
 \r
-  @return Position of the lowest bit set in Operand if found.\r
-  @retval -1 Operand is zero.\r
+  @retval 0..31  The lowest bit set in Operand was found.\r
+  @retval -1     Operand is zero.\r
 \r
 **/\r
 INTN\r
 EFIAPI\r
 LowBitSet32 (\r
-  IN      UINT32                    Operand\r
+  IN      UINT32  Operand\r
   )\r
 {\r
-  INTN                              BitIndex;\r
+  INTN  BitIndex;\r
 \r
   if (Operand == 0) {\r
     return -1;\r
   }\r
 \r
-  for (BitIndex = 0; (Operand & 1) == 0; BitIndex++, Operand >>= 1);\r
+  for (BitIndex = 0; 0 == (Operand & 1); BitIndex++, Operand >>= 1) {\r
+  }\r
+\r
   return BitIndex;\r
 }\r