Moved the MdePkg to OldMdePkg so that new code in MdePkg does not break existing...

[mirror_edk2.git] / OldMdePkg / Library / BaseLib / LShiftU64.c

diff --git a/OldMdePkg/Library/BaseLib/LShiftU64.c b/OldMdePkg/Library/BaseLib/LShiftU64.c
new file mode 100644 (file)
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+++ b/OldMdePkg/Library/BaseLib/LShiftU64.c
@@ -0,0 +1,41 @@
+/** @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
+\r
+**/\r
+\r
+#include "BaseLibInternals.h"\r
+\r
+/**\r
+  Shifts a 64-bit integer left between 0 and 63 bits. The low bits are filled\r
+  with zeros. The shifted value is returned.\r
+\r
+  This function shifts the 64-bit value Operand to the left by Count bits. The\r
+  low Count bits are set to zero. The shifted value is returned.\r
+\r
+  If Count is greater than 63, then ASSERT().\r
+\r
+  @param  Operand The 64-bit operand to shift left.\r
+  @param  Count   The number of bits to shift left.\r
+\r
+  @return Operand << Count\r
+\r
+**/\r
+UINT64\r
+EFIAPI\r
+LShiftU64 (\r
+  IN      UINT64                    Operand,\r
+  IN      UINTN                     Count\r
+  )\r
+{\r
+  ASSERT (Count < sizeof (Operand) * 8);\r
+  return InternalMathLShiftU64 (Operand, Count);\r
+}\r