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Diffstat (limited to 'EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/RRotU64.c')
-rw-r--r-- | EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/RRotU64.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/RRotU64.c b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/RRotU64.c new file mode 100644 index 0000000..f862278 --- /dev/null +++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/RRotU64.c @@ -0,0 +1,50 @@ +/*++ + +Copyright (c) 2004 - 2006, Intel Corporation +All rights reserved. This program and the accompanying materials +are licensed and made available under the terms and conditions of the BSD License +which accompanies this distribution. The full text of the license may be found at +http://opensource.org/licenses/bsd-license.php + +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + + +Module Name: + + RRotU64.c + +Abstract: + + Math worker functions. + +--*/ + +#include "BaseLibInternal.h" + +/** + Rotates a 64-bit integer right between 0 and 63 bits, filling the high bits + with the high low bits that were rotated. + + This function rotates the 64-bit value Operand to the right by Count bits. + The high Count bits are fill with the low Count bits of Operand. The rotated + value is returned. + + If Count is greater than 63, then ASSERT(). + + @param Operand The 64-bit operand to rotate right. + @param Count The number of bits to rotate right. + + @return Operand >>> Count + +**/ +UINT64 +EFIAPI +RRotU64 ( + IN UINT64 Operand, + IN UINTN Count + ) +{ + ASSERT (Count < sizeof (Operand) * 8); + return InternalMathRRotU64 (Operand, Count); +} |