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e1f414b6 1/** @file\r
2 Math worker functions.\r
3\r
bb817c56 4 Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
9344f092 5 SPDX-License-Identifier: BSD-2-Clause-Patent\r
e1f414b6 6\r
7**/\r
8\r
e1f414b6 9#include "BaseLibInternals.h"\r
10\r
11/**\r
12 Rotates a 32-bit integer left between 0 and 31 bits, filling the low bits\r
13 with the high bits that were rotated.\r
14\r
15 This function rotates the 32-bit value Operand to the left by Count bits. The\r
16 low Count bits are fill with the high Count bits of Operand. The rotated\r
17 value is returned.\r
18\r
19 If Count is greater than 31, then ASSERT().\r
20\r
21 @param Operand The 32-bit operand to rotate left.\r
22 @param Count The number of bits to rotate left.\r
23\r
9aa049d9 24 @return Operand << Count\r
e1f414b6 25\r
26**/\r
27UINT32\r
28EFIAPI\r
29LRotU32 (\r
2f88bd3a
MK
30 IN UINT32 Operand,\r
31 IN UINTN Count\r
e1f414b6 32 )\r
33{\r
5385a579 34 ASSERT (Count < 32);\r
e1f414b6 35 return (Operand << Count) | (Operand >> (32 - Count));\r
36}\r