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Last change
on this file since 80924 was 80721, checked in by vboxsync, 6 years ago |
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Devices/EFI/FirmwareNew: Start upgrade process to edk2-stable201908 (compiles on Windows and works to some extent), bugref:4643
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File size:
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| 1 | /** @file
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| 2 | Math worker functions.
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| 3 |
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| 4 | Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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| 5 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 6 |
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| 7 | **/
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| 8 |
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| 9 | #include "BaseLibInternals.h"
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| 10 |
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| 11 | /**
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| 12 | Rotates a 32-bit integer left between 0 and 31 bits, filling the low bits
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| 13 | with the high bits that were rotated.
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| 14 |
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| 15 | This function rotates the 32-bit value Operand to the left by Count bits. The
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| 16 | low Count bits are fill with the high Count bits of Operand. The rotated
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| 17 | value is returned.
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| 18 |
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| 19 | If Count is greater than 31, then ASSERT().
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| 20 |
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| 21 | @param Operand The 32-bit operand to rotate left.
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| 22 | @param Count The number of bits to rotate left.
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| 23 |
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| 24 | @return Operand << Count
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| 25 |
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| 26 | **/
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| 27 | UINT32
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| 28 | EFIAPI
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| 29 | LRotU32 (
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| 30 | IN UINT32 Operand,
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| 31 | IN UINTN Count
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| 32 | )
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| 33 | {
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| 34 | ASSERT (Count < 32);
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| 35 | return (Operand << Count) | (Operand >> (32 - Count));
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| 36 | }
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