diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Math.c')
| -rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Math.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Math.c b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Math.c deleted file mode 100644 index c558869149..0000000000 --- a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Math.c +++ /dev/null @@ -1,231 +0,0 @@ -/*++
-
-Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>
-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:
-
- Math.c
-
-Abstract:
-
- Math worker functions.
-
---*/
-
-#include "Tiano.h"
-
-UINT64
-LShiftU64 (
- IN UINT64 Operand,
- IN UINTN Count
- )
-/*++
-
-Routine Description:
-
- This routine allows a 64 bit value to be left shifted by 32 bits and
- returns the shifted value.
- Count is valid up 63. (Only Bits 0-5 is valid for Count)
-
-Arguments:
-
- Operand - Value to be shifted
- Count - Number of times to shift left.
-
-Returns:
-
- Value shifted left identified by the Count.
-
---*/
-{
- return Operand << Count;
-}
-
-UINT64
-MultU64x32 (
- IN UINT64 Multiplicand,
- IN UINTN Multiplier
- )
-/*++
-
-Routine Description:
-
- This routine allows a 64 bit value to be multiplied with a 32 bit
- value returns 64bit result.
- No checking if the result is greater than 64bits
-
-Arguments:
-
- Multiplicand - multiplicand
- Multiplier - multiplier
-
-Returns:
-
- Multiplicand * Multiplier
-
---*/
-{
- return Multiplicand * Multiplier;
-}
-
-UINT64
-Power10U64 (
- IN UINT64 Operand,
- IN UINTN Power
- )
-{
- UINT64 Result;
-
- Result = Operand;
- while (Power-- > 0) {
- Result *= 10;
- }
- return Result;
-}
-
-UINT64
-RShiftU64 (
- IN UINT64 Operand,
- IN UINTN Count
- )
-/*++
-
-Routine Description:
-
- This routine allows a 64 bit value to be right shifted by 32 bits and returns the
- shifted value.
- Count is valid up 63. (Only Bits 0-5 is valid for Count)
-
-Arguments:
-
- Operand - Value to be shifted
- Count - Number of times to shift right.
-
-Returns:
-
- Value shifted right identified by the Count.
-
---*/
-{
- return Operand >> Count;
-}
-
-UINT64
-DivU64x32 (
- IN UINT64 Dividend,
- IN UINTN Divisor,
- OUT UINTN *Remainder OPTIONAL
- )
-/*++
-
-Routine Description:
-
- This routine allows a 64 bit value to be divided with a 32 bit value returns
- 64bit result and the Remainder.
-
-Arguments:
-
- Dividend - dividend
- Divisor - divisor
- Remainder - buffer for remainder
-
-Returns:
-
- Dividend / Divisor
- Remainder = Dividend mod Divisor
-
---*/
-{
- if (Remainder != NULL) {
- *Remainder = Dividend % Divisor;
- }
-
- return Dividend / Divisor;
-}
-
-UINT8
-Log2 (
- IN UINT64 Operand
- )
-/*++
-
-Routine Description:
-
- This function computes rounded down log2 of the Operand. This is an equivalent
- of the position of the highest bit set in the Operand treated as a mask.
- E.g., Log2 (0x0001) == 0, Log2 (0x0002) == 1, Log2 (0x0003) == 1, Log2 (0x0005) == 2
- Log2 (0x4000) == 14, Log2 (0x8000) == 15, Log2 (0xC000) == 15, Log2 (0xFFFF) == 15, etc.
-
-Arguments:
- Operand - value of which the Log2 is to be computed.
-
-Returns:
- Rounded down log2 of the Operand or 0xFF if zero passed in.
-
---*/
-{
- UINT8 Bitpos;
- Bitpos = 0;
-
- if (Operand == 0) {
- return (0xff);
- }
-
- while (Operand != 0) {
- Operand >>= 1;
- Bitpos++;
- }
- return (UINT8)(Bitpos - 1);
-
-}
-
-UINT64
-GetPowerOfTwo (
- IN UINT64 Operand
- )
-/*++
-
-Routine Description:
-
- Calculates the largest integer that is both
- a power of two and less than Input
-
-Arguments:
-
- Operand - value to calculate power of two
-
-Returns:
-
- the largest integer that is both a power of
- two and less than Input
-
---*/
-{
- UINT8 Bitpos;
- Bitpos = 0;
-
- if (Operand == 0) {
- return 0;
- }
-
- while (Operand != 0) {
- Operand >>= 1;
- Bitpos++;
- }
-
- Operand = 1;
- Bitpos--;
- while (Bitpos != 0) {
- Operand <<= 1;
- Bitpos--;
- }
-
- return Operand;
-}
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