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/** @file
Leaf math worker functions that require 64-bit arithmetic support from the
compiler.
Copyright (c) 2006, Intel Corporation<BR>
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: Math64.c
**/
UINT64
EFIAPI
InternalMathLShiftU64 (
IN UINT64 Operand,
IN UINTN Count
)
{
return Operand << Count;
}
UINT64
EFIAPI
InternalMathRShiftU64 (
IN UINT64 Operand,
IN UINTN Count
)
{
return Operand >> Count;
}
UINT64
EFIAPI
InternalMathARShiftU64 (
IN UINT64 Operand,
IN UINTN Count
)
{
//
// Test if this compiler supports arithmetic shift
//
if ((((-1) << (sizeof (-1) * 8 - 1)) >> (sizeof (-1) * 8 - 1)) == -1) {
//
// Arithmetic shift is supported
//
return (UINT64)((INT64)Operand >> Count);
}
//
// Arithmetic is not supported
//
return (Operand >> Count) |
((INTN)Operand < 0 ? ~((UINTN)-1 >> Count) : 0);
}
UINT64
EFIAPI
InternalMathLRotU64 (
IN UINT64 Operand,
IN UINTN Count
)
{
return (Operand << Count) | (Operand >> (64 - Count));
}
UINT64
EFIAPI
InternalMathRRotU64 (
IN UINT64 Operand,
IN UINTN Count
)
{
return (Operand >> Count) | (Operand << (64 - Count));
}
UINT64
EFIAPI
InternalMathSwapBytes64 (
IN UINT64 Operand
)
{
return (UINT64)(
((UINT64)SwapBytes32 ((UINT32)Operand) << 32) |
((UINT64)SwapBytes32 ((UINT32)(Operand >> 32)))
);
}
UINT64
EFIAPI
InternalMathMultU64x32 (
IN UINT64 Multiplicand,
IN UINT32 Multiplier
)
{
return Multiplicand * Multiplier;
}
UINT64
EFIAPI
InternalMathMultU64x64 (
IN UINT64 Multiplicand,
IN UINT64 Multiplier
)
{
return Multiplicand * Multiplier;
}
UINT64
EFIAPI
InternalMathDivU64x32 (
IN UINT64 Dividend,
IN UINT32 Divisor
)
{
return Dividend / Divisor;
}
UINT32
EFIAPI
InternalMathModU64x32 (
IN UINT64 Dividend,
IN UINT32 Divisor
)
{
return (UINT32)(Dividend % Divisor);
}
UINT64
EFIAPI
InternalMathDivRemU64x32 (
IN UINT64 Dividend,
IN UINT32 Divisor,
OUT UINT32 *Remainder
)
{
if (Remainder != NULL) {
*Remainder = (UINT32)(Dividend % Divisor);
}
return Dividend / Divisor;
}
UINT64
EFIAPI
InternalMathDivRemU64x64 (
IN UINT64 Dividend,
IN UINT64 Divisor,
OUT UINT64 *Remainder
)
{
if (Remainder != NULL) {
*Remainder = Dividend % Divisor;
}
return Dividend / Divisor;
}
INT64
EFIAPI
InternalMathDivRemS64x64 (
IN INT64 Dividend,
IN INT64 Divisor,
OUT INT64 *Remainder
)
{
if (Remainder != NULL) {
*Remainder = Dividend % Divisor;
}
return Dividend / Divisor;
}
|
