OpenCorePkg/User/Library/UserMath.c

/** @file
  Copyright (c) 2020, PMheart. All rights reserved.
  SPDX-License-Identifier: BSD-3-Clause
**/

#include <Uefi.h>
#include <Library/UefiLib.h>
#include <Library/UefiApplicationEntryPoint.h>
#include <Library/DebugLib.h>

UINT64
EFIAPI
DivU64x32 (
  IN      UINT64  Dividend,
  IN      UINT32  Divisor
  )
{
  ASSERT (Divisor != 0);

  return Dividend / Divisor;
}

UINT64
EFIAPI
DivU64x32Remainder (
  IN      UINT64  Dividend,
  IN      UINT32  Divisor,
  OUT     UINT32  *Remainder OPTIONAL
  )
{
  ASSERT (Divisor != 0);

  if (Remainder != NULL) {
    *Remainder = (UINT32)(Dividend % Divisor);
  }

  return Dividend / Divisor;
}

INT64
EFIAPI
DivS64x64Remainder (
  IN      INT64  Dividend,
  IN      INT64  Divisor,
  OUT     INT64  *Remainder  OPTIONAL
  )
{
  ASSERT (Divisor != 0);

  if (Remainder != NULL) {
    *Remainder = Dividend % Divisor;
  }

  return Dividend / Divisor;
}

UINT64
EFIAPI
DivU64x64Remainder (
  IN      UINT64  Dividend,
  IN      UINT64  Divisor,
  OUT     UINT64  *Remainder OPTIONAL
  )
{
  ASSERT (Divisor != 0);

  if (Remainder != NULL) {
    *Remainder = Dividend % Divisor;
  }

  return Dividend / Divisor;
}

UINT64
EFIAPI
LShiftU64 (
  IN      UINT64  Operand,
  IN      UINTN   Count
  )
{
  return Operand << Count;
}

UINT64
EFIAPI
RShiftU64 (
  IN      UINT64  Operand,
  IN      UINTN   Count
  )
{
  return Operand >> Count;
}

UINT64
EFIAPI
MultU64x32 (
  IN      UINT64  Multiplicand,
  IN      UINT32  Multiplier
  )
{
  return Multiplicand * Multiplier;
}

INT64
EFIAPI
MultS64x64 (
  IN      INT64  Multiplicand,
  IN      INT64  Multiplier
  )
{
  return Multiplicand * Multiplier;
}

UINT64
EFIAPI
MultU64x64 (
  IN      UINT64  Multiplicand,
  IN      UINT64  Multiplier
  )
{
  return Multiplicand * Multiplier;
}

UINT64
SwapBytes64 (
  UINT64  Operand
  )
{
 #ifdef WIN32
  return _byteswap_uint64 (Operand);
 #else
  return __builtin_bswap64 (Operand);
 #endif
}