EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/MultS64x64.c

   1 /*++
   2
   3 Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR>
   4 This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12
  13 Module Name:
  14
  15   MultS64x64.c
  16
  17 Abstract:
  18
  19   Math worker functions.
  20
  21 --*/
  22
  23 #include "BaseLibInternals.h"
  24
  25 /**
  26   Multiples a 64-bit signed integer by a 64-bit signed integer and generates a
  27   64-bit signed result.
  28
  29   This function multiples the 64-bit signed value Multiplicand by the 64-bit
  30   signed value Multiplier and generates a 64-bit signed result. This 64-bit
  31   signed result is returned.
  32
  33   If the result overflows, then ASSERT().
  34
  35   @param  Multiplicand  A 64-bit signed value.
  36   @param  Multiplier    A 64-bit signed value.
  37
  38   @return Multiplicand * Multiplier
  39
  40 **/
  41 INT64
  42 EFIAPI
  43 MultS64x64 (
  44   IN      INT64                     Multiplicand,
  45   IN      INT64                     Multiplier
  46   )
  47 {
  48   return (INT64)MultU64x64 ((UINT64) Multiplicand, (UINT64) Multiplier);
  49 }