MdePkg/Library/BaseLib/MultS64x64.c

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