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git.proxmox.com Git - mirror_edk2.git/blob - MdePkg/Library/BaseLib/Ia32/DivS64x64Remainder.c
2 Integer division worker functions for Ia32.
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
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.
13 Module Name: DivS64x64Remainder.c
17 #include "../BaseLibInternals.h"
20 Worker function that Divides a 64-bit signed integer by a 64-bit signed integer and
21 generates a 64-bit signed result and a optional 64-bit signed remainder.
23 This function divides the 64-bit unsigned value Dividend by the 64-bit
24 unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder
25 is not NULL, then the 64-bit unsigned remainder is returned in Remainder.
26 This function returns the 64-bit unsigned quotient.
28 @param Dividend A 64-bit signed value.
29 @param Divisor A 64-bit signed value.
30 @param Remainder A pointer to a 64-bit signed value. This parameter is
31 optional and may be NULL.
33 @return Dividend / Divisor
37 InternalMathDivRemS64x64 (
40 OUT INT64
*Remainder OPTIONAL
45 Quot
= InternalMathDivRemU64x64 (
46 Dividend
>= 0 ? Dividend
: -Dividend
,
47 Divisor
>= 0 ? Divisor
: -Divisor
,
50 if (Remainder
!= NULL
&& Dividend
< 0) {
51 *Remainder
= -*Remainder
;
53 return (Dividend
^ Divisor
) >= 0 ? Quot
: -Quot
;