blob: e7fe9e28b65e40b2a450088d0f4a84be14598eb8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/** @file
Integer division worker functions for Ia32.
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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.
**/
#include "BaseLibInternals.h"
/**
Worker function that Divides a 64-bit signed integer by a 64-bit signed integer and
generates a 64-bit signed result and a optional 64-bit signed remainder.
This function divides the 64-bit signed value Dividend by the 64-bit
signed value Divisor and generates a 64-bit signed quotient. If Remainder
is not NULL, then the 64-bit signed remainder is returned in Remainder.
This function returns the 64-bit signed quotient.
@param Dividend A 64-bit signed value.
@param Divisor A 64-bit signed value.
@param Remainder A pointer to a 64-bit signed value. This parameter is
optional and may be NULL.
@return Dividend / Divisor
**/
INT64
EFIAPI
InternalMathDivRemS64x64 (
IN INT64 Dividend,
IN INT64 Divisor,
OUT INT64 *Remainder OPTIONAL
)
{
INT64 Quot;
Quot = InternalMathDivRemU64x64 (
Dividend >= 0 ? Dividend : -Dividend,
Divisor >= 0 ? Divisor : -Divisor,
(UINT64 *) Remainder
);
if (Remainder != NULL && Dividend < 0) {
*Remainder = -*Remainder;
}
return (Dividend ^ Divisor) >= 0 ? Quot : -Quot;
}
|
