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878ddf1f | 1 | /** @file\r |
2 | Integer division worker functions for Ia32.\r | |
3 | \r | |
4 | Copyright (c) 2006, Intel Corporation<BR>\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | Module Name: DivS64x64Remainder.c\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include "../BaseLibInternals.h"\r | |
18 | \r | |
1ea5ca46 | 19 | /**\r |
bda7fbcc | 20 | Worker function that Divides a 64-bit signed integer by a 64-bit signed integer and\r |
1ea5ca46 | 21 | generates a 64-bit signed result and a optional 64-bit signed remainder.\r |
22 | \r | |
23 | This function divides the 64-bit unsigned value Dividend by the 64-bit\r | |
24 | unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder\r | |
25 | is not NULL, then the 64-bit unsigned remainder is returned in Remainder.\r | |
26 | This function returns the 64-bit unsigned quotient.\r | |
27 | \r | |
28 | @param Dividend A 64-bit signed value.\r | |
29 | @param Divisor A 64-bit signed value.\r | |
30 | @param Remainder A pointer to a 64-bit signed value. This parameter is\r | |
31 | optional and may be NULL.\r | |
32 | \r | |
33 | @return Dividend / Divisor\r | |
34 | \r | |
35 | **/\r | |
878ddf1f | 36 | INT64\r |
878ddf1f | 37 | InternalMathDivRemS64x64 (\r |
38 | IN INT64 Dividend,\r | |
39 | IN INT64 Divisor,\r | |
1ea5ca46 | 40 | OUT INT64 *Remainder OPTIONAL\r |
878ddf1f | 41 | )\r |
42 | {\r | |
43 | INT64 Quot;\r | |
44 | \r | |
45 | Quot = InternalMathDivRemU64x64 (\r | |
46 | Dividend >= 0 ? Dividend : -Dividend,\r | |
47 | Divisor >= 0 ? Divisor : -Divisor,\r | |
48 | (UINT64 *) Remainder\r | |
49 | );\r | |
50 | if (Remainder != NULL && Dividend < 0) {\r | |
51 | *Remainder = -*Remainder;\r | |
52 | }\r | |
53 | return (Dividend ^ Divisor) >= 0 ? Quot : -Quot;\r | |
54 | }\r |