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3ec9bc15 | 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 | **/\r | |
14 | \r | |
15 | //\r | |
16 | // Include common header file for this module.\r | |
17 | //\r | |
18 | \r | |
19 | \r | |
20 | #include "../BaseLibInternals.h"\r | |
21 | \r | |
22 | /**\r | |
23 | Worker function that Divides a 64-bit signed integer by a 64-bit signed integer and\r | |
24 | generates a 64-bit signed result and a optional 64-bit signed remainder.\r | |
25 | \r | |
26 | This function divides the 64-bit unsigned value Dividend by the 64-bit\r | |
27 | unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder\r | |
28 | is not NULL, then the 64-bit unsigned remainder is returned in Remainder.\r | |
29 | This function returns the 64-bit unsigned quotient.\r | |
30 | \r | |
31 | @param Dividend A 64-bit signed value.\r | |
32 | @param Divisor A 64-bit signed value.\r | |
33 | @param Remainder A pointer to a 64-bit signed value. This parameter is\r | |
34 | optional and may be NULL.\r | |
35 | \r | |
36 | @return Dividend / Divisor\r | |
37 | \r | |
38 | **/\r | |
39 | INT64\r | |
40 | EFIAPI\r | |
41 | InternalMathDivRemS64x64 (\r | |
42 | IN INT64 Dividend,\r | |
43 | IN INT64 Divisor,\r | |
44 | OUT INT64 *Remainder OPTIONAL\r | |
45 | )\r | |
46 | {\r | |
47 | INT64 Quot;\r | |
48 | \r | |
49 | Quot = InternalMathDivRemU64x64 (\r | |
50 | Dividend >= 0 ? Dividend : -Dividend,\r | |
51 | Divisor >= 0 ? Divisor : -Divisor,\r | |
52 | (UINT64 *) Remainder\r | |
53 | );\r | |
54 | if (Remainder != NULL && Dividend < 0) {\r | |
55 | *Remainder = -*Remainder;\r | |
56 | }\r | |
57 | return (Dividend ^ Divisor) >= 0 ? Quot : -Quot;\r | |
58 | }\r |