1 | /*-␊ |
2 | * Copyright (c) 1992, 1993␊ |
3 | *␉The Regents of the University of California. All rights reserved.␊ |
4 | *␊ |
5 | * This software was developed by the Computer Systems Engineering group␊ |
6 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and␊ |
7 | * contributed to Berkeley.␊ |
8 | *␊ |
9 | * Redistribution and use in source and binary forms, with or without␊ |
10 | * modification, are permitted provided that the following conditions␊ |
11 | * are met:␊ |
12 | * 1. Redistributions of source code must retain the above copyright␊ |
13 | * notice, this list of conditions and the following disclaimer.␊ |
14 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
15 | * notice, this list of conditions and the following disclaimer in the␊ |
16 | * documentation and/or other materials provided with the distribution.␊ |
17 | * 3. All advertising materials mentioning features or use of this software␊ |
18 | * must display the following acknowledgement:␊ |
19 | *␉This product includes software developed by the University of␊ |
20 | *␉California, Berkeley and its contributors.␊ |
21 | * 4. Neither the name of the University nor the names of its contributors␊ |
22 | * may be used to endorse or promote products derived from this software␊ |
23 | * without specific prior written permission.␊ |
24 | *␊ |
25 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND␊ |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE␊ |
27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE␊ |
28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE␊ |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL␊ |
30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS␊ |
31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)␊ |
32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT␊ |
33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY␊ |
34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF␊ |
35 | * SUCH DAMAGE.␊ |
36 | *␊ |
37 | * $FreeBSD: src/sys/libkern/moddi3.c,v 1.7 1999/08/28 00:46:34 peter Exp $␊ |
38 | */␊ |
39 | ␊ |
40 | #include "quad.h"␊ |
41 | ␊ |
42 | /*␊ |
43 | * Return remainder after dividing two signed quads.␊ |
44 | *␊ |
45 | * XXX␊ |
46 | * If -1/2 should produce -1 on this machine, this code is wrong.␊ |
47 | */␊ |
48 | quad_t␊ |
49 | __moddi3(a, b)␊ |
50 | quad_t a, b;␊ |
51 | {␊ |
52 | ␉u_quad_t ua, ub, ur;␊ |
53 | ␉int neg;␊ |
54 | ␊ |
55 | ␉if (a < 0)␊ |
56 | ␉␉ua = -(u_quad_t)a, neg = 1;␊ |
57 | ␉else␊ |
58 | ␉␉ua = a, neg = 0;␊ |
59 | ␉if (b < 0)␊ |
60 | ␉␉ub = -(u_quad_t)b;␊ |
61 | ␉else␊ |
62 | ␉␉ub = b;␊ |
63 | ␉(void)__qdivrem(ua, ub, &ur);␊ |
64 | ␉return (neg ? -ur : ur);␊ |
65 | } |