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 * %sccs.include.redist.c%
10 */
11
12 #if defined(LIBC_SCCS) && !defined(lint)
13 static char sccsid[] = "@(#)moddi3.c 8.1 (Berkeley) 06/04/93";
14 #endif /* LIBC_SCCS and not lint */
15
16 #include "quad.h"
17
18 /*
19 * Return remainder after dividing two signed quads.
20 *
21 * XXX
22 * If -1/2 should produce -1 on this machine, this code is wrong.
23 */
24 quad_t
__moddi3(a,b)25 __moddi3(a, b)
26 quad_t a, b;
27 {
28 u_quad_t ua, ub, ur;
29 int neg;
30
31 if (a < 0)
32 ua = -(u_quad_t)a, neg = 1;
33 else
34 ua = a, neg = 0;
35 if (b < 0)
36 ub = -(u_quad_t)b, neg ^= 1;
37 else
38 ub = b;
39 (void)__qdivrem(ua, ub, &ur);
40 return (neg ? -ur : ur);
41 }
42