diff options
| author |   mickey <mickey@openbsd.org> | 2004-11-28 07:23:41 +0000 |
|---|---|---|
| committer | mickey <mickey@openbsd.org> | 2004-11-28 07:23:41 +0000 |
| commit | f6a3c9b1fa71b1a71957242d0da17e5e1f46240e (patch) | |
| tree | 923ecdd7af5dbaae56d4af536e50c2c9c2c46dba /sys/lib/libkern/moddi3.c | |
| parent | a tiny hppa64 bit (diff) | |
| download | wireguard-openbsd-f6a3c9b1fa71b1a71957242d0da17e5e1f46240e.tar.xz wireguard-openbsd-f6a3c9b1fa71b1a71957242d0da17e5e1f46240e.zip | |
sync from libc
Diffstat (limited to 'sys/lib/libkern/moddi3.c')
| -rw-r--r-- | sys/lib/libkern/moddi3.c | 29 |
1 files changed, 11 insertions, 18 deletions
diff --git a/sys/lib/libkern/moddi3.c b/sys/lib/libkern/moddi3.c index 948215fef41..88f5ab39001 100644 --- a/sys/lib/libkern/moddi3.c +++ b/sys/lib/libkern/moddi3.c @@ -1,6 +1,3 @@ -/* $OpenBSD: moddi3.c,v 1.4 2004/08/07 00:38:32 deraadt Exp $ */ -/* $NetBSD: moddi3.c,v 1.5 1995/10/07 09:26:31 mycroft Exp $ */ - /*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. @@ -35,11 +32,7 @@ */ #if defined(LIBC_SCCS) && !defined(lint) -#if 0 -static char sccsid[] = "@(#)moddi3.c 8.1 (Berkeley) 6/4/93"; -#else -static char rcsid[] = "$OpenBSD: moddi3.c,v 1.4 2004/08/07 00:38:32 deraadt Exp $"; -#endif +static char rcsid[] = "$OpenBSD: moddi3.c,v 1.5 2004/11/28 07:23:41 mickey Exp $"; #endif /* LIBC_SCCS and not lint */ #include "quad.h" @@ -47,23 +40,23 @@ static char rcsid[] = "$OpenBSD: moddi3.c,v 1.4 2004/08/07 00:38:32 deraadt Exp /* * Return remainder after dividing two signed quads. * - * XXX - * If -1/2 should produce -1 on this machine, this code is wrong. + * XXX we assume a % b < 0 iff a < 0, but this is actually machine-dependent. */ quad_t __moddi3(quad_t a, quad_t b) { u_quad_t ua, ub, ur; - int neg; + int neg = 0; + + ua = a; + ub = b; if (a < 0) - ua = -(u_quad_t)a, neg = 1; - else - ua = a, neg = 0; + ua = -ua, neg ^= 1; if (b < 0) - ub = -(u_quad_t)b, neg ^= 1; - else - ub = b; + ub = -ub; (void)__qdivrem(ua, ub, &ur); - return (neg ? -ur : ur); + if (neg) + ur = -ur; + return (ur); } |