17c5522d18
This change results in better code on the i386, m68k, & ns32k, and equivalent code on the sparc.
74 lines
2.6 KiB
C
74 lines
2.6 KiB
C
/* $NetBSD: divdi3.c,v 1.3 1996/06/01 02:24:29 jtc Exp $ */
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)divdi3.c 8.1 (Berkeley) 6/4/93";
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#else
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static char rcsid[] = "$NetBSD: divdi3.c,v 1.3 1996/06/01 02:24:29 jtc Exp $";
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include "quad.h"
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/*
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* Divide two signed quads.
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* ??? if -1/2 should produce -1 on this machine, this code is wrong
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*/
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quad_t
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__divdi3(a, b)
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quad_t a, b;
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{
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u_quad_t ua, ub, uq;
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int neg = 0;
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ua = a;
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ub = b;
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if (a < 0)
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ua = -ua, neg ^= 1;
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if (b < 0)
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ub = -ub, neg ^= 1;
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uq = __qdivrem(ua, ub, (u_quad_t *)0);
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if (neg)
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uq = - uq;
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return uq;
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}
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