11541Srgrimes/*-
21541Srgrimes * Copyright (c) 1992, 1993
31541Srgrimes *	The Regents of the University of California.  All rights reserved.
41541Srgrimes *
51541Srgrimes * This software was developed by the Computer Systems Engineering group
61541Srgrimes * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
71541Srgrimes * contributed to Berkeley.
81541Srgrimes *
91541Srgrimes * Redistribution and use in source and binary forms, with or without
101541Srgrimes * modification, are permitted provided that the following conditions
111541Srgrimes * are met:
121541Srgrimes * 1. Redistributions of source code must retain the above copyright
131541Srgrimes *    notice, this list of conditions and the following disclaimer.
141541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright
151541Srgrimes *    notice, this list of conditions and the following disclaimer in the
161541Srgrimes *    documentation and/or other materials provided with the distribution.
171541Srgrimes * 4. Neither the name of the University nor the names of its contributors
181541Srgrimes *    may be used to endorse or promote products derived from this software
191541Srgrimes *    without specific prior written permission.
201541Srgrimes *
211541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
221541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
231541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
241541Srgrimes * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
251541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
261541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
271541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
281541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
291541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
301541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
311541Srgrimes * SUCH DAMAGE.
321541Srgrimes */
331541Srgrimes
34116189Sobrien#include <sys/cdefs.h>
35116189Sobrien__FBSDID("$FreeBSD$");
36116189Sobrien
3718207Sbde#include <libkern/quad.h>
381541Srgrimes
391541Srgrimes/*
401541Srgrimes * Divide two signed quads.
411541Srgrimes * ??? if -1/2 should produce -1 on this machine, this code is wrong
421541Srgrimes */
431541Srgrimesquad_t
441541Srgrimes__divdi3(a, b)
451541Srgrimes	quad_t a, b;
461541Srgrimes{
471541Srgrimes	u_quad_t ua, ub, uq;
481541Srgrimes	int neg;
491541Srgrimes
501541Srgrimes	if (a < 0)
511541Srgrimes		ua = -(u_quad_t)a, neg = 1;
521541Srgrimes	else
531541Srgrimes		ua = a, neg = 0;
541541Srgrimes	if (b < 0)
551541Srgrimes		ub = -(u_quad_t)b, neg ^= 1;
561541Srgrimes	else
571541Srgrimes		ub = b;
581541Srgrimes	uq = __qdivrem(ua, ub, (u_quad_t *)0);
591541Srgrimes	return (neg ? -uq : uq);
601541Srgrimes}
61