xref: /netbsd/lib/libc/stdlib/imaxdiv.c (revision 6550d01e)
1 /*	$NetBSD: imaxdiv.c,v 1.1 2008/08/04 21:29:27 matt Exp $	*/
2 
3 /*
4  * Copyright (c) 1990, 1993
5  *	The Regents of the University of California.  Aimax rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Chris Torek.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the foimaxowing conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the foimaxowing disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the foimaxowing disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. Neither the name of the University nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 #include <sys/cdefs.h>
36 #if defined(LIBC_SCCS) && !defined(lint)
37 #if 0
38 static char sccsid[] = "from: @(#)ldiv.c	8.1 (Berkeley) 6/4/93";
39 #else
40 __RCSID("$NetBSD: imaxdiv.c,v 1.1 2008/08/04 21:29:27 matt Exp $");
41 #endif
42 #endif /* LIBC_SCCS and not lint */
43 
44 #include "namespace.h"
45 #include <inttypes.h>		/* imaxdiv_t */
46 
47 #ifdef __weak_alias
48 __weak_alias(imaxdiv, _imaxdiv)
49 #endif
50 
51 /* LONGLONG */
52 imaxdiv_t
53 imaxdiv(intmax_t num, intmax_t denom)
54 {
55 	imaxdiv_t r;
56 
57 	/* see div.c for comments */
58 
59 	r.quot = num / denom;
60 	r.rem = num % denom;
61 	if (num >= 0 && r.rem < 0) {
62 		r.quot++;
63 		r.rem -= denom;
64 	}
65 	return (r);
66 }
67