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- 1.1
- date 92.06.08.17.01.06; author mwild; state Exp;
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- @initial checkin
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- 1.1
- log
- @Initial revision
- @
- text
- @/*
- * Copyright (c) 1990 Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that: (1) source distributions retain this entire copyright
- * notice and comment, and (2) distributions including binaries display
- * the following acknowledgement: ``This product includes software
- * developed by the University of California, Berkeley and its contributors''
- * in the documentation or other materials provided with the distribution
- * and in all advertising materials mentioning features or use of this
- * software. Neither the name of the University nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- static char sccsid[] = "@@(#)div.c 5.1 (Berkeley) 5/16/90";
- #endif /* LIBC_SCCS and not lint */
-
- #define KERNEL
- #include "ixemul.h"
-
- #include <stdlib.h> /* div_t */
-
- /*
- * I AM NOT SURE THIS IS COMPLETELY PORTABLE
- * (or that it is even right)
- */
- div_t const
- div(int num, int denom)
- {
- div_t r;
-
- /* avoid deep thought */
- if (num > 0 && denom < 0) {
- num = -num;
- denom = -denom;
- }
- r.quot = num / denom;
- r.rem = num % denom;
- if (num < 0 && denom > 0) {
- /*
- * Machine division and remainer may work either way. The
- * ANSI standard says that |r.quot| < |n/d| (where n/d
- * computed in infinite precision). If the remainder is
- * positive, we got the `wrong' answer, so fix it.
- */
- if (r.rem > 0) {
- r.quot++;
- r.rem -= denom;
- }
- }
- return (r);
- }
- @
-