Make all bucket and overflow addresses unsigned

[unix-history] / usr / src / lib / libc / stdlib / div.c

/*
* Copyright (c) 1990 Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Chris Torek.
*
* %sccs.include.redist.c%
*/

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)div.c       5.1 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

#include <stdlib.h>             /* div_t */

/*
* I AM NOT SURE THIS IS COMPLETELY PORTABLE
* (or that it is even right)
*/
div_t
div(num, denom)
       int num, 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);
}