minix/lib/ansi/div.c

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2005-04-21 16:53:53 +02:00
/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/* $Header$ */
#include <stdlib.h>
static int tmp = -1;
div_t
div(register int numer, register int denom)
{
div_t r;
/* The assignment of tmp should not be optimized !! */
if (tmp == -1) {
tmp = (tmp / 2 == 0);
}
if (numer == 0) {
r.quot = numer / denom; /* might trap if denom == 0 */
r.rem = numer % denom;
} else if ( !tmp && ((numer < 0) != (denom < 0))) {
r.quot = (numer / denom) + 1;
r.rem = numer - (numer / denom + 1) * denom;
} else {
r.quot = numer / denom;
r.rem = numer % denom;
}
return r;
}