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/* $OpenBSD: roll.c,v 1.2 1998/09/20 23:36:56 pjanzen Exp $ */
/* $NetBSD: roll.c,v 1.5 1995/03/23 08:35:13 cgd Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)roll.c 8.1 (Berkeley) 5/31/93";
#else
static char rcsid[] = "$OpenBSD: roll.c,v 1.2 1998/09/20 23:36:56 pjanzen Exp $";
#endif
#endif /* not lint */
#include <stdlib.h>
/*
* This routine rolls ndie nside-sided dice.
*/
#if defined(pdp11)
#define MAXRAND 32767L
int
roll(ndie, nsides)
int ndie, nsides;
{
long tot;
unsigned n, r;
tot = 0;
n = ndie;
while (n--)
tot += random();
return (int) ((tot * (long) nsides) / ((long) MAXRAND + 1)) + ndie;
}
#else
int
roll(ndie, nsides)
int ndie, nsides;
{
int tot, r;
double num_sides;
num_sides = nsides;
tot = 0;
while (ndie--)
tot += (r = random()) * (num_sides / RAND_MAX) + 1;
return tot;
}
#endif
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