projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 RG |
1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | */ | |
| 33 | ||
| 34 | #ifndef lint | |
| 35 | static char sccsid[] = "@(#)roll.c 5.5 (Berkeley) 6/1/90"; | |
| 36 | #endif /* not lint */ | |
| 37 | ||
| 38 | /* | |
| 39 | * This routine rolls ndie nside-sided dice. | |
| 40 | */ | |
| 41 | ||
| 42 | # define reg register | |
| 43 | ||
| 78ed81a3 | 44 | # if !defined(vax) && !defined(tahoe) && !defined(i386) |
| 15637ed4 RG |
45 | # define MAXRAND 32767L |
| 46 | ||
| 47 | roll(ndie, nsides) | |
| 48 | int ndie, nsides; { | |
| 49 | ||
| 50 | reg long tot; | |
| 51 | reg unsigned n, r; | |
| 52 | ||
| 53 | tot = 0; | |
| 54 | n = ndie; | |
| 55 | while (n--) | |
| 56 | tot += rand(); | |
| 57 | return (int) ((tot * (long) nsides) / ((long) MAXRAND + 1)) + ndie; | |
| 58 | } | |
| 59 | ||
| 60 | # else | |
| 61 | ||
| 62 | roll(ndie, nsides) | |
| 63 | reg int ndie, nsides; { | |
| 64 | ||
| 65 | reg int tot, r; | |
| 66 | reg double num_sides; | |
| 67 | ||
| 68 | num_sides = nsides; | |
| 69 | tot = 0; | |
| 70 | while (ndie--) | |
| 71 | tot += (r = rand()) * (num_sides / 017777777777) + 1; | |
| 72 | return tot; | |
| 73 | } | |
| 74 | # endif |