Commit | Line | Data |
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4318c66e | 1 | /* $NetBSD: rnd.c,v 1.6 2009/06/07 18:30:39 dholland Exp $ */ |
984263bc | 2 | |
4318c66e SW |
3 | /* |
4 | * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica, | |
5 | * Amsterdam | |
6 | * All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions are | |
10 | * met: | |
11 | * | |
12 | * - Redistributions of source code must retain the above copyright notice, | |
13 | * this list of conditions and the following disclaimer. | |
14 | * | |
15 | * - Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in the | |
17 | * documentation and/or other materials provided with the distribution. | |
18 | * | |
19 | * - Neither the name of the Stichting Centrum voor Wiskunde en | |
20 | * Informatica, nor the names of its contributors may be used to endorse or | |
21 | * promote products derived from this software without specific prior | |
22 | * written permission. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
25 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
26 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
27 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | |
28 | * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
29 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
30 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
31 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
32 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
33 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
34 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
35 | */ | |
36 | ||
37 | /* | |
38 | * Copyright (c) 1982 Jay Fenlason <hack@gnu.org> | |
39 | * All rights reserved. | |
40 | * | |
41 | * Redistribution and use in source and binary forms, with or without | |
42 | * modification, are permitted provided that the following conditions | |
43 | * are met: | |
44 | * 1. Redistributions of source code must retain the above copyright | |
45 | * notice, this list of conditions and the following disclaimer. | |
46 | * 2. Redistributions in binary form must reproduce the above copyright | |
47 | * notice, this list of conditions and the following disclaimer in the | |
48 | * documentation and/or other materials provided with the distribution. | |
49 | * 3. The name of the author may not be used to endorse or promote products | |
50 | * derived from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, | |
53 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
54 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL | |
55 | * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
56 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
57 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
58 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
59 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
60 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
61 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
62 | */ | |
63 | ||
64 | #include <stdlib.h> | |
c7106d58 | 65 | #include "hack.h" |
4318c66e | 66 | #include "extern.h" |
984263bc | 67 | |
4318c66e | 68 | #define RND(x) ((random()>>3) % x) |
984263bc | 69 | |
c7106d58 PA |
70 | int |
71 | rn1(int x, int y) | |
984263bc | 72 | { |
6693db17 | 73 | return (RND(x) + y); |
984263bc MD |
74 | } |
75 | ||
c7106d58 PA |
76 | int |
77 | rn2(int x) | |
984263bc | 78 | { |
6693db17 | 79 | return (RND(x)); |
984263bc MD |
80 | } |
81 | ||
c7106d58 PA |
82 | int |
83 | rnd(int x) | |
984263bc | 84 | { |
6693db17 | 85 | return (RND(x) + 1); |
984263bc MD |
86 | } |
87 | ||
c7106d58 PA |
88 | int |
89 | d(int n, int x) | |
984263bc MD |
90 | { |
91 | int tmp = n; | |
92 | ||
6693db17 SW |
93 | while (n--) |
94 | tmp += RND(x); | |
95 | return (tmp); | |
984263bc | 96 | } |