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1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
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3 | * All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
6 | * provided that this notice is preserved and that due credit is given | |
7 | * to the University of California at Berkeley. The name of the University | |
8 | * may not be used to endorse or promote products derived from this | |
9 | * software without specific prior written permission. This software | |
10 | * is provided ``as is'' without express or implied warranty. | |
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11 | */ |
12 | ||
db247e8f | 13 | #ifndef lint |
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14 | static char sccsid[] = "@(#)ranf.c 5.2 (Berkeley) %G%"; |
15 | #endif /* not lint */ | |
db247e8f | 16 | |
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17 | # include <stdio.h> |
18 | ||
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19 | ranf(max) |
20 | int max; | |
21 | { | |
22 | register int t; | |
23 | ||
24 | if (max <= 0) | |
25 | return (0); | |
26 | t = rand() >> 5; | |
27 | return (t % max); | |
28 | } | |
29 | ||
30 | ||
31 | double franf() | |
32 | { | |
33 | double t; | |
34 | t = rand() & 077777; | |
35 | return (t / 32767.0); | |
36 | } |