| 1 |
greg |
2.22 |
/* RCSid $Id: random.h,v 2.21 2015/05/27 08:42:06 greg Exp $ */
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| 2 |
greg |
1.1 |
/*
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| 3 |
greg |
1.4 |
* random.h - header file for random(3) and urand() function.
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| 4 |
greg |
2.8 |
*/
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| 5 |
schorsch |
2.12 |
#ifndef _RAD_RANDOM_H_
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#define _RAD_RANDOM_H_
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| 7 |
greg |
2.22 |
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| 8 |
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#include <stdlib.h>
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| 9 |
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| 10 |
schorsch |
2.12 |
#ifdef __cplusplus
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| 11 |
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extern "C" {
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| 12 |
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#endif
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| 13 |
greg |
1.1 |
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| 14 |
schorsch |
2.11 |
#ifdef _WIN32
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| 15 |
greg |
1.3 |
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| 16 |
greg |
2.10 |
#if (RAND_MAX <= 65536)
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| 17 |
greg |
2.3 |
#define random() ((long)rand()<<16^(long)rand()<<6^(long)rand()>>4)
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| 18 |
greg |
2.10 |
#else
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| 19 |
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#define random() rand()
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| 20 |
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#endif
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| 21 |
gwlarson |
2.7 |
#define srandom(s) srand((unsigned)(s))
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| 22 |
greg |
2.2 |
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| 23 |
greg |
2.18 |
#define frandom() (rand()*(1./(RAND_MAX+.5)))
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| 24 |
greg |
2.2 |
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| 25 |
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#else
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| 26 |
greg |
1.3 |
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| 27 |
greg |
2.2 |
#define random() lrand48()
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| 28 |
gwlarson |
2.7 |
#define srandom(s) srand48((long)(s))
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| 29 |
greg |
2.2 |
#define frandom() drand48()
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| 30 |
greg |
1.3 |
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| 31 |
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#endif
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| 32 |
greg |
1.4 |
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| 33 |
gregl |
2.6 |
extern unsigned short *urperm;
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| 34 |
greg |
2.8 |
extern int urmask;
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| 35 |
gregl |
2.5 |
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| 36 |
greg |
2.20 |
#define urand(i) (urmask ? (urperm[(i)&urmask]+frandom())/(urmask+1.) \
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| 37 |
greg |
2.16 |
: frandom())
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| 38 |
greg |
2.8 |
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| 39 |
greg |
2.14 |
extern int initurand(int size);
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| 40 |
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| 41 |
greg |
2.8 |
/* defined in urand.c */
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| 42 |
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extern int ilhash(int *d, int n);
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/* defined in urind.c */
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extern int urind(int s, int i);
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| 45 |
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/* defined in multisamp.c */
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| 46 |
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extern void multisamp(double t[], int n, double r);
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| 47 |
gregl |
2.5 |
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| 48 |
schorsch |
2.12 |
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| 49 |
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#ifdef __cplusplus
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| 50 |
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}
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| 51 |
greg |
2.4 |
#endif
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| 52 |
schorsch |
2.12 |
#endif /* _RAD_RANDOM_H_ */
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| 53 |
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