| 1 |
greg |
2.14 |
/* RCSid $Id: random.h,v 2.13 2003/06/27 06:53:21 greg Exp $ */ |
| 2 |
greg |
1.1 |
/* |
| 3 |
greg |
1.4 |
* random.h - header file for random(3) and urand() function. |
| 4 |
greg |
2.8 |
*/ |
| 5 |
schorsch |
2.12 |
#ifndef _RAD_RANDOM_H_ |
| 6 |
|
|
#define _RAD_RANDOM_H_ |
| 7 |
|
|
#ifdef __cplusplus |
| 8 |
|
|
extern "C" { |
| 9 |
|
|
#endif |
| 10 |
greg |
1.1 |
|
| 11 |
greg |
2.8 |
#ifdef NORANDOM |
| 12 |
|
|
|
| 13 |
|
|
#undef random |
| 14 |
|
|
#define random() 1073741820 |
| 15 |
|
|
#undef srandom |
| 16 |
|
|
#define srandom(s) (s) |
| 17 |
|
|
#define frandom() 0.5 |
| 18 |
|
|
#define urand(i) 0.5 |
| 19 |
|
|
#define initurand(n) (n) |
| 20 |
|
|
|
| 21 |
greg |
2.14 |
#else /* ! NORANDOM */ |
| 22 |
greg |
2.8 |
|
| 23 |
schorsch |
2.11 |
#ifdef _WIN32 |
| 24 |
greg |
1.3 |
|
| 25 |
greg |
2.10 |
#if (RAND_MAX <= 65536) |
| 26 |
greg |
2.3 |
#define random() ((long)rand()<<16^(long)rand()<<6^(long)rand()>>4) |
| 27 |
greg |
2.10 |
#else |
| 28 |
|
|
#define random() rand() |
| 29 |
|
|
#endif |
| 30 |
gwlarson |
2.7 |
#define srandom(s) srand((unsigned)(s)) |
| 31 |
greg |
2.2 |
|
| 32 |
greg |
2.10 |
#define frandom() (rand()*(1./RAND_MAX)) |
| 33 |
greg |
2.2 |
|
| 34 |
|
|
#else |
| 35 |
|
|
#ifdef BSD |
| 36 |
|
|
|
| 37 |
greg |
1.1 |
extern long random(); |
| 38 |
|
|
|
| 39 |
greg |
2.2 |
#define frandom() (random()*(1./2147483648.)) |
| 40 |
greg |
1.3 |
|
| 41 |
|
|
#else |
| 42 |
|
|
|
| 43 |
|
|
extern long lrand48(); |
| 44 |
|
|
extern double drand48(); |
| 45 |
|
|
|
| 46 |
greg |
2.2 |
#define random() lrand48() |
| 47 |
gwlarson |
2.7 |
#define srandom(s) srand48((long)(s)) |
| 48 |
greg |
2.2 |
#define frandom() drand48() |
| 49 |
greg |
1.3 |
|
| 50 |
|
|
#endif |
| 51 |
greg |
2.2 |
#endif |
| 52 |
greg |
1.4 |
|
| 53 |
greg |
2.4 |
#ifdef MC |
| 54 |
gregl |
2.5 |
|
| 55 |
greg |
2.4 |
#define urand(i) frandom() |
| 56 |
gregl |
2.5 |
#define initurand(n) (n) |
| 57 |
|
|
|
| 58 |
greg |
2.14 |
#else /* ! MC */ |
| 59 |
gregl |
2.5 |
|
| 60 |
gregl |
2.6 |
extern unsigned short *urperm; |
| 61 |
greg |
2.8 |
extern int urmask; |
| 62 |
gregl |
2.5 |
|
| 63 |
greg |
2.2 |
#define urand(i) ((urperm[(i)&urmask]+frandom())/(urmask+1)) |
| 64 |
greg |
2.8 |
|
| 65 |
greg |
2.14 |
extern int initurand(int size); |
| 66 |
|
|
|
| 67 |
|
|
#endif /* ! MC */ |
| 68 |
greg |
2.8 |
|
| 69 |
greg |
2.14 |
#endif /* ! NORANDOM */ |
| 70 |
greg |
2.8 |
|
| 71 |
|
|
/* defined in urand.c */ |
| 72 |
|
|
extern int ilhash(int *d, int n); |
| 73 |
|
|
/* defined in urind.c */ |
| 74 |
|
|
extern int urind(int s, int i); |
| 75 |
|
|
/* defined in multisamp.c */ |
| 76 |
|
|
extern void multisamp(double t[], int n, double r); |
| 77 |
gregl |
2.5 |
|
| 78 |
schorsch |
2.12 |
|
| 79 |
|
|
#ifdef __cplusplus |
| 80 |
|
|
} |
| 81 |
greg |
2.4 |
#endif |
| 82 |
schorsch |
2.12 |
#endif /* _RAD_RANDOM_H_ */ |
| 83 |
|
|
|
