| 4 |
|
*/ |
| 5 |
|
#ifndef _RAD_RANDOM_H_ |
| 6 |
|
#define _RAD_RANDOM_H_ |
| 7 |
+ |
|
| 8 |
+ |
#include <stdlib.h> |
| 9 |
+ |
|
| 10 |
|
#ifdef __cplusplus |
| 11 |
|
extern "C" { |
| 12 |
|
#endif |
| 13 |
|
|
| 11 |
– |
#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 |
– |
#else /* ! NORANDOM */ |
| 22 |
– |
|
| 14 |
|
#ifdef _WIN32 |
| 15 |
|
|
| 16 |
|
#if (RAND_MAX <= 65536) |
| 20 |
|
#endif |
| 21 |
|
#define srandom(s) srand((unsigned)(s)) |
| 22 |
|
|
| 23 |
< |
#define frandom() (rand()*(1./RAND_MAX)) |
| 23 |
> |
#define frandom() (rand()*(1./(RAND_MAX+.5))) |
| 24 |
|
|
| 25 |
|
#else |
| 35 |
– |
#ifdef BSD |
| 26 |
|
|
| 37 |
– |
extern long random(); |
| 38 |
– |
|
| 39 |
– |
#define frandom() (random()*(1./2147483648.)) |
| 40 |
– |
|
| 41 |
– |
#else |
| 42 |
– |
|
| 43 |
– |
extern long lrand48(); |
| 44 |
– |
extern double drand48(); |
| 45 |
– |
|
| 27 |
|
#define random() lrand48() |
| 28 |
|
#define srandom(s) srand48((long)(s)) |
| 29 |
|
#define frandom() drand48() |
| 30 |
|
|
| 31 |
|
#endif |
| 51 |
– |
#endif |
| 32 |
|
|
| 53 |
– |
#ifdef MC |
| 54 |
– |
|
| 55 |
– |
#define urand(i) frandom() |
| 56 |
– |
#define initurand(n) (n) |
| 57 |
– |
|
| 58 |
– |
#else /* ! MC */ |
| 59 |
– |
|
| 33 |
|
extern unsigned short *urperm; |
| 34 |
|
extern int urmask; |
| 35 |
|
|
| 36 |
< |
#define urand(i) ((urperm[(i)&urmask]+frandom())/(urmask+1)) |
| 36 |
> |
#define urand(i) (urmask ? (urperm[(i)&urmask]+frandom())/(urmask+1.) \ |
| 37 |
> |
: frandom()) |
| 38 |
|
|
| 39 |
|
extern int initurand(int size); |
| 66 |
– |
|
| 67 |
– |
#endif /* ! MC */ |
| 68 |
– |
|
| 69 |
– |
#endif /* ! NORANDOM */ |
| 40 |
|
|
| 41 |
|
/* defined in urand.c */ |
| 42 |
|
extern int ilhash(int *d, int n); |
