| 20 |
|
erand48() with separate states for photon emission, scattering, and |
| 21 |
|
russian roulette. The pmapSeed() and pmapRandom() macros can be adapted |
| 22 |
|
to other (better?) RNGs. */ |
| 23 |
+ |
|
| 24 |
+ |
#if defined(_WIN32) || defined(BSD) |
| 25 |
+ |
/* Assume no erand48(), so use standard RNG without explicit multistate |
| 26 |
+ |
control; the resulting sequences will be suboptimal */ |
| 27 |
+ |
#include "random.h" |
| 28 |
|
|
| 29 |
< |
#define pmapSeed(seed, state) (state [0] += seed, state [1] += seed, \ |
| 30 |
< |
state [2] += seed) |
| 31 |
< |
#define pmapRandom(state) erand48(state) |
| 29 |
> |
#define pmapSeed(seed, state) (srandom(seed)) |
| 30 |
> |
#define pmapRandom(state) (frandom()) |
| 31 |
> |
#else |
| 32 |
> |
#define pmapSeed(seed, state) (state [0] += seed, state [1] += seed, \ |
| 33 |
> |
state [2] += seed) |
| 34 |
> |
#define pmapRandom(state) erand48(state) |
| 35 |
> |
#endif |
| 36 |
|
|
| 28 |
– |
|
| 37 |
|
|
| 38 |
|
extern unsigned short partState [3], emitState [3], cntState [3], |
| 39 |
|
mediumState [3], scatterState [3], rouletteState [3], |
| 40 |
|
randSeed; |
| 41 |
|
|
| 42 |
|
#endif |
| 43 |
+ |
|
