| 3 |
|
|
| 4 |
|
#include "randomSPRNG.hpp" |
| 5 |
|
#include "simError.h" |
| 6 |
+ |
#include "sprng.h" |
| 7 |
|
|
| 8 |
+ |
#ifdef IS_MPI |
| 9 |
+ |
#include "mpiSimulation.hpp" |
| 10 |
+ |
#endif |
| 11 |
|
|
| 12 |
|
/* randomStreamSPRNF creates a new SPRNG stream for random numbers |
| 13 |
|
*/ |
| 14 |
|
|
| 15 |
< |
int ranStreamSPRNG::nSPRNGStreams; |
| 15 |
> |
int randomSPRNG::nStreamsInitialized = 0; |
| 16 |
|
|
| 17 |
< |
randomStreamSPRNG::randomStreamSPRNG(){ |
| 17 |
> |
randomSPRNG::randomSPRNG(int iseed){ |
| 18 |
> |
int newSeed; |
| 19 |
> |
nStreamsInitialized++; |
| 20 |
> |
newSeed = abs(iseed) + nStreamsInitialized; |
| 21 |
> |
if( newSeed < 0 ) newSeed = abs( newSeed ); |
| 22 |
> |
|
| 23 |
|
#ifdef IS_MPI |
| 24 |
|
|
| 25 |
+ |
nSPRNGStreams = mpiSim->getNumberProcessors(); |
| 26 |
+ |
|
| 27 |
+ |
myStreamNumber = mpiSim->getMyNode(); |
| 28 |
+ |
|
| 29 |
|
|
| 30 |
|
|
| 31 |
|
#else |
| 19 |
– |
nSPRNGStreams++; |
| 32 |
|
|
| 33 |
< |
myStreamNumber = nSPRNGStreams; |
| 33 |
> |
nSPRNGStreams = 1; |
| 34 |
> |
myStreamNumber = nStreamsInitialized; |
| 35 |
|
|
| 23 |
– |
thisStream = init_sprng(GTYPE,streamnum,nstreams,SEED,SPRNG_DEFAULT); |
| 24 |
– |
|
| 25 |
– |
|
| 36 |
|
#endif |
| 37 |
+ |
|
| 38 |
+ |
thisStream = init_sprng(GTYPE,myStreamNumber,nSPRNGStreams, |
| 39 |
+ |
newSeed,SPRNG_DEFAULT); |
| 40 |
|
} |
| 41 |
|
|
| 42 |
< |
randomStreamSPRNG::~randomStreamSPRNG(){ |
| 42 |
> |
randomSPRNG::~randomSPRNG(){ |
| 43 |
|
|
| 44 |
< |
free_sprng(int *thisStream); |
| 45 |
< |
nSPRNGStreams--; |
| 44 |
> |
free_sprng(*thisStream); |
| 45 |
> |
nStreamsInitialized--; |
| 46 |
|
|
| 47 |
+ |
} |
| 48 |
|
|
| 49 |
+ |
|
| 50 |
+ |
double randomSPRNG::getRandom(){ |
| 51 |
+ |
return sprng(thisStream); |
| 52 |
|
} |
| 53 |
|
|
| 54 |
|
|
| 55 |
< |
double getRanStreamSPRNG(){ |
| 56 |
< |
double ranNum; |
| 57 |
< |
nanNum = sprng(thisStream); |
| 58 |
< |
return ranNum; |
| 55 |
> |
// Gaussian SPRNG class... |
| 56 |
> |
|
| 57 |
> |
double gaussianSPRNG::getGaussian(){ |
| 58 |
> |
double ranNum1; |
| 59 |
> |
double ranNum2; |
| 60 |
> |
double gaussianNumber; |
| 61 |
> |
|
| 62 |
> |
ranNum1 = getRandom(); |
| 63 |
> |
ranNum2 = getRandom(); |
| 64 |
> |
|
| 65 |
> |
gaussianNumber = sqrt(-2.0 * log(ranNum1)) * cos(2 * M_PI * ranNum2); |
| 66 |
> |
|
| 67 |
> |
return gaussianNumber; |
| 68 |
|
} |
