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#include "randomSPRNG.hpp" |
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#include "simError.h" |
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#ifdef IS_MPI |
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#include "mpiSimulation.hpp" |
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#endif |
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/* randomStreamSPRNF creates a new SPRNG stream for random numbers |
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*/ |
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|
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int ranStreamSPRNG::nSPRNGStreams; |
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int randomSPRNG::nStreamsInitialized; |
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|
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randomStreamSPRNG::randomStreamSPRNG(){ |
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randomSPRNG::randomSPRNG(iseed){ |
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#ifdef IS_MPI |
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nStreamsInitialized++; |
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//Fix this |
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#error "Fix instance of mpiSimulation in randomSPRNG" |
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nSPRNGStreams = getnumberProcessors(); |
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myStreamNumber = nStreamsInitialized*(getMyNode() + nSPRNGStreams); |
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|
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#else |
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nSPRNGStreams++; |
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nStreamsInitialized++; |
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nSPRNGStreams = 1; |
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myStreamNumber = nSPRNGStreams; |
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thisStream = init_sprng(GTYPE,streamnum,nstreams,SEED,SPRNG_DEFAULT); |
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#endif |
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|
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thisStream = init_sprng(GTYPE,myStreamNumber,nSPRNGStreams, |
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iseed,SPRNG_DEFAULT); |
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} |
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|
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randomStreamSPRNG::~randomStreamSPRNG(){ |
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randomSPRNG::~randomSPRNG(){ |
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|
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free_sprng(int *thisStream); |
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nSPRNGStreams--; |
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nStreamsInitialized--; |
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|
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} |
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|
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< |
double getRanStreamSPRNG(){ |
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double randomSPRNG::getRandom(){ |
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double ranNum; |
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nanNum = sprng(thisStream); |
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ranNum = sprng(thisStream); |
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return ranNum; |
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} |
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|
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|
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// Gaussian SPRNG class... |
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|
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gaussianSPRNG::gaussianSPRNG() : randomSPRNG() |
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{ |
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} |
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|
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gaussianSPRNG::~gaussianSPRNG() : ~randomSPRNG() |
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{ |
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} |
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|
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double gaussianSPRNG::getGaussian(){ |
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double ranNum1; |
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double ranNum2; |
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double gaussianNumber; |
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double R1; |
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double R2; |
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|
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ranNum1 = getRandom(); |
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ranNum2 = getRandom(); |
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|
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gaussianNumber = sqrt(-2.0 * log(ranNum1)) * cos(2 * M_PI * ranNum2); |
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|
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return gaussianNumber; |
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} |
