Import Geant4 10.0.0 source tree
This commit is contained in:
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/*
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Code adapted from:
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http://www.jstatsoft.org/v05/i08/
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Original disclaimer:
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The ziggurat method for RNOR and REXP
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Combine the code below with the main program in which you want
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normal or exponential variates. Then use of RNOR in any expression
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will provide a standard normal variate with mean zero, variance 1,
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while use of REXP in any expression will provide an exponential variate
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with density exp(-x),x>0.
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Before using RNOR or REXP in your main, insert a command such as
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zigset(86947731 );
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with your own choice of seed value>0, rather than 86947731.
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(If you do not invoke zigset(...) you will get all zeros for RNOR and REXP.)
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For details of the method, see Marsaglia and Tsang, "The ziggurat method
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for generating random variables", Journ. Statistical Software.
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*/
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#ifndef RandExpZiggurat_h
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#define RandExpZiggurat_h 1
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#include "CLHEP/Random/Random.h"
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namespace CLHEP {
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/**
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* @author ATLAS
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* @ingroup random
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*/
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class RandExpZiggurat : public HepRandom {
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public:
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inline RandExpZiggurat ( HepRandomEngine& anEngine, double mean=1.0 );
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inline RandExpZiggurat ( HepRandomEngine* anEngine, double mean=1.0 );
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// These constructors should be used to instantiate a RandExpZiggurat
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// distribution object defining a local engine for it.
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// The static generator will be skipped using the non-static methods
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// defined below.
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// If the engine is passed by pointer the corresponding engine object
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// will be deleted by the RandExpZiggurat destructor.
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// If the engine is passed by reference the corresponding engine object
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// will not be deleted by the RandExpZiggurat destructor.
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virtual ~RandExpZiggurat();
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// Destructor
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// Static methods to shoot random values using the static generator
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static float shoot() {return shoot(HepRandom::getTheEngine());};
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static float shoot( float mean ) {return shoot(HepRandom::getTheEngine(),mean);};
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/* ENGINE IS INTRINSIC FLOAT
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static double shoot() {return shoot(HepRandom::getTheEngine());};
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static double shoot( double mean ) {return shoot(HepRandom::getTheEngine(),mean);};
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*/
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static void shootArray ( const int size, float* vect, float mean=1.0 );
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static void shootArray ( const int size, double* vect, double mean=1.0 );
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// Static methods to shoot random values using a given engine
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// by-passing the static generator.
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static inline float shoot( HepRandomEngine* anEngine ) {return ziggurat_REXP(anEngine);};
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static inline float shoot( HepRandomEngine* anEngine, float mean ) {return shoot(anEngine)*mean;};
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/* ENGINE IS INTRINSIC FLOAT
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static inline double shoot( HepRandomEngine* anEngine ) {return ziggurat_REXP(anEngine);};
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static inline double shoot( HepRandomEngine* anEngine, double mean ) {return shoot(anEngine)*mean;};
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*/
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static void shootArray ( HepRandomEngine* anEngine, const int size, float* vect, float mean=1.0 );
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static void shootArray ( HepRandomEngine* anEngine, const int size, double* vect, double mean=1.0 );
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// Methods using the localEngine to shoot random values, by-passing
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// the static generator.
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inline float fire() {return fire(defaultMean);};
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inline float fire( float mean ) {return ziggurat_REXP(localEngine)*mean;};
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/* ENGINE IS INTRINSIC FLOAT
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inline double fire() {return fire(defaultMean);};
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inline double fire( double mean ) {return ziggurat_REXP(localEngine)*mean;};
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*/
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void fireArray ( const int size, float* vect );
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void fireArray ( const int size, double* vect );
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void fireArray ( const int size, float* vect, float mean );
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void fireArray ( const int size, double* vect, double mean );
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virtual double operator()();
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inline float operator()( float mean ) {return fire( mean );};
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// Save and restore to/from streams
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std::ostream & put ( std::ostream & os ) const;
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std::istream & get ( std::istream & is );
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std::string name() const;
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HepRandomEngine & engine();
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static std::string distributionName() {return "RandExpZiggurat";}
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// Provides the name of this distribution class
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static bool ziggurat_init();
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protected:
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//////////////////////////
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// Ziggurat Original code:
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//////////////////////////
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//static unsigned long jz,jsr=123456789;
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//
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//#define SHR3 (jz=jsr, jsr^=(jsr<<13), jsr^=(jsr>>17), jsr^=(jsr<<5),jz+jsr)
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//#define UNI (.5 + (signed) SHR3*.2328306e-9)
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//#define IUNI SHR3
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//
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//static long hz;
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//static unsigned long iz, kn[128], ke[256];
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//static float wn[128],fn[128], we[256],fe[256];
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//
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//#define RNOR (hz=SHR3, iz=hz&127, (fabs(hz)<kn[iz])? hz*wn[iz] : nfix())
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//#define REXP (jz=SHR3, iz=jz&255, ( jz <ke[iz])? jz*we[iz] : efix())
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static unsigned long kn[128], ke[256];
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static float wn[128],fn[128], we[256],fe[256];
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static bool ziggurat_is_init;
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static inline unsigned long ziggurat_SHR3(HepRandomEngine* anEngine) {return (unsigned int)(*anEngine);};
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static inline float ziggurat_UNI(HepRandomEngine* anEngine) {return anEngine->flat();};
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static inline float ziggurat_REXP(HepRandomEngine* anEngine) {
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unsigned long jz=ziggurat_SHR3(anEngine);
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unsigned long iz=jz&255;
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return (jz<ke[iz]) ? jz*we[iz] : ziggurat_efix(jz,anEngine);
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};
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static float ziggurat_efix(unsigned long jz,HepRandomEngine* anEngine);
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private:
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// Private copy constructor. Defining it here disallows use.
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RandExpZiggurat(const RandExpZiggurat& d);
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HepRandomEngine* localEngine;
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bool deleteEngine;
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double defaultMean;
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};
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} // namespace CLHEP
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namespace CLHEP {
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inline RandExpZiggurat::RandExpZiggurat(HepRandomEngine & anEngine, double mean ) : localEngine(&anEngine), deleteEngine(false), defaultMean(mean)
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{
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if(!ziggurat_is_init) ziggurat_init();
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}
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inline RandExpZiggurat::RandExpZiggurat(HepRandomEngine * anEngine, double mean ) : localEngine(anEngine), deleteEngine(true), defaultMean(mean)
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{
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if(!ziggurat_is_init) ziggurat_init();
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}
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} // namespace CLHEP
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#endif
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@@ -0,0 +1,147 @@
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/*
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Code adapted from:
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http://www.jstatsoft.org/v05/i08/
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Original disclaimer:
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The ziggurat method for RNOR and REXP
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Combine the code below with the main program in which you want
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normal or exponential variates. Then use of RNOR in any expression
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will provide a standard normal variate with mean zero, variance 1,
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while use of REXP in any expression will provide an exponential variate
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with density exp(-x),x>0.
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Before using RNOR or REXP in your main, insert a command such as
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zigset(86947731 );
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with your own choice of seed value>0, rather than 86947731.
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(If you do not invoke zigset(...) you will get all zeros for RNOR and REXP.)
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For details of the method, see Marsaglia and Tsang, "The ziggurat method
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for generating random variables", Journ. Statistical Software.
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*/
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#ifndef RandGaussZiggurat_h
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#define RandGaussZiggurat_h 1
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#include "cmath"
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#include "CLHEP/Random/RandGauss.h"
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namespace CLHEP {
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/**
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* @author ATLAS
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* @ingroup random
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*/
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class RandGaussZiggurat : public RandGauss {
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public:
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inline RandGaussZiggurat ( HepRandomEngine& anEngine, double mean=0.0, double stdDev=1.0 );
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inline RandGaussZiggurat ( HepRandomEngine* anEngine, double mean=0.0, double stdDev=1.0 );
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// Destructor
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virtual ~RandGaussZiggurat();
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// Static methods to shoot random values using the static generator
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static inline float shoot() {return ziggurat_RNOR(HepRandom::getTheEngine());};
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static inline float shoot( float mean, float stdDev ) {return shoot()*stdDev + mean;};
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static void shootArray ( const int size, float* vect, float mean=0.0, float stdDev=1.0 );
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static void shootArray ( const int size, double* vect, double mean=0.0, double stdDev=1.0 );
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// Static methods to shoot random values using a given engine
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// by-passing the static generator.
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static inline float shoot( HepRandomEngine* anotherEngine ) {return ziggurat_RNOR(anotherEngine);};
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static inline float shoot( HepRandomEngine* anotherEngine, float mean, float stdDev ) {return shoot(anotherEngine)*stdDev + mean;};
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static void shootArray ( HepRandomEngine* anotherEngine, const int size, float* vect, float mean=0.0, float stdDev=1.0 );
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static void shootArray ( HepRandomEngine* anotherEngine, const int size, double* vect, double mean=0.0, double stdDev=1.0 );
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// Instance methods using the localEngine to instead of the static
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// generator, and the default mean and stdDev established at construction
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inline float fire() {return ziggurat_RNOR(localEngine.get()) * defaultStdDev + defaultMean;};
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inline float fire ( float mean, float stdDev ) {return ziggurat_RNOR(localEngine.get()) * stdDev + mean;};
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void fireArray ( const int size, float* vect);
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void fireArray ( const int size, double* vect);
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void fireArray ( const int size, float* vect, float mean, float stdDev );
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void fireArray ( const int size, double* vect, double mean, double stdDev );
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virtual double operator()();
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virtual double operator()( double mean, double stdDev );
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// Save and restore to/from streams
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std::ostream & put ( std::ostream & os ) const;
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std::istream & get ( std::istream & is );
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std::string name() const;
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HepRandomEngine & engine();
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static std::string distributionName() {return "RandGaussZiggurat";}
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// Provides the name of this distribution class
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static bool ziggurat_init();
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protected:
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//////////////////////////
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// Ziggurat Original code:
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//////////////////////////
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//static unsigned long jz,jsr=123456789;
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//
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//#define SHR3 (jz=jsr, jsr^=(jsr<<13), jsr^=(jsr>>17), jsr^=(jsr<<5),jz+jsr)
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//#define UNI (.5 + (signed) SHR3*.2328306e-9)
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//#define IUNI SHR3
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//
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//static long hz;
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//static unsigned long iz, kn[128], ke[256];
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//static float wn[128],fn[128], we[256],fe[256];
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//
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//#define RNOR (hz=SHR3, iz=hz&127, (fabs(hz)<kn[iz])? hz*wn[iz] : nfix())
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//#define REXP (jz=SHR3, iz=jz&255, ( jz <ke[iz])? jz*we[iz] : efix())
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static unsigned long kn[128], ke[256];
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static float wn[128],fn[128], we[256],fe[256];
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static bool ziggurat_is_init;
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static inline unsigned long ziggurat_SHR3(HepRandomEngine* anEngine) {return (unsigned int)(*anEngine);};
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static inline float ziggurat_UNI(HepRandomEngine* anEngine) {return anEngine->flat();};
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static inline float ziggurat_RNOR(HepRandomEngine* anEngine) {
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long hz=(signed)ziggurat_SHR3(anEngine);
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unsigned long iz=hz&127;
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return ((unsigned long)abs(hz)<kn[iz]) ? hz*wn[iz] : ziggurat_nfix(hz,anEngine);
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};
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static float ziggurat_nfix(long hz,HepRandomEngine* anEngine);
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private:
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// Private copy constructor. Defining it here disallows use.
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RandGaussZiggurat(const RandGaussZiggurat& d);
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// All the engine info, and the default mean and sigma, are in the RandGauss
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// base class.
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};
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} // namespace CLHEP
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namespace CLHEP {
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RandGaussZiggurat::RandGaussZiggurat(HepRandomEngine & anEngine, double mean,double stdDev ): RandGauss(anEngine, mean, stdDev)
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{
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if(!ziggurat_is_init) ziggurat_init();
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}
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RandGaussZiggurat::RandGaussZiggurat(HepRandomEngine * anEngine, double mean,double stdDev ): RandGauss(anEngine, mean, stdDev)
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{
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if(!ziggurat_is_init) ziggurat_init();
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}
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} // namespace CLHEP
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#endif
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@@ -39,11 +39,13 @@
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#include "CLHEP/Random/RandBreitWigner.h"
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#include "CLHEP/Random/RandChiSquare.h"
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#include "CLHEP/Random/RandExponential.h"
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#include "CLHEP/Random/RandExpZiggurat.h"
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#include "CLHEP/Random/RandFlat.h"
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#include "CLHEP/Random/RandBit.h"
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#include "CLHEP/Random/RandGamma.h"
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#include "CLHEP/Random/RandGauss.h"
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#include "CLHEP/Random/RandGaussQ.h"
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#include "CLHEP/Random/RandGaussZiggurat.h"
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#include "CLHEP/Random/RandGeneral.h"
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#include "CLHEP/Random/RandLandau.h"
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#include "CLHEP/Random/RandPoissonQ.h"
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@@ -252,6 +252,18 @@ namespace CLHEP {
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//
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static const double becquerel = 1./second ;
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static const double curie = 3.7e+10 * becquerel;
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static const double kilobecquerel = 1.e+3*becquerel;
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static const double megabecquerel = 1.e+6*becquerel;
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static const double gigabecquerel = 1.e+9*becquerel;
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static const double millicurie = 1.e-3*curie;
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static const double microcurie = 1.e-6*curie;
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static const double Bq = becquerel;
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static const double kBq = kilobecquerel;
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static const double MBq = megabecquerel;
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static const double GBq = gigabecquerel;
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static const double Ci = curie;
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static const double mCi = millicurie;
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static const double uCi = microcurie;
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//
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// Absorbed dose [L^2][T^-2]
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@@ -1486,6 +1486,15 @@ do_nothing_deleter::operator () ( void const * ) const
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} // namespace CLHEP
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#if defined __GNUC__
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#if __GNUC__ > 3 && __GNUC_MINOR__ > 6
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#pragma GCC diagnostic pop
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#endif
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#endif
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#ifdef __clang__
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#pragma clang diagnostic pop
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#endif
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#endif // CLHEP_MEMORY_H
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