Math

Files
file	psRandom.h
	Random Number Generators.
file	psRandom.h
	Random Number Generators.
Data Structures
struct	psRandom
	Data structure for psRandom. More...
Enumerations
enum	psRandomType { PS_RANDOM_TAUS }
	Enumeration containing a flag for psRandom types. More...
Functions
psU64	p_psRandomGetSystemSeed ()
psRandom *	psRandomAlloc (psRandomType type, unsigned long seed)
	Allocates a psRandom struct.
void	psRandomReset (psRandom *rand, unsigned long seed)
	Resets an existing psRandom struct.
double	psRandomUniform (const psRandom *r)
	Random number generator based on a uniform distribution on [0,1).
double	psRandomGaussian (const psRandom *r)
	Random number generator based on a Gaussian deviate, N(0,1).
double	p_psRandomGaussian (const psRandom *r, double sigma)
	Random number generator based on a Gaussian deviate, N(0,1).
double	psRandomPoisson (const psRandom *r, double mean)
	Random number generator based on a Poisson distribution with the given mean.

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Enumeration Type Documentation

enum psRandomType

Enumeration containing a flag for psRandom types. Enumeration values: PS_RANDOM_TAUS  A maximally equidistributed combined Tausworthe generator. Definition at line 36 of file psRandom.h.

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Function Documentation

double p_psRandomGaussian (  const psRandom *  r, double  sigma )

Random number generator based on a Gaussian deviate, N(0,1). Uses gsl_ran_gaussian. XXX: I created this since the above psLib spec for p_psRandomGaussian had no argument for sigma. Verify that with IfA. Returns: double: Random number. Parameters: r  psRandom struct for RNG

psU64 p_psRandomGetSystemSeed (   )

psRandom* psRandomAlloc (  psRandomType  type, unsigned long  seed )

Allocates a psRandom struct. Returns: psRandom*: A new psRandom structure. Parameters: type  The type of RNG seed  Known value with which to seed the RNG

double psRandomGaussian (  const psRandom *  r  )

Random number generator based on a Gaussian deviate, N(0,1). Uses gsl_ran_gaussian. Returns: double: Random number. Parameters: r  psRandom struct for RNG

double psRandomPoisson (  const psRandom *  r, double  mean )

Random number generator based on a Poisson distribution with the given mean. Uses gsl_ran_poisson. Returns: double: Random number. Parameters: r  psRandom struct for RNG mean  Mean value

void psRandomReset (  psRandom *  rand, unsigned long  seed )

Resets an existing psRandom struct. Returns: void Parameters: rand  Existing psRandom struct to reset seed  Known value with which to seed the RNG

double psRandomUniform (  const psRandom *  r  )

Random number generator based on a uniform distribution on [0,1). Uses gsl_rng_uniform. Returns: double: Random number. Parameters: r  psRandom struct for RNG

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