tango.math.random.ExpSource

License:

Version:

Author:

class ExpSource(RandG, T) [final] ¶

class that returns exponential distributed numbers (f=exp(-x) for x>0, 0 otherwise)

real probDensityF(real x) [static] ¶

probability distribution

real invProbDensityF(real x) [static] ¶

inverse probability distribution

real cumProbDensityFCompl(real x) [static] ¶

complement of the cumulative density distribution (integral x..infinity probDensityF)

T tailGenerator(RandG r, T dMin) [static] ¶

tail for exponential distribution

SourceT source ¶

internal source of exp distribued numbers

this(RandG r) ¶

initializes the probability distribution

ExpSource opCall(U, S...)(ref U a, S args) ¶

chainable call style initialization of variables (thorugh a call to randomize)

T getRandom() ¶

returns a exp distribued number

T getRandom(T beta) ¶

returns a exp distribued number with the given beta (survival rate, average) f=1/beta*exp(-x/beta)

U randomize(U)(ref U x) ¶

initializes the given variable with an exponentially distribued number

U randomize(U, V)(ref U x, V beta) ¶

initializes the given variable with an exponentially distribued number with scale parameter beta

U randomizeOp(U, S)(scope S delegate(T) op, ref U a) ¶

initializes the given variable with an exponentially distribued number and maps op on it

struct ExpDistribution ¶

exp distribution with different default scale parameter beta f=1/beta*exp(-x/beta) for x>0, 0 otherwise

ExpDistribution create()(ExpSource source, T beta) [static] ¶

constructor

ExpDistribution opCall(U, S...)(ref U a, S args) ¶

chainable call style initialization of variables (thorugh a call to randomize)

T getRandom() ¶

returns a single number

U randomize(U)(ref U a) ¶

initialize a

U randomize(U, V)(ref U a, V b) ¶

initialize a

ExpDistribution expD(T beta) ¶

returns an exp distribution with a different beta