Simulation.Aivika.Trans.Generator

Tested with: GHC 7.8.3

Below is defined a random number generator.

Documentation

class (Functor m, Monad m) => GeneratorMonad m where

Defines a monad whithin which computation the random number generator can work.

Associated Types

data Generator m :: *

Defines a random number generator.

Methods

generateUniform :: Generator m -> Double -> Double -> m Double

Generate an uniform random number with the specified minimum and maximum.

generateUniformInt :: Generator m -> Int -> Int -> m Int

Generate an uniform integer random number with the specified minimum and maximum.

generateNormal :: Generator m -> Double -> Double -> m Double

Generate a normal random number with the specified mean and deviation.

generateExponential :: Generator m -> Double -> m Double

Generate a random number distributed exponentially with the specified mean (the reciprocal of the rate).

generateErlang :: Generator m -> Double -> Int -> m Double

Generate the Erlang random number with the specified scale (the reciprocal of the rate) and integer shape.

generatePoisson :: Generator m -> Double -> m Int

Generate the Poisson random number with the specified mean.

generateBinomial :: Generator m -> Double -> Int -> m Int

Generate the binomial random number with the specified probability and number of trials.

newGenerator :: Session m -> GeneratorType m -> m (Generator m)

Create a new random number generator by the specified type with current session.

newRandomGenerator :: RandomGen g => Session m -> g -> m (Generator m)

Create a new random generator by the specified standard generator within current session.

newRandomGenerator01 :: Session m -> m Double -> m (Generator m)

Create a new random generator by the specified uniform generator of numbers from 0 to 1 within current session.

Instances

GeneratorMonad IO

data GeneratorType m

Defines a type of the random number generator.

Constructors

SimpleGenerator

The simple random number generator.

SimpleGeneratorWithSeed Int

The simple random number generator with the specified seed.

CustomGenerator (m (Generator m))

The custom random number generator.

CustomGenerator01 (m Double)

The custom random number generator by the specified uniform generator of numbers from 0 to 1.