Random.Xorshift.Int32

This module contains a 32 bit Xorshift random generator. Use this if you need a 32 bit random generator, usually Xorshift itself is a good choice for your platform. This generator has a period of 2^32-1 bits if initialized with a value different from 0.

Documentation

newtype Xorshift32

Xorshift generator with 32 bits. This Xorshift generator uses first a left shift, then a right shift and again a left shift. It uses the parameters 13, 17 and 5. See the paper for more details on how the parameters affect the generation of random numbers.

The generator has a periode of 2^32-1, please notice that the generator has to be initialized with a value different from 0, elseway all future values will be zero as well.

Please notice, that the function split is not implemented and will result in a runtime error.

Constructors

Xorshift32 Int32

Instances

Bounded Xorshift32

Enum Xorshift32

Eq Xorshift32

Show Xorshift32

RandomGen Xorshift32

newXorshift32 :: IO Xorshift32

Generates a new Xorshift32 from the current time.

makeXorshift32 :: Integral a => a -> Xorshift32

Generate a new Xorshift32 generator. This is essentially a wrapper around the constructor.

getInt32 :: Xorshift32 -> Int32

Get the raw contents of the random generator. This function is preferable over direct usage of the constructor itself, as the internal representation of the random generator may change in future releases.