spire.random.rng

Utils

object Utils

This object provides helper functions used for seeding arrays of integers or longs.

The seeding functions are an adaptation/port of code from the the 32-bit and 64-bit implementations of MersenneTwister (MT19937.c, MT19937-64.c).

MersenneTwister is a fast, 623-dimensionally equidistributed pseudo random number generator with a 219937 - 1 long period.

Reference: Makato Matsumoto and Takuji Nishimura: "Mersenne Twister: A 623-Dimensionally Equidistributed Uniform Pseudo-Random Number Generator", ACM Transactions on Modeling and Computer Simulation, Vol. 8, No. 1, January 1998, pp 3--30.

See also

Mersenne Twister @ Wikipedia

Mersenne Twister Home Page

MT19937-64.c

MT19937.c

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  17. def seedFromArray(length: Int, seed: Array[Long]): Array[Long]

  18. def seedFromArray(length: Int, seed: Array[Int]): Array[Int]

  19. def seedFromInt(length: Int, seed: Int = 5489): Array[Int]

  20. def seedFromLong(length: Int, seed: Long = 5489): Array[Long]

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