Version: 5.2
Complementary Multiply-With-Carry Psuedo-Random Number Generator
| (require (planet djhaskin987/cmwc:1:0)) |
Provides functions which construct generators for random numbers using the complementary multiply-with-carry method.
(make-cmwc-gen seed a b c) → (and/c generator? (-> integer?)) seed : (listof integer?) a : integer? b : integer? c : integer?
Given a seed list, a multiplier a, a modulus b, and an initial carry value c, makes and returns a random number generator.
Makes the default generator whose seed is generated by init-cmwc-seed, and whose a, b and initial c is carefully chosen to give a lag of 4096, a period of 2^131104 and which yields numbers in the range of 0-4,294,967,295.
(make-cmwc-gen-raw raw-seed a b c) → (and/c generator? (-> integer?)) raw-seed : queue? a : integer? b : integer? c : integer?
Makes a generator using a raw seed, or a seed in queue form rather than list form.
Yields a raw cmwc seed based on an initial integer init-seed whose length (number of integers in the seed) is lag.