Ase::Pcg32Rng class

Pcg32Rng is a permutating linear congruential PRNG. At the core, this pseudo random number generator uses the well known linear congruential generator: 6364136223846793005 * accumulator + 1442695040888963407 mod 2^64. See also TAOCP by D. E. Knuth, section 3.3.4, table 1, line 26. For good statistical performance, the output function of the permuted congruential generator family is used as described on http://www.pcg-random.org/. Period length for this generator is 2^64, the specified seed offset chooses the position of the genrator and the seed sequence parameter can be used to choose from 2^63 distinct random sequences.

Constructors, destructors, conversion operators

template <class SeedSeq>

Pcg32Rng(SeedSeq& seed_sequence) explicit

Initialize and seed from seed_sequence.

Pcg32Rng(uint64_t offset, uint64_t sequence) explicit

Initialize and seed by seeking to position offset within stream sequence.

Pcg32Rng() explicit

Initialize and seed the generator from a system specific nondeterministic random source.

Public functions

void auto_seed()

Seed the generator from a system specific nondeterministic random source.

auto random() →  uint32_t

Generate uniformly distributed 32 bit pseudo random number.

void seed(uint64_t offset, uint64_t sequence)

Seed by seeking to position offset within stream sequence.

template <class SeedSeq>

void seed(SeedSeq& seed_sequence)

Seed the generator state from a seed_sequence.