DerivedSeed¶

struct DerivedSeed¶

A MixMaxRandom seed derived from a run seed plus the identity of the call site (seed type, job, channel, and stream index), so that every RNG stream in a run is independently and reproducibly seeded from a single top-level seed.

Public Types

enum SeedType¶

Values:

enumerator none¶

enumerator first_survey_generate¶

enumerator first_survey_unweight¶

enumerator second_survey_generate¶

enumerator second_survey_unweight¶

enumerator generator_generate¶

enumerator generator_unweight¶

enumerator combine_select¶

enumerator lhe_complete¶

enumerator unweight_pass¶

enumerator madnis_generate¶

enumerator madnis_unweight¶

enumerator madnis_sample_buffer¶

enumerator global_init¶

Public Functions

DerivedSeed(const std::optional<std::uint64_t> &seed = std::nullopt, SeedType seed_type = none, std::size_t job_index = 0, std::size_t channel_index = 0, std::size_t stream_index = 0)¶

Public Members

std::array<std::uint32_t, 4> seed_parts¶

Public Static Attributes

static constexpr std::size_t max_channel_count¶

static constexpr std::size_t max_job_count¶

static constexpr std::size_t max_stream_count¶