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File rng-utils.hpp

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  • #include <cstdint>
  • #include <limits>
  • #include <random>
  • #include "config.hpp"

Classes

Type Name
class epi_xoshiro256ss
Fast 64-bit PRNG based on the xoshiro256** algorithm.

Public Functions

Type Name
epiworld_double runif_epi (epi_xoshiro256ss & engine)
Draw a uniform [0, 1) random number from an epi_xoshiro256ss engine.
epiworld_double runif_mt19937 (std::mt19937 & engine)
Draw a uniform [0, 1) random number from a std::mt19937 engine.

Public Functions Documentation

function runif_epi

Draw a uniform [0, 1) random number from an epi_xoshiro256ss engine. 

inline epiworld_double runif_epi (
    epi_xoshiro256ss & engine
)

Uses the top N bits of the 64-bit output (where N = std::numeric_limits<epiworld_double>::digits) to produce a value in [0, 1) without any long-double arithmetic.

Parameters:

Returns:

epiworld_double in [0, 1).

function runif_mt19937

Draw a uniform [0, 1) random number from a std::mt19937 engine. 

inline epiworld_double runif_mt19937 (
    std::mt19937 & engine
)

Kept for backward compatibility with code that still holds a raw mt19937.

The documentation for this class was generated from the following file epiworld-src/include/epiworld/rng-utils.hpp