Module rng 

Thread-local random number generation for simulation.

This module provides deterministic randomness through thread-local storage, enabling clean API design without passing RNG through the simulation state. Each thread maintains its own RNG state, ensuring deterministic behavior within each simulation run while supporting parallel test execution.

Functions

get_current_sim_seed

Get the current simulation seed.

reset_sim_rng

Reset the thread-local simulation RNG to a fresh state.

set_sim_seed

Set the seed for the thread-local simulation RNG.

sim_random

Generate a random value using the thread-local simulation RNG.

sim_random_f64

Generate a random f64 in the range [0.0, 1.0) using the simulation RNG.

sim_random_range

Generate a random value within a specified range using the thread-local simulation RNG.

sim_random_range_or_default

Generate a random value within the given range, returning the start value if the range is empty.