#include <stdint.h>

Functions
static uint64_t	rotl (const uint64_t x, const int k)
	rotating left shift helper According to the original authors, this will on most platforms reduce to a single instruction More...

static uint64_t	xoroshiro128p_next (uint64_t *state)
	generate the next random number and update the state. This is the workhorse, here! More...

static void	xoroshiro128p_jump (uint64_t *state)
	Advance the internal state by 2^64 steps; useful when coordinating multiple independent RNGs This is the jump function for the generator. It is equivalent to 2^64 calls to next(); it can be used to generate 2^64 non-overlapping subsequences for parallel computations. More...

static uint64_t	splitmix64_next (uint64_t *state)
	step of the SPLITMIX64 RNG; only used internally for seeding This RNG isn't as good as XOROSHIRO128+, so it's only used to initialize a 128 bit state from a seed. More...

static void	xoroshiro128p_seed (uint64_t *state, const uint64_t seed)
	Seed the 128 bit state from a 64 bit seed. More...

Function Documentation

◆ rotl()

static uint64_t rotl	(	const uint64_t	x,
		const int	k
	)

inlinestatic

rotating left shift helper According to the original authors, this will on most platforms reduce to a single instruction

Referenced by xoroshiro128p_next().

◆ splitmix64_next()

static uint64_t splitmix64_next ( uint64_t * state )

inlinestatic

step of the SPLITMIX64 RNG; only used internally for seeding This RNG isn't as good as XOROSHIRO128+, so it's only used to initialize a 128 bit state from a seed.

Referenced by xoroshiro128p_seed().

◆ xoroshiro128p_jump()

static void xoroshiro128p_jump ( uint64_t * state )

inlinestatic

Advance the internal state by 2^64 steps; useful when coordinating multiple independent RNGs This is the jump function for the generator. It is equivalent to 2^64 calls to next(); it can be used to generate 2^64 non-overlapping subsequences for parallel computations.

References xoroshiro128p_next().

Referenced by xoroshiro128p_seed().