Function pcg_setseq_128_step_r

numpy/random/src/pcg64/pcg64.h:165–168

}

static inline void pcg_setseq_128_step_r(pcg_state_setseq_128 *rng) {
  rng->state = pcg128_add(pcg128_mult(rng->state, PCG_DEFAULT_MULTIPLIER_128),
                           rng->inc);
}

static inline uint64_t pcg_output_xsl_rr_128_64(pcg128_t state) {
  return pcg_rotr_64(state.high ^ state.low, state.high >> 58u);