Function pcg_rotr_64

numpy/random/src/pcg64/pcg64.h:113–119

static inline uint64_t pcg_rotr_64(uint64_t value, unsigned int rot) {
#ifdef _WIN32
  return _rotr64(value, rot);
#else
  return (value >> rot) | (value << ((-rot) & 63));
#endif
}

#ifdef PCG_EMULATED_128BIT_MATH