23   enum : uint32_t {
30   uint32_t seed_;
32   static uint32_t GoodSeed(uint32_t s) { return (s & M) != 0 ? (s & M) : 1; }  in GoodSeed()
36   enum : uint32_t { kMaxNext = M };
38   explicit Random(uint32_t s) : seed_(GoodSeed(s)) {}  in Random()
40   void Reset(uint32_t s) { seed_ = GoodSeed(s); }  in Reset()
42   uint32_t Next() {  in Next()
52     seed_ = static_cast<uint32_t>((product >> 31) + (product & M));  in Next()
64   uint32_t Uniform(int n) { return Next() % n; }  in Uniform()
84   uint32_t Skewed(int max_log) {  in Skewed()
101   explicit Random32(uint32_t s) : generator_(s) {}  in Random32()
104   uint32_t Next() { return static_cast<uint32_t>(generator_()); }  in Next()
108   uint32_t Uniform(uint32_t n) {  in Uniform()
109     return static_cast<uint32_t>(  in Uniform()
117   uint32_t Uniformish(uint32_t n) {  in Uniformish()
119     return static_cast<uint32_t>((uint64_t(generator_()) * uint64_t(n)) >> 32);  in Uniformish()
124   bool OneIn(uint32_t n) { return Uniform(n) == 0; }  in OneIn()
129   uint32_t Skewed(int max_log) {  in Skewed()
130     return Uniform(uint32_t{1} << Uniform(max_log + 1));  in Skewed()
134   void Seed(uint32_t new_seed) { generator_.seed(new_seed); }  in Seed()