99     if (rnd->Next() >=  in MaybeFail()
103     if (rnd->Next() % 2) {  in MaybeFail()
116     if (rnd->Next() >=  in MaybeMutate()
130           rnd->Next() < std::numeric_limits<uint64_t>::max() * hide_probability;  in MaybeMutate()
133         size_t idx = rnd->Next() % data->entries.size();  in MaybeMutate()
150         size_t hi = rnd->Next() % data->hidden.size();  in MaybeMutate()
162     } while (rnd->Next() % 3 != 0);  // do 3 mutations on average  in MaybeMutate()
219   void Next() override {  in Next()  function
382   void Next() {  in Next()  function
414     std::string s = ToString(rnd.Next() % static_cast<uint64_t>(max_key));  in TEST_F()
461                 if (rnd.Next() % 10 != 0) {  in TEST_F()
467                       types[rnd.Next() % (sizeof(types) / sizeof(types[0]))];  in TEST_F()
496                 if (db_iter == nullptr || rnd.Next() % 30 == 0) {  in TEST_F()
497                   uint64_t sequence = rnd.Next() % (data.entries.size() + 2);  in TEST_F()
522                 bool forward = rnd.Next() % 2 > 0;  in TEST_F()
524                 bool seek = !ref_iter->Valid() || rnd.Next() % 10 == 0;  in TEST_F()
537                     db_iter->Next();  in TEST_F()
538                     ref_iter->Next();  in TEST_F()
546                   if (rnd.Next() % 4 == 0) {  in TEST_F()