| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #ifndef REQ_COMMON_HPP_ |
| #define REQ_COMMON_HPP_ |
| |
| #include <random> |
| #include <chrono> |
| |
| #include "serde.hpp" |
| #include "common_defs.hpp" |
| |
| namespace datasketches { |
| |
| // TODO: have a common random bit with KLL |
| static std::independent_bits_engine<std::mt19937, 1, unsigned> |
| req_random_bit(static_cast<unsigned>(std::chrono::system_clock::now().time_since_epoch().count())); |
| |
| namespace req_constants { |
| static const uint16_t MIN_K = 4; |
| static const uint8_t INIT_NUM_SECTIONS = 3; |
| static const unsigned MULTIPLIER = 2; |
| } |
| |
| } /* namespace datasketches */ |
| |
| #endif |