1 /*
2 * Copyright 2014 Google Inc. All rights reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef SEMISTATIC_MAP_DEFN_H
18 #define SEMISTATIC_MAP_DEFN_H
19
20 #include <fruit/impl/data_structures/semistatic_map.h>
21
22 namespace fruit {
23 namespace impl {
24
25 template <typename Key, typename Value>
HashFunction()26 inline SemistaticMap<Key, Value>::HashFunction::HashFunction() : a(0), shift(0) {}
27
28 template <typename Key, typename Value>
hash(Unsigned x)29 inline typename SemistaticMap<Key, Value>::Unsigned SemistaticMap<Key, Value>::HashFunction::hash(Unsigned x) const {
30 return (Unsigned)(a * x) >> shift;
31 }
32
33 template <typename Key, typename Value>
hash(const Key & key)34 inline typename SemistaticMap<Key, Value>::Unsigned SemistaticMap<Key, Value>::hash(const Key& key) const {
35 return hash_function.hash(std::hash<typename std::remove_cv<Key>::type>()(key));
36 }
37
38 } // namespace impl
39 } // namespace fruit
40
41 #endif // SEMISTATIC_MAP_DEFN_H
42