1 // Copyright 2020 The Pigweed Authors
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
7 // https://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
18 #include "pw_kvs/key.h"
24 // The hash function used to hash keys.
25 constexpr uint32_t Hash(Key string) {
27 uint32_t coefficient = 65599u;
29 for (char ch : string) {
30 hash += coefficient * uint32_t(ch);
31 coefficient *= 65599u;
37 } // namespace internal