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master
encoding/ghash/ghash_sdbm.go
27 строк
834 B
houseme
add golangci feature to guarantee codes quality (#2229)
01 ноя 2022, 15:12
Не верифицирован
01 ноя 2022, 15:12
1793bf0
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// Copyright GoFrame Author(https://goframe.org). All Rights Reserved. // // This Source Code Form is subject to the terms of the MIT License. // If a copy of the MIT was not distributed with this file, // You can obtain one at https://github.com/gogf/gf. package ghash // SDBM implements the classic SDBM hash algorithm for 32 bits. func SDBM(str []byte) uint32 { var hash uint32 for i := 0; i < len(str); i++ { // equivalent to: hash = 65599*hash + uint32(str[i]); hash = uint32(str[i]) + (hash << 6) + (hash << 16) - hash } return hash } // SDBM64 implements the classic SDBM hash algorithm for 64 bits. func SDBM64(str []byte) uint64 { var hash uint64 for i := 0; i < len(str); i++ { // equivalent to: hash = 65599*hash + uint32(str[i]) hash = uint64(str[i]) + (hash << 6) + (hash << 16) - hash } return hash }