sparrow/vendor/github.com/gogf/gf/v2/encoding/ghash/ghash_jshash.go

// 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

// JS implements the classic JS hash algorithm for 32 bits.
func JS(str []byte) uint32 {
	var hash uint32 = 1315423911
	for i := 0; i < len(str); i++ {
		hash ^= (hash << 5) + uint32(str[i]) + (hash >> 2)
	}
	return hash
}

// JS64 implements the classic JS hash algorithm for 64 bits.
func JS64(str []byte) uint64 {
	var hash uint64 = 1315423911
	for i := 0; i < len(str); i++ {
		hash ^= (hash << 5) + uint64(str[i]) + (hash >> 2)
	}
	return hash
}