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26 lines
723 B
26 lines
723 B
// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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package ghash
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// JS implements the classic JS hash algorithm for 32 bits.
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func JS(str []byte) uint32 {
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var hash uint32 = 1315423911
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for i := 0; i < len(str); i++ {
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hash ^= (hash << 5) + uint32(str[i]) + (hash >> 2)
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}
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return hash
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}
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// JS64 implements the classic JS hash algorithm for 64 bits.
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func JS64(str []byte) uint64 {
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var hash uint64 = 1315423911
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for i := 0; i < len(str); i++ {
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hash ^= (hash << 5) + uint64(str[i]) + (hash >> 2)
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}
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return hash
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}
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