26 lines
734 B
Go
26 lines
734 B
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build ignore_for_gccgo
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package bytealg
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// Empirical data shows that using Index can get better
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// performance when len(s) <= 16.
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const MaxBruteForce = 16
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func init() {
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// Optimize cases where the length of the substring is less than 32 bytes
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MaxLen = 32
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}
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// Cutover reports the number of failures of IndexByte we should tolerate
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// before switching over to Index.
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// n is the number of bytes processed so far.
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// See the bytes.Index implementation for details.
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func Cutover(n int) int {
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// 1 error per 16 characters, plus a few slop to start.
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return 4 + n>>4
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}
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