mirror of https://go.googlesource.com/go
32 lines
1011 B
Go
32 lines
1011 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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package bytealg
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import "internal/cpu"
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const MaxBruteForce = 64
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func init() {
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// Note: we're kind of lucky that this flag is available at this point.
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// The runtime sets HasVX when processing auxv records, and that happens
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// to happen *before* running the init functions of packages that
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// the runtime depends on.
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// TODO: it would really be nicer for internal/cpu to figure out this
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// flag by itself. Then we wouldn't need to depend on quirks of
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// early startup initialization order.
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if cpu.S390X.HasVX {
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MaxLen = 64
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}
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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 8 characters, plus a few slop to start.
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return (n + 16) / 8
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}
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