golang index_s390x 代码
文件路径：/src/internal/bytealg/index_s390x.go
/ Copyright 2018 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
package bytealg
import "internal/cpu"
const MaxBruteForce = 64
func init() {
/ Note: we're kind of lucky that this flag is available at this point.
/ The runtime sets HasVX when processing auxv records, and that happens
/ to happen *before* running the init functions of packages that
/ the runtime depends on.
/ TODO: it would really be nicer for internal/cpu to figure out this
/ flag by itself. Then we wouldn't need to depend on quirks of
/ early startup initialization order.
if cpu.S390X.HasVX {
MaxLen = 64
}
}
/ Cutover reports the number of failures of IndexByte we should tolerate
/ before switching over to Index.
/ n is the number of bytes processed so far.
/ See the bytes.Index implementation for details.
func Cutover(n int) int {
/ 1 error per 8 characters, plus a few slop to start.
return (n + 16) / 8
}