frp/vendor/golang.org/x/net/icmp/helper.go

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2017-11-01 16:21:57 +08:00
// Copyright 2016 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 icmp
import (
"encoding/binary"
"unsafe"
)
var (
// See http://www.freebsd.org/doc/en/books/porters-handbook/freebsd-versions.html.
freebsdVersion uint32
nativeEndian binary.ByteOrder
)
func init() {
i := uint32(1)
b := (*[4]byte)(unsafe.Pointer(&i))
if b[0] == 1 {
nativeEndian = binary.LittleEndian
} else {
nativeEndian = binary.BigEndian
}
}