k3s/vendor/github.com/flannel-io/flannel/pkg/ip/endianess.go
Brad Davidson e8381db778 Update Kubernetes to v1.21.0
* Update Kubernetes to v1.21.0
* Update to golang v1.16.2
* Update dependent modules to track with upstream
* Switch to upstream flannel
* Track changes to upstream cloud-controller-manager and FeatureGates

Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
2021-04-14 14:51:42 -07:00

43 lines
1.1 KiB
Go

// Copyright 2015 flannel authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ip
// Taken from a patch by David Anderson who submitted it
// but got rejected by the golang team
import (
"encoding/binary"
"unsafe"
)
// NativeEndian is the ByteOrder of the current system.
var NativeEndian binary.ByteOrder
func init() {
// Examine the memory layout of an int16 to determine system
// endianness.
var one int16 = 1
b := (*byte)(unsafe.Pointer(&one))
if *b == 0 {
NativeEndian = binary.BigEndian
} else {
NativeEndian = binary.LittleEndian
}
}
func NativelyLittle() bool {
return NativeEndian == binary.LittleEndian
}