endian.go

// Copyright (c) 2023 The Songlin Yang Authors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package ena

import (
	"encoding/binary"
	"unsafe"
)

const intWidth int = int(unsafe.Sizeof(0))

var byteOrder binary.ByteOrder

// ByteOrder returns the byte order for the CPU's native endianness.
func ByteOrder() binary.ByteOrder {
	return byteOrder
}

func init() {
	var i = 0x01
	if v := (*[intWidth]byte)(unsafe.Pointer(&i)); v[0] == 0 {
		byteOrder = binary.BigEndian
	} else {
		byteOrder = binary.LittleEndian
	}
}