107 lines
2.6 KiB
Go
107 lines
2.6 KiB
Go
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package main
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// import (
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// "encoding/binary"
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// "fmt"
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// "unsafe"
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// )
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// func main() {
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// const x int32 = 2017403647
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// const y int32 = 1010101010
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// const z int32 = 2020202020
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// // bytearr := valuesToByteArrayTest(x, y, z, 1)
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// // fmt.Println("TEST: ", bytearr)
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// // slice := binary.LittleEndian.Uint32(bytearr[0:4])
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// // fmt.Println("SLICE:", slice)
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// // slice2 := binary.LittleEndian.Uint32(bytearr[4:8])
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// // fmt.Println("SLICE2:", slice2)
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// bs := make([]byte, 4)
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// binary.LittleEndian.PutUint32(bs, uint32(y))
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// fmt.Println(bs)
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// // buf := make([]byte, 4)
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// // arr[0] = byte(x >> 8)
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// // buf[0], buf[1], buf[2] = uint8(7676767>>16), uint8(id>>8), uint8(id)
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// bytearr := valuesToByteArray3(x, y, z, 1)
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// fmt.Println("TEST: ", bytearr)
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// slice := binary.LittleEndian.Uint32(bytearr[0:4])
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// fmt.Println("SLICE:", slice)
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// slice2 := binary.LittleEndian.Uint32(bytearr[4:8])
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// fmt.Println("SLICE2:", slice2)
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// }
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// func valuesToByteArrayOld(x int32, y int32, z int32, p int8) []byte {
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// arr := make([]byte, 13)
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// for i := 0; i < 12; i++ {
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// var test unsafe.Pointer
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// var test2 unsafe.Pointer
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// var test3 unsafe.Pointer
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// if i < 4 {
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// test = unsafe.Pointer(&x)
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// } else if i < 8 {
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// test2 = unsafe.Pointer(&y)
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// } else if i < 12 {
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// test3 = unsafe.Pointer(&z)
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// }
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// byt := *(*uint8)(unsafe.Pointer(uintptr(test) + uintptr(i)))
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// arr[i] = byt
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// }
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// arr[12] = byte(p)
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// return arr
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// }
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// func valuesToByteArray1(x int32, y int32, z int32, p int8) []byte {
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// arr := make([]byte, 13)
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// arr[0] = byte(x)
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// arr[1] = byte(x >> 8)
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// arr[2] = byte(x >> 16)
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// arr[3] = byte(x >> 24)
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// arr[4] = byte(y)
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// arr[5] = byte(y >> 8)
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// arr[6] = byte(y >> 16)
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// arr[7] = byte(y >> 24)
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// arr[8] = byte(z)
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// arr[9] = byte(z >> 8)
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// arr[10] = byte(z >> 16)
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// arr[11] = byte(z >> 24)
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// arr[12] = byte(p)
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// return arr
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// }
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// func valuesToByteArray2(x int32, y int32, z int32, p int8) []byte {
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// buf := make([]byte, 13)
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// binary.LittleEndian.PutUint32(buf[0:], uint32(x))
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// binary.LittleEndian.PutUint32(buf[4:], uint32(y))
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// binary.LittleEndian.PutUint32(buf[8:], uint32(z))
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// buf[12] = byte(p)
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// return buf
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// }
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// func valuesToByteArray3(x int32, y int32, z int32, p int8) []byte {
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// arr := make([]byte, 13)
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// for i := 0; i < 12; i++ {
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// var test unsafe.Pointer
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// if i < 4 {
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// test = unsafe.Pointer(&x)
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// } else if i < 8 {
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// test = unsafe.Pointer(&y)
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// } else if i < 12 {
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// test = unsafe.Pointer(&z)
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// }
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// byt := *(*uint8)(unsafe.Pointer(uintptr(test) + uintptr(i)))
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// arr[i] = byt
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// }
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// arr[12] = byte(p)
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// return arr
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// }
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