Wrote for a joyful journey of Go.
package main
import (
"fmt"
)
func i64tob(val uint64) []byte {
r := make([]byte, 8)
for i := uint64(0); i < 8; i++ {
r[i] = byte((val >> (i * 8)) & 0xff)
}
return r
}
func btoi64(val []byte) uint64 {
r := uint64(0)
for i := uint64(0); i < 8; i++ {
r |= uint64(val[i]) << (8 * i)
}
return r
}
func i32tob(val uint32) []byte {
r := make([]byte, 4)
for i := uint32(0); i < 4; i++ {
r[i] = byte((val >> (8 * i)) & 0xff)
}
return r
}
func btoi32(val []byte) uint32 {
r := uint32(0)
for i := uint32(0); i < 4; i++ {
r |= uint32(val[i]) << (8 * i)
}
return r
}
func main() {
var a uint64 = 0x0102030405060708
var b uint32 = 0x01020304
fmt.Println("Uint64:", a, "Bytes array:", i64tob(a))
fmt.Println("Uint64:", btoi64(i64tob(a)), "Bytes array:", i64tob(btoi64(i64tob(a))))
fmt.Println("Uint32:", b, "Bytes array:", i32tob(b))
fmt.Println("Uint32:", btoi32(i32tob(b)), "Bytes array:", i32tob(btoi32(i32tob(b))))
}Licensed under MIT License
fail on bigendian