mirror of
https://github.com/fumiama/go-base16384.git
synced 2026-06-05 00:32:52 +08:00
46 lines
887 B
Go
46 lines
887 B
Go
//go:build arm64
|
|
// +build arm64
|
|
|
|
package base14
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"unsafe"
|
|
)
|
|
|
|
//go:noescape
|
|
//go:nosplit
|
|
func _encode(offset, outlen int, b, encd []byte) (sum uint64, valn uintptr)
|
|
|
|
//go:noescape
|
|
//go:nosplit
|
|
func _decode(offset, outlen int, b, decd []byte)
|
|
|
|
func encode(offset, outlen int, b, encd []byte) {
|
|
if len(b) == 7 {
|
|
b = append(b, 0)
|
|
}
|
|
sum, valn := _encode(offset, outlen, b, encd)
|
|
if offset == 0 {
|
|
return
|
|
}
|
|
n := valn - (uintptr)(*(*unsafe.Pointer)(unsafe.Pointer(&encd)))
|
|
println(sum, n)
|
|
var tmp [4]byte
|
|
binary.LittleEndian.PutUint32(tmp[:], uint32(sum))
|
|
copy(encd[n:], tmp[:])
|
|
encd[outlen-2] = '='
|
|
encd[outlen-1] = byte(offset)
|
|
}
|
|
|
|
func decode(offset, outlen int, b, decd []byte) {
|
|
/*
|
|
if offset != 0 && cap(b) == len(b) {
|
|
b = append(b, make([]byte, 8)...)
|
|
}
|
|
_decode(offset, outlen, b, decd)
|
|
*/
|
|
|
|
decodeGeneric(offset, outlen, b, decd)
|
|
}
|