mirror of
https://github.com/fatedier/frp.git
synced 2024-12-13 18:21:14 +01:00
50 lines
1.0 KiB
Go
50 lines
1.0 KiB
Go
package xor
|
|
|
|
// SIMD Extensions
|
|
const (
|
|
none = iota
|
|
avx2
|
|
// first introduced by Intel with the initial version of the Pentium 4 in 2001
|
|
// so I think we can assume all amd64 has sse2
|
|
sse2
|
|
)
|
|
|
|
var extension = none
|
|
|
|
// Bytes : chose the shortest one as xor size
|
|
// it's better to use it for big data ( > 64bytes )
|
|
func Bytes(dst, src0, src1 []byte) {
|
|
size := len(dst)
|
|
if size > len(src0) {
|
|
size = len(src0)
|
|
}
|
|
if size > len(src1) {
|
|
size = len(src1)
|
|
}
|
|
xorBytes(dst, src0, src1, size)
|
|
}
|
|
|
|
// BytesSameLen : all slice's length must be equal
|
|
// cut size branch, save time for small data
|
|
func BytesSameLen(dst, src0, src1 []byte) {
|
|
xorSrc1(dst, src0, src1)
|
|
}
|
|
|
|
// BytesSrc0 : src1 >= src0, dst >= src0
|
|
// xor src0's len bytes
|
|
func BytesSrc0(dst, src0, src1 []byte) {
|
|
xorSrc0(dst, src0, src1)
|
|
}
|
|
|
|
// BytesSrc1 : src0 >= src1, dst >= src1
|
|
// xor src1's len bytes
|
|
func BytesSrc1(dst, src0, src1 []byte) {
|
|
xorSrc1(dst, src0, src1)
|
|
}
|
|
|
|
// Matrix : all slice's length must be equal && != 0
|
|
// len(src) must >= 2
|
|
func Matrix(dst []byte, src [][]byte) {
|
|
xorMatrix(dst, src)
|
|
}
|