vendor.github.com.klauspost.reedsolomon.galois_arm64.go Maven / Gradle / Ivy
//+build !noasm
//+build !appengine
//+build !gccgo
// Copyright 2015, Klaus Post, see LICENSE for details.
// Copyright 2017, Minio, Inc.
package reedsolomon
//go:noescape
func galMulNEON(low, high, in, out []byte)
//go:noescape
func galMulXorNEON(low, high, in, out []byte)
//go:noescape
func galXorNEON(in, out []byte)
func galMulSlice(c byte, in, out []byte, o *options) {
if c == 1 {
copy(out, in)
return
}
var done int
galMulNEON(mulTableLow[c][:], mulTableHigh[c][:], in, out)
done = (len(in) >> 5) << 5
remain := len(in) - done
if remain > 0 {
mt := mulTable[c][:256]
for i := done; i < len(in); i++ {
out[i] = mt[in[i]]
}
}
}
func galMulSliceXor(c byte, in, out []byte, o *options) {
if c == 1 {
sliceXor(in, out, o)
return
}
var done int
galMulXorNEON(mulTableLow[c][:], mulTableHigh[c][:], in, out)
done = (len(in) >> 5) << 5
remain := len(in) - done
if remain > 0 {
mt := mulTable[c][:256]
for i := done; i < len(in); i++ {
out[i] ^= mt[in[i]]
}
}
}
// slice galois add
func sliceXor(in, out []byte, o *options) {
galXorNEON(in, out)
done := (len(in) >> 5) << 5
remain := len(in) - done
if remain > 0 {
for i := done; i < len(in); i++ {
out[i] ^= in[i]
}
}
}