58 lines
1.0 KiB
Go
58 lines
1.0 KiB
Go
//+build !noasm
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//+build !appengine
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//+build !gccgo
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// Copyright 2015, Klaus Post, see LICENSE for details.
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// Copyright 2017, Minio, Inc.
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package reedsolomon
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//go:noescape
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func galMulNEON(c uint64, in, out []byte)
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//go:noescape
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func galMulXorNEON(c uint64, in, out []byte)
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func galMulSlice(c byte, in, out []byte, o *options) {
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if c == 1 {
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copy(out, in)
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return
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}
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var done int
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galMulNEON(uint64(c), in, out)
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done = (len(in) >> 5) << 5
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remain := len(in) - done
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if remain > 0 {
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mt := mulTable[c][:256]
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for i := done; i < len(in); i++ {
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out[i] = mt[in[i]]
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}
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}
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}
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func galMulSliceXor(c byte, in, out []byte, o *options) {
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if c == 1 {
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sliceXor(in, out, o)
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return
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}
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var done int
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galMulXorNEON(uint64(c), in, out)
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done = (len(in) >> 5) << 5
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remain := len(in) - done
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if remain > 0 {
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mt := mulTable[c][:256]
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for i := done; i < len(in); i++ {
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out[i] ^= mt[in[i]]
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}
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}
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}
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// slice galois add
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func sliceXor(in, out []byte, o *options) {
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for n, input := range in {
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out[n] ^= input
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}
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}
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