92 lines
2.1 KiB
Go
92 lines
2.1 KiB
Go
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//go:build (!amd64 || noasm || appengine || gccgo) && (!arm64 || noasm || appengine || gccgo || nopshufb) && (!ppc64le || noasm || appengine || gccgo || nopshufb)
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// Copyright 2015, Klaus Post, see LICENSE for details.
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package reedsolomon
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const pshufb = false
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func galMulSlice(c byte, in, out []byte, o *options) {
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out = out[:len(in)]
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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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mt := mulTable[c][:256]
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for n, input := range in {
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out[n] = mt[input]
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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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out = out[:len(in)]
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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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mt := mulTable[c][:256]
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for n, input := range in {
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out[n] ^= mt[input]
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}
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}
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func init() {
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defaultOptions.useAVX512 = false
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}
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// 4-way butterfly
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func ifftDIT4(work [][]byte, dist int, log_m01, log_m23, log_m02 ffe, o *options) {
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ifftDIT4Ref(work, dist, log_m01, log_m23, log_m02, o)
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}
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// 4-way butterfly
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func ifftDIT48(work [][]byte, dist int, log_m01, log_m23, log_m02 ffe8, o *options) {
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ifftDIT4Ref8(work, dist, log_m01, log_m23, log_m02, o)
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}
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// 4-way butterfly
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func fftDIT4(work [][]byte, dist int, log_m01, log_m23, log_m02 ffe, o *options) {
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fftDIT4Ref(work, dist, log_m01, log_m23, log_m02, o)
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}
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// 4-way butterfly
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func fftDIT48(work [][]byte, dist int, log_m01, log_m23, log_m02 ffe8, o *options) {
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fftDIT4Ref8(work, dist, log_m01, log_m23, log_m02, o)
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}
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// 2-way butterfly forward
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func fftDIT2(x, y []byte, log_m ffe, o *options) {
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// Reference version:
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refMulAdd(x, y, log_m)
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sliceXorGo(x, y, o)
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}
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// 2-way butterfly forward
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func fftDIT28(x, y []byte, log_m ffe8, o *options) {
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// Reference version:
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refMulAdd8(x, y, log_m)
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sliceXorGo(x, y, o)
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}
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// 2-way butterfly inverse
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func ifftDIT2(x, y []byte, log_m ffe, o *options) {
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// Reference version:
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sliceXorGo(x, y, o)
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refMulAdd(x, y, log_m)
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}
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// 2-way butterfly inverse
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func ifftDIT28(x, y []byte, log_m ffe8, o *options) {
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// Reference version:
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sliceXorGo(x, y, o)
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refMulAdd8(x, y, log_m)
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}
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func mulgf16(x, y []byte, log_m ffe, o *options) {
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refMul(x, y, log_m)
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}
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func mulgf8(x, y []byte, log_m ffe8, o *options) {
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refMul8(x, y, log_m)
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}
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