public static void SdcaL1UpdateDense(float primalUpdate, int count, ReadOnlySpan <float> source, float threshold, Span <float> v, Span <float> w) { Contracts.AssertNonEmpty(source); Contracts.AssertNonEmpty(v); Contracts.AssertNonEmpty(w); Contracts.Assert(count > 0); Contracts.Assert(count <= source.Length); Contracts.Assert(count <= v.Length); Contracts.Assert(count <= w.Length); if (Avx.IsSupported) { AvxIntrinsics.SdcaL1UpdateU(primalUpdate, count, source, threshold, v, w); } else if (Sse.IsSupported) { SseIntrinsics.SdcaL1UpdateU(primalUpdate, count, source, threshold, v, w); } else { for (int i = 0; i < count; i++) { v[i] += source[i] * primalUpdate; float value = v[i]; w[i] = Math.Abs(value) > threshold ? (value > 0 ? value - threshold : value + threshold) : 0; } } }
private static void SdcaL1UpdateDense(float primalUpdate, Span <float> src, float threshold, Span <float> v, Span <float> w) { if (Avx.IsSupported) { AvxIntrinsics.SdcaL1UpdateU(primalUpdate, src, threshold, v, w); } else if (Sse.IsSupported) { SseIntrinsics.SdcaL1UpdateU(primalUpdate, src, threshold, v, w); } else { for (int i = 0; i < src.Length; i++) { v[i] += src[i] * primalUpdate; float value = v[i]; w[i] = Math.Abs(value) > threshold ? (value > 0 ? value - threshold : value + threshold) : 0; } } }
public void SdcaL1UpdateU() => AvxIntrinsics.SdcaL1UpdateU(DefaultScale, Length, src, DefaultScale, dst, result);
public void ManagedSdcaL1UpdateUPerf() { AvxIntrinsics.SdcaL1UpdateU(DEFAULT_SCALE, new Span <float>(src, 0, LEN), DEFAULT_SCALE, new Span <float>(dst, 0, LEN), new Span <float>(result, 0, LEN)); }
public void SdcaL1UpdateU() => AvxIntrinsics.SdcaL1UpdateU(DEFAULT_SCALE, new Span <float>(src, 0, LEN), DEFAULT_SCALE, new Span <float>(dst, 0, LEN), new Span <float>(result, 0, LEN));
public void SdcaL1UpdateU() => AvxIntrinsics.SdcaL1UpdateU(DefaultScale, new Span <float>(src, 0, Length), DefaultScale, new Span <float>(dst, 0, Length), new Span <float>(result, 0, Length));