public static float DotProductDense(ReadOnlySpan <float> left, ReadOnlySpan <float> right, int count)
{
Contracts.AssertNonEmpty(left);
Contracts.AssertNonEmpty(right);
Contracts.Assert(count > 0);
Contracts.Assert(left.Length >= count);
Contracts.Assert(right.Length >= count);
if (Avx.IsSupported)
{
return(AvxIntrinsics.DotU(left, right, count));
}
else if (Sse.IsSupported)
{
return(SseIntrinsics.DotU(left, right, count));
}
else
{
float result = 0;
for (int i = 0; i < count; i++)
{
result += left[i] * right[i];
}
return(result);
}
}
public static float DotProductDense(ReadOnlySpan <float> a, ReadOnlySpan <float> b, int count)
{
Contracts.AssertNonEmpty(a);
Contracts.AssertNonEmpty(b);
Contracts.Assert(count > 0);
Contracts.Assert(a.Length >= count);
Contracts.Assert(b.Length >= count);
if (Avx.IsSupported)
{
return(AvxIntrinsics.DotU(a, b, count));
}
else if (Sse.IsSupported)
{
return(SseIntrinsics.DotU(a, b, count));
}
else
{
float result = 0;
for (int i = 0; i < count; i++)
{
result += a[i] * b[i];
}
return(result);
}
}
private static float DotProductDense(Span <float> a, Span <float> b)
{
if (Sse.IsSupported)
{
return(SseIntrinsics.DotU(a, b));
}
else
{
float result = 0;
for (int i = 0; i < b.Length; i++)
{
result += a[i] * b[i];
}
return(result);
}
}