public static float Sum(ReadOnlySpan <float> source)
{
Contracts.AssertNonEmpty(source);
if (Avx.IsSupported)
{
return(AvxIntrinsics.Sum(source));
}
else if (Sse.IsSupported)
{
return(SseIntrinsics.Sum(source));
}
else
{
float sum = 0;
for (int i = 0; i < source.Length; i++)
{
sum += source[i];
}
return(sum);
}
}