public object Diagonal(object x)
{
if (x == null)
{
throw new ArgumentNullException(nameof(x));
}
if (x is KalkMatrix m)
{
return(KalkMatrix.Diagonal(m));
}
if (x is KalkVector v)
{
return(KalkVector.Diagonal(v));
}
throw new ArgumentException($"Invalid argument type {Engine.GetTypeName(x)}. Expecting a matrix or a vector type.", nameof(x));
}
