public static int EntryPadWidth <M, N>(this TableSpan <M, N, double> src)
where M : unmanaged, ITypeNat
where N : unmanaged, ITypeNat
=> Digital.digits(base10, ((ulong)src.Reduce(Math.Max))).Length;
public static double MaxEntry <M, N>(this TableSpan <M, N, double> src)
where M : unmanaged, ITypeNat
where N : unmanaged, ITypeNat
=> src.Reduce(Math.Max);