Question

I need a c# number something that can handle very large numbers but also fraction support, I looked at System.Numerics.BigInteger coming in .NET 4.0 but I can’t get it to work with fractions.

something i = 2;
something j = 5;
something k = i/j; //should be 0.4

when i tried

 BigInteger i = 2;
 BigInteger j = 5;
 double d = (double)(i/j); //d is 0.0

Does anybody know such a library?

Answer 1

I once used this library:
W3b.Sine. It’s:

An arbitrary-precision decimal number
library developed in C#.

You could also try http://www.fractal-landscapes.co.uk/bigint.html. However, I have no experience using it.