C# - problem with very small numbers - not enough digits in double datatype

I'm writing a program in C# which suppose to calculate very small numbers. However, all my calculations are getting NaN value because they are too sm开发者_StackOverflowall for the 'double' datatype.

Is there an option in C# to deal with such situations?

Thanks, Eden.

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try decimal

Edit: Also, .NET 4 introduces BigInteger which could probably be used to represent whatever floating point values\data range you are trying to represent.