What should I use for a BigInt class in .NET?

Question

Until BCL finally ships System.Numeric.BigInt, what do you guys use for arbitrary precision integers?

score 8 · Accepted Answer · answered Feb 20 '09 at 00:10

8

You could try mine on codeplex: BigInteger

Or here's another: codeproject

answered Feb 20 '09 at 00:10

Scott

score 4 · Answer 2 · answered Feb 20 '09 at 00:34

4

F# has Microsoft.FSharp.Math.BigInt and Microsoft.FSharp.Math.BigNum.

answered Feb 20 '09 at 00:34

Richard

What's the difference, do you know? – nawfal Dec 05 '12 at 17:43
1

From the [docs](http://msdn.microsoft.com/en-us/library/ee620695.aspx): "This type is provided for use only with the F# Core Library Versions that targets .NET Framework 2.0. If you are using .NET Framework 4, use the .NET Framework 4 type with the same name, BigInteger." – Richard Dec 06 '12 at 08:17
Thanks, but I was asking what's the difference between FSharp.BigInt and BigNum. – nawfal Dec 06 '12 at 09:47
@nawfal I think they're both obsolete, but for information: `BigInt`: integers, `BigNum`: rationals. – Richard Dec 06 '12 at 10:07
Ok I get it. Should have been obvious for me from the name! :) – nawfal Dec 06 '12 at 10:11

score 3 · Answer 3 · edited May 23 '17 at 11:48

3

Thankfully, all this will be sorted out when the BCL finally ships a standardized BigInt.

UPDATE 2012 System.Numberics.BigInteger is now included in the .NET framework.

edited May 23 '17 at 11:48

Community

answered Jun 23 '09 at 17:52

Sam Saffron · Answer 4 · 2009-02-19T23:57:57.813

1

Have a look at

edited Feb 19 '09 at 23:57

answered Feb 19 '09 at 23:51

Sam Saffron

Is it available as a simple DLL I can reference? (I'm coding in C# if that matters). – ripper234 Feb 19 '09 at 23:56
It's MPL so you should be free to reuse the file – Sam Saffron Feb 19 '09 at 23:58
I wasn't asking about the license terms, just about the ease of use. – ripper234 Feb 20 '09 at 00:01
It looks like it would be fairly simple to extract this from iron ruby – Sam Saffron Feb 20 '09 at 00:03

4 Answers4