I'm reviving this question, and making it more specific: Is there a .NET framework library that supports numbers with arbitrary digits of precision?
that helps a little... but i am planning on storing something in the way of billions of digits. I was thinking something along the lines of a string solution but have no clue where to start.
RCIX
2009-07-23 05:06:01
+3
A:
You could try the old method of mantissa. Basically you could have an 64 bit integer for storing the number and then a 64 bit integer for storing the exponent (which could be negative). You could build your own object type and overload the arithmetic operators, so it will be treated as a single number. It will require some work, but I think it will be your best option.
Freddy
2009-07-23 05:19:39
Theoretically this would be easy to do; value types are, under the hood, all simple structs anyway.
Jon Limjap
2009-07-23 05:22:41
Never heard of Decimal data type? This solution needs a huge amount of work to be done...
Davide Vosti
2009-07-23 05:26:19
Did you see the questioner comment about "i am planning on storing something in the way of billions of digits"?
Freddy
2009-07-23 05:30:39
You could start with this (which is the opposite of what you want, but it will give you an idea):http://stackoverflow.com/questions/389993/extracting-mantissa-and-exponent-from-double-in-cHere is some theory of the concept : http://www.cs.utah.edu/~zachary/isp/applets/FP/FP.htmlBefore floating points units were available on hardware this was how it was done.
Freddy
2009-07-23 05:41:43
@RCIX: http://msdn.microsoft.com/en-us/library/system.numerics.biginteger(VS.100).aspx
jasonh
2009-11-04 02:33:09
+1
A:
Check this link http://jsfromhell.com/classes/bignumber its a javascript code but you can easily convert it to your own in any language or in C#.
S M Kamran
2009-07-23 06:07:07
+1
A:
Here is a good article on how to represent infinite digits.
good luck
infinitesimal
2009-10-24 05:03:44
+1
A:
Perhaps surprisingly, the Bailey-Borwein-Plouffe formula gives an incremental procedure for computing the next binary or hexadecimal digit of pi without needing to store all the previous digits.
Doug McClean
2009-10-24 05:12:07
+4
A:
Can you wait for .NET 4.0? They're bringing BigInteger directly into the Framework.
On the other hand, if you can't wait, then the J# runtime includes built-in support for java.math.BigInteger and BigDecimal. This is redistributable just like the rest of the .NET Framework.
jasonh
2009-10-30 01:03:59
Here are some BigInteger options: http://stackoverflow.com/questions/25375/how-can-i-represent-a-very-large-integer-in-net/98678#98678
Luke Quinane
2009-10-30 01:07:31
Unfortunately these are arbitrary size integers not arbitrary precision natural numbers.
RCIX
2009-11-02 11:13:19
+1
A:
GnuMpDotNet: http://www.emilstefanov.net/Projects/GnuMpDotNet/
If you need pure .NET consider looking into this: http://www.codeplex.com/IntX/
FractalizeR
2009-11-02 10:54:45
Both of these cover arbitrary size integer classes, but do they offer abitrary precision natural numbers?
RCIX
2009-11-02 11:06:26
Natural number is a non-negative integer. So, they do.http://en.wikipedia.org/wiki/Natural_number
FractalizeR
2009-11-02 12:08:42
+2
A:
There are a few options here.
A good option is W3b.Sine, which is native C#/.NET, and supports arbitrary precision floating point values.
If you are only dealing with integer values, IntX provides support for arbitrary precision integer values. A potentially more mature option would be C# BigInt, but again, this will not support floating point operations.
Reed Copsey
2009-11-04 01:48:03