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High-bit Math? (128 or 256)

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Renegade:
There are some calculations that I'd like to run, but I need some extremely big numbers and some extremely small numbers.

So I need something that will facilitate a very large bit-depth for the number types. e.g. 128 bit or 256 bit. I need integers and non-integers.

I only need to do:


* +
* - (redundant from above)
* *
* / (redundant from above)
* ^
However, ^ needs to accommodate very small numbers or very precise numbers, e.g.


* 1.00000000000000000000000000023423423
* 0.000000000000000000000000000000000000000000000000000000000002342342
An nth root function would be convenient, but isn't needed.

Does anyone know of anything that works and that can help me? Any language is fine by me. Something C-ish would be nice, but I don't care.

x16wda:
Did you look at this?

Renegade:
Did you look at this?
-x16wda (July 24, 2013, 08:14 PM)
--- End quote ---

No. I've not seen that before. I'll look into it. Thanks!

Jibz:
There are a number of bignum libraries available for various languages.

A few examples that appear to support float operations are GNU MP, NTL, MAPM.

And if you can restrict your problems to integer math there are a lot more options (even python, which has a built-in arbitrary precision integer type).

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