Dear Sir: Thanks for your quick reply. Then it seems that I have to write my own version of BigNumber of BigInt. I would think it will make boost stronger if the BigNumber class is included in boost library. Jave has it, why C++ ignore it? HJin Cory Nelson <phrosty@gmail.com> wrote: On 7/4/07, Hai Jin wrote:

Hi ladies and gentlemen:

I need to calculate 500! (an ACM problem) and think I would need a BigNumber class. Can anyone give hints?

I believe someone is developing Yet Another BigInt Implementation for Summer of Code 07, but I can't seem to find a link anywhere. It's definitely not in Boost yet.

HJin

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On Jul 4, 2007, at 6:06 PM, Hai Jin wrote:

Dear Sir:

Thanks for your quick reply. Then it seems that I have to write my own version of BigNumber of BigInt.

I would think it will make boost stronger if the BigNumber class is included in boost library. Jave has it, why C++ ignore it?

If all you need are bignums take a look at the GNU multiprecision library (http://gmplib.org/). It has a c++ wrapper. Regards, Maurizio