What's the best (for speed) arbitrary-precision library for C++? [duplicate]

问题

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• The best cross platform (portable) arbitrary precision math library [closed] 5 answers

I need the fastest library that is available for C++. My platform will be x86 and x86-64 which supports floating points.

回答1:

GMPLIB

GMP is a free library for arbitrary precision arithmetic, operating on signed ... C++ class based interface to all of the above.

来源：https://stackoverflow.com/questions/4486882/whats-the-best-for-speed-arbitrary-precision-library-for-c