RPNBigFloat

RPN Big Float Calculator is an accurate calculator with precision from 16-bit up to 100.000. The utility supports fast calculation in RPN-Mode or direct formula input.

The tool provides lots of functions up to elliptic integrals, theta-functions, gamma and log gamma, built-in constants for gamma, pi, and Feigenbaum, calculation mode for complex numbers, quaternions, integers and p-adic numbers, and nerdy functions with Klingon user-Interface.