Calc

from The Free On-line Dictionary of Computing (8 July 2008)
Calc

   <tool, mathematics> An extensible, advanced desk calculator
   and mathematical tool written in {Emacs Lisp} by Dave
   Gillespie <[email protected]>.  Calc runs as part of {GNU
   Emacs}.  You can use Calc as only a simple four-function
   calculator, but it also provides additional features including
   choice of algebraic or {RPN} ({stack}-based) entry,
   logarithms, trigonometric and financial functions, {arbitrary
   precision}, complex numbers, vectors, matrices, dates, times,
   infinities, sets, algebraic simplification, differentiation,
   and integration.

   Latest version: 2.02, as of 1994-11-08.

   FTP calc-2.02.tar.z from your nearest {GNU archive site}.

   (2000-10-20)
    

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