tool, mathematics An extensible, advanced desk calculator

and mathematical tool written in Emacs Lisp by Dave

Gillespie [email protected]. Calc runs as part of GNUEmacs. 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, arbitraryprecision, complex numbers, vectors, matrices, dates, times,

infinities, sets, algebraic simplification, differentiation,

and integration.