| 1. lime, limestone. calcan extensible, advanced desk calculator and mathematical tool written in emacs lisp by dave gillespie 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 |