More about Calc

• The whole Calc has been written by Dave Gillespie , daveg@synaptics.com, who most recently has been seen at ``Synaptics, The Human Interface Company''. They make touchpads,  quickstrokes (for Chinese character input), etc. In the past he's been seen at Caltech, where he wrote

  1.

  p2c: Pascal  to C translator.

  2.

  Calc: the GNU Emacs calculator, last version is 2.02f, dated 15th of December 1996.

  3.

  Chipmunk CAD Tools: jointly with John Lazzaro, in particular Log, a digital and analog circuit simulator.

  4.

  A hypertext system for the HP 9836C.

  5.

  View: a data manipulation and plotting tool.

  a hypertext system for the HP 9836C. Most recently he worked on a digital and analog circuit simulator together with John Lazzaro . He also wrote ``View'', a data manipulation and plotting tool.

• Calc is written entirely in Emacs Lisp and is integrated with Emacs.
• It is based on the HP-28/48  calculators.
• It provides a choice of a stack-based entry (reverse Polish) or of a normal algebraic notation.
• Arbitrary precision floating point and integer calculations are supported.
• All the usual and many unusual mathematical functions, including, of course, logs and trigonometric functions.
• Bitwise operations, non-decimal numbers: useful for programmers.
• Financial functions: future value, internal rate of return.
• Elements of number theory: prime factorization, and modulo N arithmetics for any N.
• Algebraic manipulations including polynomials, calculus, solving equations, numerics, curve fitting, summations, logical operations, and writing your own new rewrite-rules.
• Movements of data between Emacs buffers.
• Embedded Mode for manipulating Calc formulas and data inside any other Emacs buffer.
• Gnuplot based graphics.
• Programming using keyboard macros, algebraic formulas, algebraic rewrite rules, and extended Emacs Lisp.