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Re: adding Calc to menu

From: Robert J. Chassell
Subject: Re: adding Calc to menu
Date: Tue, 14 May 2002 18:26:11 +0000 (UTC)

   ... it would be much nicer if there was only one
   calculator program that let you choose RPN or infix entry via a

Calc uses RPN by default.  You can change how you you handle algebraic
expressions from RPN to infix format.  

I don't think you can change the standard entry for something like
adding 2 and 2 into infix mode in the normal Calc interface.  (I
could be wrong about this.)

However, Emacs Calc offers `Quick Mode', M-# q, which takes entries in
infix mode by default.  I just added 2+2.

    `Quick Mode' prompts you to type any formula in standard algebraic
    notation (like `4 - 2/3') and then displays the result at the
    bottom of the Emacs screen....

    You are then back in the same editing buffer you were in before,
    ready to continue editing or to type `M-# q' again to do another
    quick calculation.  The result of the calculation will also be in
    the Emacs "kill ring" so that a `C-y' command at this point will
    yank the result into your editing buffer.

Also, on X windowing systems, Emacs Calc offers "Keypad Mode", which
is a mouse-based interface to the Calculator.  This might be
considered the `simplest' calculator of them all, except that the
default is RPN.

    M-# k
    M-x calc-keypad

    Robert J. Chassell                  address@hidden
    Rattlesnake Enterprises             http://www.rattlesnake.com

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