Scientific calculator for PalmOS with graphing, financial operations, number conversions, complex numbers and much more.

requires MathLib, included in the ZIP file

other languages available also in the ZIP file.

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Version History

v1.25

• Notes:
  This release includes a new completely updated manual (also available as Plucker database) replacing the tutorial. There are a lot of additions and changes to the UI and the graph screen. List and Matrix manipulations are improved. See the Change Log for more details.
• Changes:
  • New manual replaces the old tutorial.
  • Manual also available as Plucker (www.plkr.org) database: EasyCalcManual.pdb.
  • UI changes to make it more obvious which areas/buttons can be tapped.
  • Major overhaul of graph setup form. Colors, axes labels, etc are now individually selectable.
  • Change point line style to use small crosses instead of dots to increase visibility on HiRes screens.
  • Deg/Rad/Grd setting respected for drawing and tracking polar graphs.
  • Integer arithmetic is now signed.
  • "Reduce Precision" preference defaults now to false.
  • Many improvements in list/matrix use. See manual for details.
  • round(), trunc(), ceil() and floor() now support complex numbers.
  • 'if' statement now uses lazy evaluation, allowing recursive definitions.
  • Check for stack overflow added during expression evaluation.
  • Default stack size increased from 4 to 8K for PalmOS >= 3.0.
  • Russian translation updated.
  • Many bug fixes.

V1.24

• adds hires and Dynamic Input Area (DIA) support to Easycalc.
• Hires support for Palm and Sony OS5 devices and Sony PalmOS 4 devices with HRLib. This included color icons, button images and graph plotting.
• DIA (Dynamic Input Area) support for Palm, Sony and Handera devices thanks to the PalmResize code from Alexander Pruss http://sourceforge.net/projects/palmresize).
• Added graph tracking for parametric functions.
• New resizable about form.
• Size of lists, databse items was stored as an Int16. Changed to UInt16. This increases the max list size to 4091.
• Added a lot of error checking for out of memory conditions.
• Changes to the build system (configure) to make all options available as configure options.
• Many bugfixes. See the file ChangeLog in the distribution or check the CVS history.

v1.23 21 Jun 2006

• Some bug fixes, some new features.

Features

Easycalc was a simple scientific calculator. You enter a formula, press the Execute button and you can read the result.

* Normal, Scientific and Engineering floating point mode
* All functions you would find on normal scientific calculator
* Unlimited number of variables and functions
* Graph support
* GuessIt function - it tries to find out, what the result means, like "pi/2", "e^(3/4)" and "47/23".
* Integer operations (unsigned 32bit), conversions between Bin/Oct/Oct/Hex
* Function solving through fzero' with three parameters - min,max and function, it solves the function (e.g. fzero(0:10:f()), where f()="x^2" will return '2'.). It is possible to write fzero(0:2:"(x-1)(x+1)") too.
* Up to 15 decimal points
* Scrollable results field
* Complex numbers, including a basic guessit for complexes
* Fast menu for selecting variables and functions
* Results history
* Normal/Polar/parameter graphs
* Tracing of functions in all modes
* Table mode for functions
* Installable version of EasyCalc with no graphs, you'll save about 20K of space, installable version with/without special functions
* Raffael added/improved many functions regarding some hard mathematics.
* Added popup-menu for built-in functions
* Some small changes to UI
* If you select the text and press a function button (e.g. sin), the selected text gets inserted into the function.
* Export to memopad. If you want import from memopad, write me, I'm not sure if it is a useful feature and I'll not add it until somone writes.
* Function/variable name can have letters 'G-Z' and numbers as part of their name