MIDP Graphing Calculator

MIDP Graphing Calculator - A graphing calculator for Java MIDP cell phones.

It actually implements a small programming language, parsing expressions into trees. One can define functions with an arbitrary number of parameters, and use the functions in java.lang.Math in addition to the normal operators.

Some statements to try out in the prompt:

* Plot f – plots the function f
* Plot f(x)=expression – defines a function on the fly and plots it
* Plot sin,cos,tan,f(x)=x^2 – plots each of these functions
* Let x = expression – Define a variable

Note that you can tweak what region is plotted by setting the variables Xmin, Xmax, Ymin, Ymax.

You can also do switch statements, as in:

switch (x) {
 1: 1
 default: 0
}

There are also cond statements (à la lisp COND), but currently there is no support for = or < operators, making it kind of useless.