Value NaN of a variable

Processing Beginners
5

that code must be posted in the
</> Preformatted text from the editor menu

Zx = xx-yy;
Zy = 2xy;

this code can not run.

BUT
should it mean:

        Zx = x*x-y*y;
        Zy = 2*x*y;

the code runs and produce your NaN error.

try

  println( "float   min: "+Float.MIN_VALUE+  " max: "+Float.MAX_VALUE);

that tells you the range of possible FLOAT numbers
your loops do
x = Zx = x*x-y*y;
after 7 loops that value is out of range…

and the position you calculate for the points
point(A,B);
is always 0 , 0

sorry but to run that math 20 000 000 times ( points ) is questionable

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