in news:Xns### [at] povrayorg ingo wrote:

> Expected the outcome of the scene below to be te other way around.
> 

Also '<=' does not seem to behave as one would expect.

                                           //a=  -2 -1  0  1  1
                                           //------------------
//#declare F=function(a){a>=0}       //returns    0  0  1  1  1

  #declare F=function(a){a<=0}       //returns    1  1  0  0  0 
                                     //expected   1  1  1  0  0


Ingo

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