Intxlogy function?

[Pietro F. Maggi]

Sorry if this is not the right place to ask this :-)

I'm converting a program for my thesis work from Matlab to Octave and I've 
encountered a call to the INTXLOGY function, I've searched around with no 
success so Can someone tell me what this function do and how to implement it in 
Octave?

The piece of code of interest is

for Nprob=1:length(prob),
  y(Nprob)=intxlogy(Atcelx,Prcelx,prob(Nprob));
  if (y(Nprob)<0) | (y(Nprob)>=1E+32),
    y(Nprob)=0;
  end;
end;

Thanks to everibody and sorry for my english

CIAO
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Pietro F. Maggi
Via G. Galilei 11
22053 Lecco Italy
tel.0341/498060
address@hidden
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