FD.abs

[Torsten Anders]

Hi,

For a FD search I need the absolute value of a difference. So far I came only 
up with a solution introducing a choice point (see example below). Can this 
be done without?

proc {AbsDiff X Y Z}
   dis (Y-X) >=: 0 then Z =: Y-X
   [] (Y-X) <: 0 then Z =: X-Y
   end
end

Thanks,
Torsten Anders
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