On Sun, 2008-07-27 at 13:12 +1200, Paul Kendall wrote: > revision 14319 "Simplify spatial direct ref selection with FFMIN3()" is wrong! > The intent is to select the smallest +ve number or -1 if there is +ve. > > Using FFMIN3 is not going to do this. It does not ignore -ve values. Why not? Is there some reason why the (unsigned) would not work?