Bill Daly on Thu, 02 Jul 2009 16:50:28 +0200

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This looks like a bug (A12-140)

Version 2.4.2 for Windows gives me this:

   facq1 = nffactor(nfq1, q1);
   rootsq1 = -subst(lift(facq1[,1]),x,0);

'facq1' is a 24*2 matrix (the output of nffactor), but 'rootsq1', which should be t_COL [24,1] is instead t_VEC [1,24]. This is in the middle of a longish piece of code, so it wouldn't surprise me if it's sporadic. (It's easy enough to work around, but it looks sort of dumb.)

Regards, Bill