Package: pari
Version:   git-30598f4

? \p1000
   realprecision = 1001 significant digits (1000 digits displayed)
? matfrobenius([1,0,0,1,0,1;1,1,0,1,1,0;0,1,1,0,0,1;1,0,1,1,1,0;1,1,1,1,1,1;0,0,1,0,0,0]*1.);
  *** matfrobenius: Warning: inexact computation in RgX_extgcd.
  *** matfrobenius: Warning: inexact computation in RgX_extgcd.
  ***   at top-level: matfrobenius([1,0,0,
  ***                 ^--------------------
  *** matfrobenius: precision too low in matfrobenius.

matfrobenius() issues have been discussed in bug reports 167 and 925,  I am not sure whether I can expect the above to work given the current implementation and constrains.

Thanks

Igor