Apply Eigen's normalize (appears to be equivalent to a VUNITIZE) to a…

… libbn vect_t.

src/libbn/tests/eigen.cpp

@@ -71,6 +71,14 @@ int main(int UNUSED(ac), const char **av)
  bu_exit(BRLCAD_ERROR, "Vector assignment failed\n");
  bu_log("Updated Vector: %g %g %g\n", V3ARGS(bn_vec));
 
+ // Unitize both the comparison vector (with libbn) and the original
+ // vector (with Eigen). Make sure the results are the same.
+ VUNITIZE(cmp_vec);
+ evec.normalize();
+ if (!VNEAR_EQUAL(cmp_vec, bn_vec, SMALL_FASTF))
+ bu_exit(BRLCAD_ERROR, "Vector unitization failed\n");
+ bu_log("Normalized Vector: %g %g %g\n", V3ARGS(bn_vec));
+
  return 0;
 }