bug fixed, now all 4 tests run.

pub/lib/opr.cpp

@@ -239,8 +239,7 @@ void NOperate::Pointwise( string llabel )
                     else
                         fout->V[j]->z[lref.num] = val;
                 } else if ( lref.typ==CVar::_CP ) {
-                    double val = T->tree_point_val( k, j )->to_b();
-                    (P2C(fout))->VC(j)->P[lref.num] = val;
+                    (P2C(fout))->VC(j)->P[lref.num] = T->tree_point_val( k, j )->to_r();
                 } else {
                     throw "BUG: invalid oxy";
                 }