EVEN_F
field = (bktr_status & BT848_INT_FIELD) ? EVEN_F : ODD_F;
&&(field==EVEN_F)) {
case METEOR_WANT_EVEN : w_field = EVEN_F ; break;
default : w_field = (ODD_F|EVEN_F); break;
case METEOR_ONLY_EVEN_FIELDS : req_field = EVEN_F ; break;
default : req_field = (ODD_F|EVEN_F);
if ((field == EVEN_F) && (w_field == EVEN_F))
else if ((field == ODD_F) && (req_field == (ODD_F|EVEN_F)) &&
(w_field == (ODD_F|EVEN_F)))
else if ((field == ODD_F) && (req_field == (ODD_F|EVEN_F)) &&