isleaf
if (np!=NNULL && !isleaf(np->n_flags)
if (isleaf(np->n_flags)) {
if (isleaf(fnp->n_flags) && fnp->n_type == PARM)
if (isleaf(np->n_flags) && np->n_type == PARM)
if (isleaf(left->n_flags)) {
if (isleaf(right->n_flags)) {
if (isleaf(np->n_flags) && np->n_type == PARM)
if (isleaf(right->n_flags)) {
if (isleaf(np->n_flags)) {
if (isleaf(np->n_flags)) {
if (isleaf(np->n_flags)) {
if (isleaf(rnp->n_flags) && rnp->n_type == PARM)
if (isleaf(lnp->n_flags) && lnp->n_type == PARM)