HSV_DESC_TYPE
while (HSV_DESC_TYPE(volp) != VD_EOV) {
switch (HSV_DESC_TYPE(volp)) {
while (HSV_DESC_TYPE(volp) != VD_EOV) {
switch (HSV_DESC_TYPE(volp)) {
HSV_DESC_TYPE(volp) != VD_EOV; n++) {
switch (HSV_DESC_TYPE(volp)) {