TDF_USINGFP
ASSYM(TDF_USINGFP, TDF_USINGFP);
if ((td->td_flags & TDF_USINGFP) == 0) {
td->td_flags |= TDF_USINGFP;
if (td->td_flags & TDF_USINGFP) {
td->td_flags &= ~TDF_USINGFP;
if (td->td_flags & TDF_USINGFP) {
td->td_flags &= ~TDF_USINGFP;
td->td_flags |= TDF_USINGFP;
if ((curthread->td_flags & TDF_USINGFP) == 0) {
curthread->td_flags |= TDF_USINGFP;
if (td->td_flags & TDF_USINGFP) {
td->td_flags &= ~TDF_USINGFP;
if (td->td_flags & TDF_USINGFP) {
td->td_flags &= ~TDF_USINGFP;
td->td_flags |= TDF_USINGFP;