FRFACT_NONE
.fs_rfact = FRFACT_NONE
.fs_rfact = FRFACT_NONE
.fs_rfact = FRFACT_NONE
.fs_rfact = FRFACT_NONE
#define FRFACT(x, y) (FRFACT_NONE * ((x) + (y)) / (y))
#define FNRFACT(x, y) (-FRFACT_NONE * (x) / (y))