RFACT
#define RFACT(x, y) (RFACT_NONE * ((x) + (y)) / (y))
#define RFACT(x, y) (RFACT_NONE * ((x) + (y)) / (y))
#define RFACT(x, y) (RFACT_NONE * ((x) + (y)) / (y))
#define RFACT(x, y) (RFACT_NONE * ((x) + (y)) / (y))