_FP_MUL
#define FP_MUL_D(R,X,Y) _FP_MUL(D,2,R,X,Y)
#define FP_MUL_D(R,X,Y) _FP_MUL(D,1,R,X,Y)
#define FP_MUL_Q(R,X,Y) _FP_MUL(Q,4,R,X,Y)
#define FP_MUL_Q(R,X,Y) _FP_MUL(Q,2,R,X,Y)
#define FP_MUL_S(R,X,Y) _FP_MUL(S,1,R,X,Y)