_t3               591 include/math-emu/op-4.h     UWtype _t0, _t1, _t2, _t3;						\
_t3               592 include/math-emu/op-4.h     _t0 = x0, _t1 = x1, _t2 = x2, _t3 = x3;				\
_t3               593 include/math-emu/op-4.h     __FP_FRAC_SUB_4 (x3,x2,x1,x0,_t3,_t2,_t1,_t0, y3,y2,y1,y0);		\