__HI(x) = (__HI(x)&0x7fffffff)|(__HI(y)&0x80000000);
fd_twoints ux, uy; ux.d = x; uy.d = y; __HI(ux) = (__HI(ux)&0x7fffffff)|(__HI(uy)&0x80000000); x = ux.d;
	double fd_copysign(double x, double y)#else	double fd_copysign(x,y)	double x,y;#endif{	__HI(x) = (__HI(x)&0x7fffffff)|(__HI(y)&0x80000000);        return x;}