if(hy>=0x7ff00000) return x+x;
if(hy>=0x7ff00000) { x = x+x;	 if (FLT_EVAL_METHOD != 0 && FLT_EVAL_METHOD != 1)  asm ("" : "=m"(x) : "m"(x)); return x; }
	double __nexttoward(double x, long double y)#else	double __nexttoward(x,y)	double x;	long double y;#endif{	int32_t hx,ix;	int64_t hy,iy;	u_int32_t lx;	u_int64_t ly;	EXTRACT_WORDS(hx,lx,x);	GET_LDOUBLE_WORDS64(hy,ly,y);	ix = hx&0x7fffffff;		/* |x| */	iy = hy&0x7fffffffffffffffLL;	/* |y| */	if(((ix>=0x7ff00000)&&((ix-0x7ff00000)|lx)!=0) ||   /* x is nan */	   ((iy>=0x7fff000000000000LL)&&((iy-0x7fff000000000000LL)|ly)!=0))	   						    /* y is nan */	   return x+y;	if((long double) x==y) return y;	/* x=y, return y */	if((ix|lx)==0) {			/* x == 0 */	    double x2;	    INSERT_WORDS(x,(u_int32_t)((hy>>32)&0x80000000),1);/* return +-minsub */	    x2 = x*x;	    if(x2==x) return x2; else return x;	/* raise underflow flag */	}	if(hx>=0) {				/* x > 0 */	    if (hy<0||(ix>>20)>(iy>>48)-0x3c00		|| ((ix>>20)==(iy>>48)-0x3c00		    && (((((int64_t)hx)<<28)|(lx>>4))>(hy&0x0000ffffffffffffLL)			|| (((((int64_t)hx)<<28)|(lx>>4))==(hy&0x0000ffffffffffffLL)			    && (lx&0xf)>(ly>>60))))) {	/* x > y, x -= ulp */		if(lx==0) hx -= 1;		lx -= 1;	    } else {				/* x < y, x += ulp */		lx += 1;		if(lx==0) hx += 1;	    }	} else {				/* x < 0 */	    if (hy>=0||(ix>>20)>(iy>>48)-0x3c00		|| ((ix>>20)==(iy>>48)-0x3c00		    && (((((int64_t)hx)<<28)|(lx>>4))>(hy&0x0000ffffffffffffLL)			|| (((((int64_t)hx)<<28)|(lx>>4))==(hy&0x0000ffffffffffffLL)			    && (lx&0xf)>(ly>>60))))) {	/* x < y, x -= ulp */		if(lx==0) hx -= 1;		lx -= 1;	    } else {				/* x > y, x += ulp */		lx += 1;		if(lx==0) hx += 1;	    }	}	hy = hx&0x7ff00000;	if(hy>=0x7ff00000) return x+x;	/* overflow  */	if(hy<0x00100000) {		/* underflow */	    double x2 = x*x;	    if(x2!=x) {		/* raise underflow flag */	        INSERT_WORDS(x2,hx,lx);		return x2;	    }	}	INSERT_WORDS(x,hx,lx);	return x;}