x = x+x;	 if (FLT_EVAL_METHOD != 0 && FLT_EVAL_METHOD != 1) asm ("" : "=m"(x) : "m"(x)); return x;
	double __nextafter(double x, double y)#else	double __nextafter(x,y)	double x,y;#endif{	int32_t hx,hy,ix,iy;	u_int32_t lx,ly;	EXTRACT_WORDS(hx,lx,x);	EXTRACT_WORDS(hy,ly,y);	ix = hx&0x7fffffff;		/* |x| */	iy = hy&0x7fffffff;		/* |y| */	if(((ix>=0x7ff00000)&&((ix-0x7ff00000)|lx)!=0) ||   /* x is nan */	   ((iy>=0x7ff00000)&&((iy-0x7ff00000)|ly)!=0))     /* y is nan */	   return x+y;	if(x==y) return y;		/* x=y, return y */	if((ix|lx)==0) {			/* x == 0 */	    INSERT_WORDS(x,hy&0x80000000,1);	/* return +-minsubnormal */	    y = x*x;	    if(y==x) return y; else return x;	/* raise underflow flag */	}	if(hx>=0) {				/* x > 0 */	    if(hx>hy||((hx==hy)&&(lx>ly))) {	/* 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||hx>hy||((hx==hy)&&(lx>ly))){/* 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) {#if FLT_EVAL_METHOD == 0 || FLT_EVAL_METHOD == 1	  return x+x;	/* overflow  */#else	  /* Note that y is either +Inf or -Inf.  */	  return x+y;#endif	}	if(hy<0x00100000) {		/* underflow */	    y = x*x;	    if(y!=x) {		/* raise underflow flag */	        INSERT_WORDS(y,hx,lx);		return y;	    }	}	INSERT_WORDS(x,hx,lx);	return x;}