text: /* s_nextafterl.c -- long double version of s_nextafter.c.
   * Special version for i387.
   * Conversion to long double by Ulrich Drepper,
   * Cygnus Support, drepper@cygnus.com.
   */
  
  /*
   * ====================================================
   * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   *
   * Developed at SunPro, a Sun Microsystems, Inc. business.
   * Permission to use, copy, modify, and distribute this
   * software is freely granted, provided that this notice
   * is preserved.
   * ====================================================
   */
  
  #if defined(LIBM_SCCS) && !defined(lint)
  static char rcsid[] = "$NetBSD: $";
  #endif
  
  /* IEEE functions
   *	nextafterl(x,y)
   *	return the next machine floating-point number of x in the
   *	direction toward y.
   *   Special cases:
   */
  
  #include <math.h>
  #include <math_private.h>
  
  long double __nextafterl(long double x, long double y)
  {
  	u_int32_t hx,hy,ix,iy;
  	u_int32_t lx,ly;
  	int32_t esx,esy;
  
  	GET_LDOUBLE_WORDS(esx,hx,lx,x);
  	GET_LDOUBLE_WORDS(esy,hy,ly,y);
  	ix = esx&0x7fff;		/* |x| */
  	iy = esy&0x7fff;		/* |y| */
  
  	/* Intel's extended format has the normally implicit 1 explicit
  	   present.  Sigh!  */
  	if(((ix==0x7fff)&&(((hx&0x7fffffff)|lx)!=0)) ||   /* x is nan */
  	   ((iy==0x7fff)&&(((hy&0x7fffffff)|ly)!=0)))     /* y is nan */
  	   return x+y;
  	if(x==y) return y;		/* x=y, return y */
  	if((ix|hx|lx)==0) {			/* x == 0 */
  	    long double u;
  	    SET_LDOUBLE_WORDS(x,esy&0x8000,0,1);/* return +-minsubnormal */
  	    u = math_opt_barrier (x);
  	    u = u * u;
  	    math_force_eval (u);		/* raise underflow flag */
  	    return x;
  	}
  	if(esx>=0) {			/* x > 0 */
  	    if(esx>esy||((esx==esy) && (hx>hy||((hx==hy)&&(lx>ly))))) {
  	      /* x > y, x -= ulp */
  		if(lx==0) {
  		    if (hx <= 0x80000000) {
  		      if (esx == 0) {
  			--hx;
  		      } else {
  			esx -= 1;
  			hx = hx - 1;
  			if (esx > 0)
  			  hx |= 0x80000000;
  		      }
  		    } else
  		      hx -= 1;
  		}
  		lx -= 1;
  	    } else {				/* x < y, x += ulp */
  		lx += 1;
  		if(lx==0) {
  		    hx += 1;
  		    if (hx==0 || (esx == 0 && hx == 0x80000000)) {
  			esx += 1;
  			hx |= 0x80000000;
  		    }
  		}
  	    }
  	} else {				/* x < 0 */
  	    if(esy>=0||(esx>esy||((esx==esy)&&(hx>hy||((hx==hy)&&(lx>ly)))))){
  	      /* x < y, x -= ulp */
  		if(lx==0) {
  		    if (hx <= 0x80000000) {
  			esx -= 1;
  			hx = hx - 1;
  			if ((esx&0x7fff) > 0)
  			  hx |= 0x80000000;
  		    } else
  		      hx -= 1;
  		}
  		lx -= 1;
  	    } else {				/* x > y, x += ulp */
  		lx += 1;
  		if(lx==0) {
  		    hx += 1;
  		    if (hx==0 || (esx == 0xffff8000 && hx == 0x80000000)) {
  			esx += 1;
  			hx |= 0x80000000;
  		    }
  		}
  	    }
  	}
  	esy = esx&0x7fff;
  	if(esy==0x7fff) {
  	    long double u = x + x;	/* overflow  */
  	    math_force_eval (u);
  	}
  	if(esy==0) {
  	    long double u = x*x;		/* underflow */
  	    math_force_eval (u);		/* raise underflow flag */
  	}
  	SET_LDOUBLE_WORDS(x,esx,hx,lx);
  	return x;
  }
  weak_alias (__nextafterl, nextafterl)
  strong_alias (__nextafterl, __nexttowardl)
  weak_alias (__nextafterl, nexttowardl)
  