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diff --git a/sysdeps/ieee754/ldbl-128ibm/e_hypotl.c b/sysdeps/ieee754/ldbl-128ibm/e_hypotl.c
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-/* @(#)e_hypotl.c 5.1 93/09/24 */
-/*
- * ====================================================
- * 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: e_hypotl.c,v 1.9 1995/05/12 04:57:27 jtc Exp $";
-#endif
-
-/* __ieee754_hypotl(x,y)
- *
- * Method :
- * If (assume round-to-nearest) z=x*x+y*y
- * has error less than sqrtl(2)/2 ulp, than
- * sqrtl(z) has error less than 1 ulp (exercise).
- *
- * So, compute sqrtl(x*x+y*y) with some care as
- * follows to get the error below 1 ulp:
- *
- * Assume x>y>0;
- * (if possible, set rounding to round-to-nearest)
- * 1. if x > 2y use
- * x1*x1+(y*y+(x2*(x+x1))) for x*x+y*y
- * where x1 = x with lower 53 bits cleared, x2 = x-x1; else
- * 2. if x <= 2y use
- * t1*y1+((x-y)*(x-y)+(t1*y2+t2*y))
- * where t1 = 2x with lower 53 bits cleared, t2 = 2x-t1,
- * y1= y with lower 53 bits chopped, y2 = y-y1.
- *
- * NOTE: scaling may be necessary if some argument is too
- * large or too tiny
- *
- * Special cases:
- * hypotl(x,y) is INF if x or y is +INF or -INF; else
- * hypotl(x,y) is NAN if x or y is NAN.
- *
- * Accuracy:
- * hypotl(x,y) returns sqrtl(x^2+y^2) with error less
- * than 1 ulps (units in the last place)
- */
-
-#include "math.h"
-#include "math_private.h"
-
-static const long double two600 = 0x1.0p+600L;
-static const long double two1022 = 0x1.0p+1022L;
-
-#ifdef __STDC__
- long double __ieee754_hypotl(long double x, long double y)
-#else
- long double __ieee754_hypotl(x,y)
- long double x, y;
-#endif
-{
- long double a,b,t1,t2,y1,y2,w,kld;
- int64_t j,k,ha,hb;
-
- GET_LDOUBLE_MSW64(ha,x);
- ha &= 0x7fffffffffffffffLL;
- GET_LDOUBLE_MSW64(hb,y);
- hb &= 0x7fffffffffffffffLL;
- if(hb > ha) {a=y;b=x;j=ha; ha=hb;hb=j;} else {a=x;b=y;}
- a = fabsl(a); /* a <- |a| */
- b = fabsl(b); /* b <- |b| */
- if((ha-hb)>0x3c0000000000000LL) {return a+b;} /* x/y > 2**60 */
- k=0;
- kld = 1.0L;
- if(ha > 0x5f30000000000000LL) { /* a>2**500 */
- if(ha >= 0x7ff0000000000000LL) { /* Inf or NaN */
- u_int64_t low;
- w = a+b; /* for sNaN */
- GET_LDOUBLE_LSW64(low,a);
- if(((ha&0xfffffffffffffLL)|(low&0x7fffffffffffffffLL))==0)
- w = a;
- GET_LDOUBLE_LSW64(low,b);
- if(((hb^0x7ff0000000000000LL)|(low&0x7fffffffffffffffLL))==0)
- w = b;
- return w;
- }
- /* scale a and b by 2**-600 */
- ha -= 0x2580000000000000LL; hb -= 0x2580000000000000LL; k += 600;
- a /= two600;
- b /= two600;
- k += 600;
- kld = two600;
- }
- if(hb < 0x20b0000000000000LL) { /* b < 2**-500 */
- if(hb <= 0x000fffffffffffffLL) { /* subnormal b or 0 */
- u_int64_t low;
- GET_LDOUBLE_LSW64(low,b);
- if((hb|(low&0x7fffffffffffffffLL))==0) return a;
- t1=two1022; /* t1=2^1022 */
- b *= t1;
- a *= t1;
- k -= 1022;
- kld = kld / two1022;
- } else { /* scale a and b by 2^600 */
- ha += 0x2580000000000000LL; /* a *= 2^600 */
- hb += 0x2580000000000000LL; /* b *= 2^600 */
- k -= 600;
- a *= two600;
- b *= two600;
- kld = kld / two600;
- }
- }
- /* medium size a and b */
- w = a-b;
- if (w>b) {
- SET_LDOUBLE_WORDS64(t1,ha,0);
- t2 = a-t1;
- w = __ieee754_sqrtl(t1*t1-(b*(-b)-t2*(a+t1)));
- } else {
- a = a+a;
- SET_LDOUBLE_WORDS64(y1,hb,0);
- y2 = b - y1;
- SET_LDOUBLE_WORDS64(t1,ha+0x0010000000000000LL,0);
- t2 = a - t1;
- w = __ieee754_sqrtl(t1*y1-(w*(-w)-(t1*y2+t2*b)));
- }
- if(k!=0)
- return w*kld;
- else
- return w;
-}