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-rw-r--r--math/divtc3.c75
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diff --git a/math/divtc3.c b/math/divtc3.c
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-/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Richard Henderson <rth@redhat.com>, 2005.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <stdbool.h>
-#include <math.h>
-#include <complex.h>
-
-attribute_hidden
-long double _Complex
-__divtc3 (long double a, long double b, long double c, long double d)
-{
-  long double denom, ratio, x, y;
-
-  /* ??? We can get better behavior from logarithmic scaling instead of
-     the division.  But that would mean starting to link libgcc against
-     libm.  We could implement something akin to ldexp/frexp as gcc builtins
-     fairly easily...  */
-  if (fabsl (c) < fabsl (d))
-    {
-      ratio = c / d;
-      denom = (c * ratio) + d;
-      x = ((a * ratio) + b) / denom;
-      y = ((b * ratio) - a) / denom;
-    }
-  else
-    {
-      ratio = d / c;
-      denom = (d * ratio) + c;
-      x = ((b * ratio) + a) / denom;
-      y = (b - (a * ratio)) / denom;
-    }
-
-  /* Recover infinities and zeros that computed as NaN+iNaN; the only cases
-     are nonzero/zero, infinite/finite, and finite/infinite.  */
-  if (isnan (x) && isnan (y))
-    {
-      if (denom == 0.0 && (!isnan (a) || !isnan (b)))
-	{
-	  x = __copysignl (INFINITY, c) * a;
-	  y = __copysignl (INFINITY, c) * b;
-	}
-      else if ((isinf (a) || isinf (b)) && isfinite (c) && isfinite (d))
-	{
-	  a = __copysignl (isinf (a) ? 1 : 0, a);
-	  b = __copysignl (isinf (b) ? 1 : 0, b);
-	  x = INFINITY * (a * c + b * d);
-	  y = INFINITY * (b * c - a * d);
-	}
-      else if ((isinf (c) || isinf (d)) && isfinite (a) && isfinite (b))
-	{
-	  c = __copysignl (isinf (c) ? 1 : 0, c);
-	  d = __copysignl (isinf (d) ? 1 : 0, d);
-	  x = 0.0 * (a * c + b * d);
-	  y = 0.0 * (b * c - a * d);
-	}
-    }
-
-  return x + I * y;
-}