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/* Compute projection of complex __float128 value to Riemann sphere.
   Copyright (C) 1997, 1999, 2010 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
   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 "quadmath-imp.h"
 
 
__complex128
cprojq (__complex128 x)
{
  if (isnanq (__real__ x) && isnanq (__imag__ x))
    return x;
  else if (!finiteq (__real__ x) || !finiteq (__imag__ x))
    {
      __complex128 res;
 
      __real__ res = __builtin_inf ();
      __imag__ res = copysignq (0.0, __imag__ x);
 
      return res;
    }
 
  return x;
}