Update most of libquadmath/math/ from glibc, automate update (PR libquadmath/68686).

[thirdparty/gcc.git] / libquadmath / math / fmaxq.c

/* Return maximum numeric value of X and Y.
   Copyright (C) 1997-2018 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, see
   <http://www.gnu.org/licenses/>.  */

#include "quadmath-imp.h"

__float128
fmaxq (__float128 x, __float128 y)
{
  if (__builtin_isgreaterequal (x, y))
    return x;
  else if (__builtin_isless (x, y))
    return y;
  else if (issignalingq (x) || issignalingq (y))
    return x + y;
  else
    return isnanq (y) ? x : y;
}