/* NaN payload handling or ldbl-128ibm.

   Copyright (C) 1997-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   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/>.  */

#define SET_NAN_PAYLOAD(flt, mant)				\

  do								\

    {								\

      union ibm_extended_long_double u;				\

      u.ld = (flt);						\

      u.d[0].ieee_nan.mantissa0 = (mant) >> 32;			\

      u.d[0].ieee_nan.mantissa1 = (mant);			\

      if ((u.d[0].ieee.mantissa0 | u.d[0].ieee.mantissa1) != 0)	\

	(flt) = u.ld;						\

    }								\

  while (0)