/* Add _Float64 values, converting the result to _Float32x.  i386 version.

   Copyright (C) 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/>.  */

#include <math.h>

#include <fpu_control.h>

#include <math-narrow-eval.h>

#include <math_private.h>

#include <math-narrow.h>

_Float32x

__f32xaddf64 (_Float64 x, _Float64 y)

{

  /* To avoid double rounding, set double precision for the addition.

     math_narrow_eval is still needed to eliminate excess range in the

     case of overflow.  If the result of the addition is in the

     subnormal range for double, it is exact, so no issues of double

     rounding for subnormals arise.  */

  fpu_control_t cw, cw_double;

  _FPU_GETCW (cw);

  cw_double = (cw & ~_FPU_EXTENDED) | _FPU_DOUBLE;

  _FPU_SETCW (cw_double);

  _Float32x ret = math_narrow_eval (x + y);

  _FPU_SETCW (cw);

  CHECK_NARROW_ADD (ret, x, y);

  return ret;

}

libm_alias_float32x_float64 (add)