/* Subtract _Float128 values, converting the result to _Float64x.

   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 <math-narrow.h>

/* math_ldbl.h defines _Float128 to long double for this directory,

   but when they are different, this function must be defined with

   _Float128 arguments to avoid defining an alias with an incompatible

   type.  */

#undef _Float128

_Float64x

__f64xsubf128 (_Float128 x, _Float128 y)

{

#if __HAVE_FLOAT64X_LONG_DOUBLE && __HAVE_DISTINCT_FLOAT128

  NARROW_SUB_ROUND_TO_ODD (x, y, _Float64x, union ieee854_long_double, l,

			   mantissa3);

#else

  NARROW_SUB_TRIVIAL (x, y, _Float64x);

#endif

}

libm_alias_float64x_float128 (sub)