sysdeps/ieee754/ldbl-128/s_dfmal.c

   1 /* Fused multiply-add of long double (ldbl-128) value, narrowing the result
   2    to double.
   3    Copyright (C) 2021-2024 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #define f32xfmaf64x __hide_f32xfmaf64x
  21 #define f32xfmaf128 __hide_f32xfmaf128
  22 #define f64fmaf64x __hide_f64fmaf64x
  23 #define f64fmaf128 __hide_f64fmaf128
  24 #include <math.h>
  25 #undef f32xfmaf64x
  26 #undef f32xfmaf128
  27 #undef f64fmaf64x
  28 #undef f64fmaf128
  29
  30 #include <math-narrow.h>
  31
  32 double
  33 __dfmal (_Float128 x, _Float128 y, _Float128 z)
  34 {
  35   NARROW_FMA_ROUND_TO_ODD (x, y, z, double, union ieee854_long_double, l,
  36                            mantissa3, false);
  37 }
  38 libm_alias_double_ldouble (fma)