sysdeps/i386/fpu/s_f32xmulf64.c

   1 /* Multiply _Float64 values, converting the result to _Float32x.  i386 version.
   2    Copyright (C) 2018-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <math.h>
  20 #include <math-narrow.h>
  21
  22 _Float32x
  23 __f32xmulf64 (_Float64 x, _Float64 y)
  24 {
  25   /* To avoid double rounding, use round-to-odd on long double.  */
  26   NARROW_MUL_ROUND_TO_ODD ((long double) x, (long double) y, double,
  27                            union ieee854_long_double, l, mantissa1);
  28 }
  29 libm_alias_float32x_float64 (mul)