glibc/sysdeps/ieee754/dbl-64/s_fmul.c

/* Multiply double values, narrowing the result to float.
   Copyright (C) 2018-2019 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
   <https://www.gnu.org/licenses/>.  */

#define f32mulf64 __hide_f32mulf64
#define f32mulf32x __hide_f32mulf32x
#define fmull __hide_fmull
#include <math.h>
#undef f32mulf64
#undef f32mulf32x
#undef fmull

#include <math-narrow.h>

float
__fmul (double x, double y)
{
  NARROW_MUL_ROUND_TO_ODD (x, y, float, union ieee754_double, , mantissa1);
}
libm_alias_float_double (mul)