1/* Multiply _Float128 values, converting the result to _Float64x.
2 Copyright (C) 2018-2023 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 <https://www.gnu.org/licenses/>. */
18
19#include <math.h>
20#include <math-narrow.h>
21#include <tininess.h>
22
23/* math_ldbl.h defines _Float128 to long double for this directory,
24 but when they are different, this function must be defined with
25 _Float128 arguments to avoid defining an alias with an incompatible
26 type. */
27#undef _Float128
28
29_Float64x
30__f64xmulf128 (_Float128 x, _Float128 y)
31{
32#if __HAVE_FLOAT64X_LONG_DOUBLE && __HAVE_DISTINCT_FLOAT128
33 NARROW_MUL_ROUND_TO_ODD (x, y, _Float64x, union ieee854_long_double, l,
34 mantissa3, TININESS_AFTER_ROUNDING);
35#else
36 NARROW_MUL_TRIVIAL (x, y, _Float64x);
37#endif
38}
39libm_alias_float64x_float128 (mul)
40