1/* Square root of long double (ldbl-128) value, narrowing the result to double.
2 Copyright (C) 2021-2024 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#define f32xsqrtf64x __hide_f32xsqrtf64x
20#define f32xsqrtf128 __hide_f32xsqrtf128
21#define f64sqrtf64x __hide_f64sqrtf64x
22#define f64sqrtf128 __hide_f64sqrtf128
23#include <math.h>
24#undef f32xsqrtf64x
25#undef f32xsqrtf128
26#undef f64sqrtf64x
27#undef f64sqrtf128
28
29#include <math-narrow.h>
30
31double
32__dsqrtl (_Float128 x)
33{
34 NARROW_SQRT_ROUND_TO_ODD (x, double, union ieee854_long_double, l,
35 mantissa3);
36}
37libm_alias_double_ldouble (sqrt)
38

source code of glibc/sysdeps/ieee754/ldbl-128/s_dsqrtl.c