1 /* Software floating-point emulation.
2 Return sqrtl(a)
3 Copyright (C) 1997-2022 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 #include "soft-fp.h"
21 #include "quad.h"
22
_Q_sqrt(const long double a)23 long double _Q_sqrt(const long double a)
24 {
25 FP_DECL_EX;
26 FP_DECL_Q(A); FP_DECL_Q(C);
27 long double c;
28
29 FP_INIT_ROUNDMODE;
30 FP_UNPACK_Q(A, a);
31 FP_SQRT_Q(C, A);
32 FP_PACK_Q(c, C);
33 FP_HANDLE_EXCEPTIONS;
34 return c;
35 }
36