1 | /* Software floating-point emulation. |
2 | Return (double)a |
3 | Copyright (C) 1997-2024 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 "double.h" |
22 | #include "quad.h" |
23 | |
24 | double _Q_qtod(const long double a) |
25 | { |
26 | FP_DECL_EX; |
27 | FP_DECL_Q(A); |
28 | FP_DECL_D(R); |
29 | double r; |
30 | |
31 | FP_INIT_ROUNDMODE; |
32 | FP_UNPACK_SEMIRAW_Q(A, a); |
33 | #if _FP_W_TYPE_SIZE < 64 |
34 | FP_TRUNC(D,Q,2,4,R,A); |
35 | #else |
36 | FP_TRUNC(D,Q,1,2,R,A); |
37 | #endif |
38 | FP_PACK_SEMIRAW_D(r, R); |
39 | FP_HANDLE_EXCEPTIONS; |
40 | |
41 | return r; |
42 | } |
43 | |