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d876f532 UD |
1 | /* Software floating-point emulation. |
2 | Return (double)a | |
2b778ceb | 3 | Copyright (C) 1997-2021 Free Software Foundation, Inc. |
d876f532 | 4 | This file is part of the GNU C Library. |
d876f532 UD |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
d876f532 UD |
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 | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
d876f532 | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 17 | License along with the GNU C Library; if not, see |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
d876f532 UD |
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; | |
fe0b1e85 | 32 | FP_UNPACK_SEMIRAW_Q(A, a); |
69da3c9e | 33 | #if _FP_W_TYPE_SIZE < 64 |
fe0b1e85 | 34 | FP_TRUNC(D,Q,2,4,R,A); |
d876f532 | 35 | #else |
fe0b1e85 | 36 | FP_TRUNC(D,Q,1,2,R,A); |
d876f532 | 37 | #endif |
fe0b1e85 | 38 | FP_PACK_SEMIRAW_D(r, R); |
d876f532 UD |
39 | FP_HANDLE_EXCEPTIONS; |
40 | ||
41 | return r; | |
42 | } |