1 | /* Software floating-point emulation. |
2 | (*c) = (long 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 | void _Qp_dtoq(long double *c, const double a) |
25 | { |
26 | FP_DECL_EX; |
27 | FP_DECL_D(A); |
28 | FP_DECL_Q(C); |
29 | |
30 | FP_INIT_ROUNDMODE; |
31 | FP_UNPACK_RAW_D(A, a); |
32 | #if _FP_W_TYPE_SIZE < 64 |
33 | FP_EXTEND(Q,D,4,2,C,A); |
34 | #else |
35 | FP_EXTEND(Q,D,2,1,C,A); |
36 | #endif |
37 | FP_PACK_RAW_QP(c, C); |
38 | QP_HANDLE_EXCEPTIONS(__asm ( |
39 | " fdtoq %1, %%f60\n" |
40 | " std %%f60, [%0]\n" |
41 | " std %%f62, [%0+8]\n" |
42 | " " : : "r" (c), "e" (a) : QP_CLOBBER)); |
43 | } |
44 | |