1 /* Software floating-point emulation.
2 Return (long double)(a)
3 Copyright (C) 1997-2021 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
_Q_dtoq(const double a)24 long double _Q_dtoq(const double a)
25 {
26 FP_DECL_EX;
27 FP_DECL_D(A);
28 FP_DECL_Q(C);
29 long double c;
30
31 FP_INIT_ROUNDMODE;
32 FP_UNPACK_RAW_D(A, a);
33 #if _FP_W_TYPE_SIZE < 64
34 FP_EXTEND(Q,D,4,2,C,A);
35 #else
36 FP_EXTEND(Q,D,2,1,C,A);
37 #endif
38 FP_PACK_RAW_Q(c, C);
39 FP_HANDLE_EXCEPTIONS;
40 return c;
41 }
42