| 1 | /* Software floating-point emulation. |
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| 2 | Return (double)a |
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| 3 | Copyright (C) 1997-2024 Free Software Foundation, Inc. |
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| 4 | This file is part of the GNU C Library. |
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| 5 | |
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| 6 | The GNU C Library is free software; you can redistribute it and/or |
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| 7 | modify it under the terms of the GNU Lesser General Public |
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| 8 | License as published by the Free Software Foundation; either |
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| 9 | version 2.1 of the License, or (at your option) any later version. |
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| 10 | |
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| 11 | The GNU C Library is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | Lesser General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU Lesser General Public |
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| 17 | License along with the GNU C Library; if not, see |
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| 18 | <https://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #include "soft-fp.h" |
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| 21 | #include "double.h" |
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| 22 | #include "quad.h" |
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| 23 | |
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| 24 | double _Q_qtod(const long double a) |
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| 25 | { |
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| 26 | FP_DECL_EX; |
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| 27 | FP_DECL_Q(A); |
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| 28 | FP_DECL_D(R); |
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| 29 | double r; |
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| 30 | |
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| 31 | FP_INIT_ROUNDMODE; |
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| 32 | FP_UNPACK_SEMIRAW_Q(A, a); |
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| 33 | #if _FP_W_TYPE_SIZE < 64 |
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| 34 | FP_TRUNC(D,Q,2,4,R,A); |
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| 35 | #else |
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| 36 | FP_TRUNC(D,Q,1,2,R,A); |
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| 37 | #endif |
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| 38 | FP_PACK_SEMIRAW_D(r, R); |
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| 39 | FP_HANDLE_EXCEPTIONS; |
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| 40 | |
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| 41 | return r; |
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| 42 | } |
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| 43 | |
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