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| 1 | +/* Software floating-point emulation. |
| 2 | + Return an IEEE half converted to IEEE quad |
| 3 | + Copyright (C) 1997-2016 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 | + In addition to the permissions in the GNU Lesser General Public |
| 12 | + License, the Free Software Foundation gives you unlimited |
| 13 | + permission to link the compiled version of this file into |
| 14 | + combinations with other programs, and to distribute those |
| 15 | + combinations without any restriction coming from the use of this |
| 16 | + file. (The Lesser General Public License restrictions do apply in |
| 17 | + other respects; for example, they cover modification of the file, |
| 18 | + and distribution when not linked into a combine executable.) |
| 19 | +
|
| 20 | + The GNU C Library is distributed in the hope that it will be useful, |
| 21 | + but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 23 | + Lesser General Public License for more details. |
| 24 | +
|
| 25 | + You should have received a copy of the GNU Lesser General Public |
| 26 | + License along with the GNU C Library; if not, see |
| 27 | + <http://www.gnu.org/licenses/>. */ |
| 28 | + |
| 29 | +#define FP_NO_EXACT_UNDERFLOW |
| 30 | +#include "soft-fp.h" |
| 31 | +#include "half.h" |
| 32 | +#include "quad.h" |
| 33 | + |
| 34 | +TFtype |
| 35 | +__extendhftf2 (HFtype a) |
| 36 | +{ |
| 37 | + FP_DECL_EX; |
| 38 | + FP_DECL_H (A); |
| 39 | + FP_DECL_Q (R); |
| 40 | + TFtype r; |
| 41 | + |
| 42 | + FP_INIT_EXCEPTIONS; |
| 43 | + FP_UNPACK_RAW_H (A, a); |
| 44 | +#if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q |
| 45 | + FP_EXTEND (Q, H, 4, 1, R, A); |
| 46 | +#else |
| 47 | + FP_EXTEND (Q, H, 2, 1, R, A); |
| 48 | +#endif |
| 49 | + FP_PACK_RAW_Q (r, R); |
| 50 | + FP_HANDLE_EXCEPTIONS; |
| 51 | + |
| 52 | + return r; |
| 53 | +} |
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