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1 | /* Software floating-point emulation. |
2 | Truncate IEEE quad into IEEE single | |
b168057a | 3 | Copyright (C) 1997-2015 Free Software Foundation, Inc. |
d876f532 UD |
4 | This file is part of the GNU C Library. |
5 | Contributed by Richard Henderson (rth@cygnus.com) and | |
6 | Jakub Jelinek (jj@ultra.linux.cz). | |
7 | ||
8 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
9 | modify it under the terms of the GNU Lesser General Public |
10 | License as published by the Free Software Foundation; either | |
11 | version 2.1 of the License, or (at your option) any later version. | |
d876f532 | 12 | |
638a783c RM |
13 | In addition to the permissions in the GNU Lesser General Public |
14 | License, the Free Software Foundation gives you unlimited | |
15 | permission to link the compiled version of this file into | |
16 | combinations with other programs, and to distribute those | |
17 | combinations without any restriction coming from the use of this | |
18 | file. (The Lesser General Public License restrictions do apply in | |
19 | other respects; for example, they cover modification of the file, | |
20 | and distribution when not linked into a combine executable.) | |
21 | ||
d876f532 UD |
22 | The GNU C Library is distributed in the hope that it will be useful, |
23 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 25 | Lesser General Public License for more details. |
d876f532 | 26 | |
41bdb6e2 | 27 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
28 | License along with the GNU C Library; if not, see |
29 | <http://www.gnu.org/licenses/>. */ | |
d876f532 UD |
30 | |
31 | #include "soft-fp.h" | |
32 | #include "single.h" | |
33 | #include "quad.h" | |
34 | ||
1e145589 | 35 | SFtype |
51ca9e29 | 36 | __trunctfsf2 (TFtype a) |
d876f532 UD |
37 | { |
38 | FP_DECL_EX; | |
51ca9e29 JM |
39 | FP_DECL_Q (A); |
40 | FP_DECL_S (R); | |
fe0b1e85 | 41 | SFtype r; |
d876f532 UD |
42 | |
43 | FP_INIT_ROUNDMODE; | |
51ca9e29 | 44 | FP_UNPACK_SEMIRAW_Q (A, a); |
d876f532 | 45 | #if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q |
51ca9e29 | 46 | FP_TRUNC (S, Q, 1, 4, R, A); |
d876f532 | 47 | #else |
51ca9e29 | 48 | FP_TRUNC (S, Q, 1, 2, R, A); |
d876f532 | 49 | #endif |
51ca9e29 | 50 | FP_PACK_SEMIRAW_S (r, R); |
d876f532 UD |
51 | FP_HANDLE_EXCEPTIONS; |
52 | ||
53 | return r; | |
54 | } |