1 | /* Add long double (ldbl-128) values, narrowing the result to float, |
2 | using soft-fp. |
3 | Copyright (C) 2018-2022 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 | #define f32addf64x __hide_f32addf64x |
21 | #define f32addf128 __hide_f32addf128 |
22 | #include <math.h> |
23 | #undef f32addf64x |
24 | #undef f32addf128 |
25 | |
26 | #include <math-narrow.h> |
27 | #include <soft-fp.h> |
28 | #include <single.h> |
29 | #include <quad.h> |
30 | |
31 | float |
32 | __faddl (_Float128 x, _Float128 y) |
33 | { |
34 | FP_DECL_EX; |
35 | FP_DECL_Q (X); |
36 | FP_DECL_Q (Y); |
37 | FP_DECL_Q (R); |
38 | FP_DECL_S (RN); |
39 | float ret; |
40 | |
41 | FP_INIT_ROUNDMODE; |
42 | FP_UNPACK_SEMIRAW_Q (X, x); |
43 | FP_UNPACK_SEMIRAW_Q (Y, y); |
44 | FP_ADD_Q (R, X, Y); |
45 | #if _FP_W_TYPE_SIZE < 64 |
46 | FP_TRUNC (S, Q, 1, 4, RN, R); |
47 | #else |
48 | FP_TRUNC (S, Q, 1, 2, RN, R); |
49 | #endif |
50 | FP_PACK_SEMIRAW_S (ret, RN); |
51 | FP_HANDLE_EXCEPTIONS; |
52 | CHECK_NARROW_ADD (ret, x, y); |
53 | return ret; |
54 | } |
55 | libm_alias_float_ldouble (add) |
56 | |