1 | /* Return maximum numeric value of X and Y. |
2 | Copyright (C) 1997-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <math.h> |
20 | #include <math-use-builtins.h> |
21 | |
22 | FLOAT |
23 | M_DECL_FUNC (__fmax) (FLOAT x, FLOAT y) |
24 | { |
25 | #if M_USE_BUILTIN (FMAX) |
26 | return M_SUF (__builtin_fmax) (x, y); |
27 | #else |
28 | if (isgreaterequal (x, y)) |
29 | return x; |
30 | else if (isless (x, y)) |
31 | return y; |
32 | else if (issignaling (x) || issignaling (y)) |
33 | return x + y; |
34 | else |
35 | return isnan (y) ? x : y; |
36 | #endif |
37 | } |
38 | |
39 | declare_mgen_alias (__fmax, fmax); |
40 | |