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84c54b39 | 1 | /* Return nonzero value if number is negative. |
2b778ceb | 2 | Copyright (C) 1997-2021 Free Software Foundation, Inc. |
84c54b39 | 3 | This file is part of the GNU C Library. |
84c54b39 CD |
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 | |
ab84e3ff | 16 | License along with the GNU C Library. If not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
84c54b39 CD |
18 | |
19 | #include <math.h> | |
20 | ||
e038d690 | 21 | #include <math_private.h> |
84c54b39 CD |
22 | |
23 | int | |
24 | __signbit (double x) | |
25 | { | |
26 | int32_t hx; | |
27 | ||
28 | GET_HIGH_WORD (hx, x); | |
29 | return hx & 0x80000000; | |
30 | } | |
31 | #ifdef NO_LONG_DOUBLE | |
32 | strong_alias (__signbit, __signbitl) | |
33 | #endif |