| /* Return nonzero value if number is negative. |
| Copyright (C) 2017-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <float128_private.h> |
| #include <math.h> |
| #include <math_private.h> |
| |
| /* Once GCC >= 6.0 is required for building glibc, this implementation can |
| be removed and replaced with an inclusion of ldbl-128/s_signbitl.c. */ |
| int |
| __signbitf128 (_Float128 x) |
| { |
| #if __GNUC_PREREQ (6, 0) |
| return __builtin_signbit (x); |
| #else |
| int64_t e; |
| |
| GET_FLOAT128_MSW64 (e, x); |
| return e < 0; |
| #endif |
| } |
| hidden_def (__signbitf128) |
