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01ee3870 | 1 | /* Return cosine of complex float type. |
2b778ceb | 2 | Copyright (C) 1997-2021 Free Software Foundation, Inc. |
281f5073 PM |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
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 | |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
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19 | |
20 | #include <complex.h> | |
21 | #include <fenv.h> | |
22 | #include <math.h> | |
281f5073 | 23 | |
01ee3870 PM |
24 | CFLOAT |
25 | M_DECL_FUNC (__ccos) (CFLOAT x) | |
281f5073 | 26 | { |
01ee3870 | 27 | CFLOAT y; |
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28 | |
29 | __real__ y = -__imag__ x; | |
30 | __imag__ y = __real__ x; | |
31 | ||
01ee3870 | 32 | return M_SUF (__ccosh) (y); |
281f5073 | 33 | } |
01ee3870 PM |
34 | |
35 | declare_mgen_alias (__ccos, ccos); |