1/* Return cosine of complex float type.
2 Copyright (C) 1997-2024 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 <complex.h>
20#include <fenv.h>
21#include <math.h>
22
23CFLOAT
24M_DECL_FUNC (__ccos) (CFLOAT x)
25{
26 CFLOAT y;
27
28 __real__ y = -__imag__ x;
29 __imag__ y = __real__ x;
30
31 return M_SUF (__ccosh) (y);
32}
33
34declare_mgen_alias (__ccos, ccos);
35

source code of glibc/math/s_ccos_template.c