1*5acbf1f5SJérôme Duval /* Return cosine of complex long double value.
2*5acbf1f5SJérôme Duval Copyright (C) 1997, 1998 Free Software Foundation, Inc.
3*5acbf1f5SJérôme Duval This file is part of the GNU C Library.
4*5acbf1f5SJérôme Duval Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
5*5acbf1f5SJérôme Duval
6*5acbf1f5SJérôme Duval The GNU C Library is free software; you can redistribute it and/or
7*5acbf1f5SJérôme Duval modify it under the terms of the GNU Lesser General Public
8*5acbf1f5SJérôme Duval License as published by the Free Software Foundation; either
9*5acbf1f5SJérôme Duval version 2.1 of the License, or (at your option) any later version.
10*5acbf1f5SJérôme Duval
11*5acbf1f5SJérôme Duval The GNU C Library is distributed in the hope that it will be useful,
12*5acbf1f5SJérôme Duval but WITHOUT ANY WARRANTY; without even the implied warranty of
13*5acbf1f5SJérôme Duval MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14*5acbf1f5SJérôme Duval Lesser General Public License for more details.
15*5acbf1f5SJérôme Duval
16*5acbf1f5SJérôme Duval You should have received a copy of the GNU Lesser General Public
17*5acbf1f5SJérôme Duval License along with the GNU C Library; if not, write to the Free
18*5acbf1f5SJérôme Duval Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19*5acbf1f5SJérôme Duval 02111-1307 USA. */
20*5acbf1f5SJérôme Duval
21*5acbf1f5SJérôme Duval #include <complex.h>
22*5acbf1f5SJérôme Duval #include <math.h>
23*5acbf1f5SJérôme Duval
24*5acbf1f5SJérôme Duval __complex__ long double
__cacosl(__complex__ long double x)25*5acbf1f5SJérôme Duval __cacosl (__complex__ long double x)
26*5acbf1f5SJérôme Duval {
27*5acbf1f5SJérôme Duval __complex__ long double y;
28*5acbf1f5SJérôme Duval __complex__ long double res;
29*5acbf1f5SJérôme Duval
30*5acbf1f5SJérôme Duval y = __casinl (x);
31*5acbf1f5SJérôme Duval
32*5acbf1f5SJérôme Duval __real__ res = M_PI_2l - __real__ y;
33*5acbf1f5SJérôme Duval __imag__ res = -__imag__ y;
34*5acbf1f5SJérôme Duval
35*5acbf1f5SJérôme Duval return res;
36*5acbf1f5SJérôme Duval }
37*5acbf1f5SJérôme Duval weak_alias (__cacosl, cacosl)
38