1.\" Copyright (c) 2011 David Schultz <das@FreeBSD.org> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd October 17, 2011 28.Dt CCOS 3 29.Os 30.Sh NAME 31.Nm ccos , 32.Nm ccosf , 33.Nm csin , 34.Nm csinf , 35.Nm ctan , 36.Nm ctanf 37.Nd complex trigonometric functions 38.Sh LIBRARY 39.Lb libm 40.Sh SYNOPSIS 41.In complex.h 42.Ft double complex 43.Fn ccos "double complex z" 44.Ft float complex 45.Fn ccosf "float complex z" 46.Ft double complex 47.Fn csin "double complex z" 48.Ft float complex 49.Fn csinf "float complex z" 50.Ft double complex 51.Fn ctan "double complex z" 52.Ft float complex 53.Fn ctanf "float complex z" 54.Sh DESCRIPTION 55The 56.Fn ccos , 57.Fn csin , 58and 59.Fn ctan 60functions compute the cosine, sine, and tangent of the complex number 61.Fa z , 62respectively. 63The 64.Fn ccosf , 65.Fn csinf , 66and 67.Fn ctanf 68functions perform the same operations in 69.Fa float 70precision. 71.Sh SEE ALSO 72.Xr cacos 3 , 73.Xr ccosh 3 , 74.Xr complex 3 , 75.Xr cos 3 , 76.Xr math 3 , 77.Xr sin 3 , 78.Xr tan 3 79.Sh STANDARDS 80These functions conform to 81.St -isoC-99 . 82