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.Dd October 17, 2011 26.Dt CCOS 3 27.Os 28.Sh NAME 29.Nm ccos , 30.Nm ccosf , 31.Nm csin , 32.Nm csinf , 33.Nm ctan , 34.Nm ctanf 35.Nd complex trigonometric functions 36.Sh LIBRARY 37.Lb libm 38.Sh SYNOPSIS 39.In complex.h 40.Ft double complex 41.Fn ccos "double complex z" 42.Ft float complex 43.Fn ccosf "float complex z" 44.Ft double complex 45.Fn csin "double complex z" 46.Ft float complex 47.Fn csinf "float complex z" 48.Ft double complex 49.Fn ctan "double complex z" 50.Ft float complex 51.Fn ctanf "float complex z" 52.Sh DESCRIPTION 53The 54.Fn ccos , 55.Fn csin , 56and 57.Fn ctan 58functions compute the cosine, sine, and tangent of the complex number 59.Fa z , 60respectively. 61The 62.Fn ccosf , 63.Fn csinf , 64and 65.Fn ctanf 66functions perform the same operations in 67.Fa float 68precision. 69.Sh SEE ALSO 70.Xr cacos 3 , 71.Xr ccosh 3 , 72.Xr complex 3 , 73.Xr cos 3 , 74.Xr math 3 , 75.Xr sin 3 , 76.Xr tan 3 77.Sh STANDARDS 78These functions conform to 79.St -isoC-99 . 80