13a8617a8SJordan K. Hubbard.\" Copyright (c) 1991 The Regents of the University of California. 23a8617a8SJordan K. Hubbard.\" All rights reserved. 33a8617a8SJordan K. Hubbard.\" 43a8617a8SJordan K. Hubbard.\" Redistribution and use in source and binary forms, with or without 53a8617a8SJordan K. Hubbard.\" modification, are permitted provided that the following conditions 63a8617a8SJordan K. Hubbard.\" are met: 73a8617a8SJordan K. Hubbard.\" 1. Redistributions of source code must retain the above copyright 83a8617a8SJordan K. Hubbard.\" notice, this list of conditions and the following disclaimer. 93a8617a8SJordan K. Hubbard.\" 2. Redistributions in binary form must reproduce the above copyright 103a8617a8SJordan K. Hubbard.\" notice, this list of conditions and the following disclaimer in the 113a8617a8SJordan K. Hubbard.\" documentation and/or other materials provided with the distribution. 123a8617a8SJordan K. Hubbard.\" 4. Neither the name of the University nor the names of its contributors 133a8617a8SJordan K. Hubbard.\" may be used to endorse or promote products derived from this software 143a8617a8SJordan K. Hubbard.\" without specific prior written permission. 153a8617a8SJordan K. Hubbard.\" 163a8617a8SJordan K. Hubbard.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 173a8617a8SJordan K. Hubbard.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 183a8617a8SJordan K. Hubbard.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 193a8617a8SJordan K. Hubbard.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 203a8617a8SJordan K. Hubbard.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 213a8617a8SJordan K. Hubbard.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 223a8617a8SJordan K. Hubbard.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 233a8617a8SJordan K. Hubbard.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 243a8617a8SJordan K. Hubbard.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 253a8617a8SJordan K. Hubbard.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 263a8617a8SJordan K. Hubbard.\" SUCH DAMAGE. 273a8617a8SJordan K. Hubbard.\" 283a8617a8SJordan K. Hubbard.\" from: @(#)cos.3 5.1 (Berkeley) 5/2/91 297f3dea24SPeter Wemm.\" $FreeBSD$ 303a8617a8SJordan K. Hubbard.\" 31f869a8c5SDavid Schultz.Dd January 24, 2008 323a8617a8SJordan K. Hubbard.Dt COS 3 333a8617a8SJordan K. Hubbard.Os 343a8617a8SJordan K. Hubbard.Sh NAME 357a15a32aSJordan K. Hubbard.Nm cos , 36f869a8c5SDavid Schultz.Nm cosf , 37f869a8c5SDavid Schultz.Nm cosl 387a15a32aSJordan K. Hubbard.Nd cosine functions 3964890443SBruce Evans.Sh LIBRARY 4064890443SBruce Evans.Lb libm 413a8617a8SJordan K. Hubbard.Sh SYNOPSIS 4232eef9aeSRuslan Ermilov.In math.h 433a8617a8SJordan K. Hubbard.Ft double 443a8617a8SJordan K. Hubbard.Fn cos "double x" 457a15a32aSJordan K. Hubbard.Ft float 462d2781ffSBruce Evans.Fn cosf "float x" 47f869a8c5SDavid Schultz.Fn long double 48f869a8c5SDavid Schultz.Ft cosl "long double x" 493a8617a8SJordan K. Hubbard.Sh DESCRIPTION 503a8617a8SJordan K. HubbardThe 51f869a8c5SDavid Schultz.Fn cos , 52f869a8c5SDavid Schultz.Fn cosf , 53f869a8c5SDavid Schultzand 54f869a8c5SDavid Schultz.Fn cosl 557a15a32aSJordan K. Hubbardfunctions compute the cosine of 563a8617a8SJordan K. Hubbard.Fa x 573a8617a8SJordan K. Hubbard(measured in radians). 583a8617a8SJordan K. HubbardA large magnitude argument may yield a result with little or no 593a8617a8SJordan K. Hubbardsignificance. 603a8617a8SJordan K. HubbardFor a discussion of error due to roundoff, see 613a8617a8SJordan K. Hubbard.Xr math 3 . 623a8617a8SJordan K. Hubbard.Sh RETURN VALUES 633a8617a8SJordan K. HubbardThe 64f869a8c5SDavid Schultz.Fn cos , 65f869a8c5SDavid Schultz.Fn cosf , 66f869a8c5SDavid Schultzand 67f869a8c5SDavid Schultz.Fn cosl 687a15a32aSJordan K. Hubbardfunctions return the cosine value. 693a8617a8SJordan K. Hubbard.Sh SEE ALSO 703a8617a8SJordan K. Hubbard.Xr acos 3 , 7175141cc9SWolfram Schneider.Xr asin 3 , 723a8617a8SJordan K. Hubbard.Xr atan 3 , 733a8617a8SJordan K. Hubbard.Xr atan2 3 , 743a8617a8SJordan K. Hubbard.Xr cosh 3 , 7575141cc9SWolfram Schneider.Xr math 3 , 7675141cc9SWolfram Schneider.Xr sin 3 , 7775141cc9SWolfram Schneider.Xr sinh 3 , 7875141cc9SWolfram Schneider.Xr tan 3 , 7975141cc9SWolfram Schneider.Xr tanh 3 803a8617a8SJordan K. Hubbard.Sh STANDARDS 81f869a8c5SDavid SchultzThese functions conform to 82f869a8c5SDavid Schultz.St -isoC-99 . 83