1*2fe8fb19SBen Gras.\" Copyright (c) 1991 The Regents of the University of California. 2*2fe8fb19SBen Gras.\" All rights reserved. 3*2fe8fb19SBen Gras.\" 4*2fe8fb19SBen Gras.\" Redistribution and use in source and binary forms, with or without 5*2fe8fb19SBen Gras.\" modification, are permitted provided that the following conditions 6*2fe8fb19SBen Gras.\" are met: 7*2fe8fb19SBen Gras.\" 1. Redistributions of source code must retain the above copyright 8*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer. 9*2fe8fb19SBen Gras.\" 2. Redistributions in binary form must reproduce the above copyright 10*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer in the 11*2fe8fb19SBen Gras.\" documentation and/or other materials provided with the distribution. 12*2fe8fb19SBen Gras.\" 3. Neither the name of the University nor the names of its contributors 13*2fe8fb19SBen Gras.\" may be used to endorse or promote products derived from this software 14*2fe8fb19SBen Gras.\" without specific prior written permission. 15*2fe8fb19SBen Gras.\" 16*2fe8fb19SBen Gras.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17*2fe8fb19SBen Gras.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*2fe8fb19SBen Gras.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*2fe8fb19SBen Gras.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20*2fe8fb19SBen Gras.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*2fe8fb19SBen Gras.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*2fe8fb19SBen Gras.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*2fe8fb19SBen Gras.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*2fe8fb19SBen Gras.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*2fe8fb19SBen Gras.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*2fe8fb19SBen Gras.\" SUCH DAMAGE. 27*2fe8fb19SBen Gras.\" 28*2fe8fb19SBen Gras.\" from: @(#)cos.3 5.1 (Berkeley) 5/2/91 29*2fe8fb19SBen Gras.\" $NetBSD: cos.3,v 1.15 2003/08/07 16:44:47 agc Exp $ 30*2fe8fb19SBen Gras.\" 31*2fe8fb19SBen Gras.Dd May 2, 1991 32*2fe8fb19SBen Gras.Dt COS 3 33*2fe8fb19SBen Gras.Os 34*2fe8fb19SBen Gras.Sh NAME 35*2fe8fb19SBen Gras.Nm cos , 36*2fe8fb19SBen Gras.Nm cosf 37*2fe8fb19SBen Gras.Nd cosine function 38*2fe8fb19SBen Gras.Sh LIBRARY 39*2fe8fb19SBen Gras.Lb libm 40*2fe8fb19SBen Gras.Sh SYNOPSIS 41*2fe8fb19SBen Gras.In math.h 42*2fe8fb19SBen Gras.Ft double 43*2fe8fb19SBen Gras.Fn cos "double x" 44*2fe8fb19SBen Gras.Ft float 45*2fe8fb19SBen Gras.Fn cosf "float x" 46*2fe8fb19SBen Gras.Sh DESCRIPTION 47*2fe8fb19SBen GrasThe 48*2fe8fb19SBen Gras.Fn cos 49*2fe8fb19SBen Grasand 50*2fe8fb19SBen Gras.Fn cosf 51*2fe8fb19SBen Grasfunctions compute the cosine of 52*2fe8fb19SBen Gras.Fa x 53*2fe8fb19SBen Gras(measured in radians). 54*2fe8fb19SBen GrasA large magnitude argument may yield a result with little or no 55*2fe8fb19SBen Grassignificance. 56*2fe8fb19SBen GrasFor a discussion of error due to roundoff, see 57*2fe8fb19SBen Gras.Xr math 3 . 58*2fe8fb19SBen Gras.Sh RETURN VALUES 59*2fe8fb19SBen GrasThe 60*2fe8fb19SBen Gras.Fn cos 61*2fe8fb19SBen Grasfunction returns the cosine value. 62*2fe8fb19SBen Gras.Sh SEE ALSO 63*2fe8fb19SBen Gras.Xr acos 3 , 64*2fe8fb19SBen Gras.Xr asin 3 , 65*2fe8fb19SBen Gras.Xr atan 3 , 66*2fe8fb19SBen Gras.Xr atan2 3 , 67*2fe8fb19SBen Gras.Xr cosh 3 , 68*2fe8fb19SBen Gras.Xr math 3 , 69*2fe8fb19SBen Gras.Xr sin 3 , 70*2fe8fb19SBen Gras.Xr sinh 3 , 71*2fe8fb19SBen Gras.Xr tan 3 , 72*2fe8fb19SBen Gras.Xr tanh 3 73*2fe8fb19SBen Gras.Sh STANDARDS 74*2fe8fb19SBen GrasThe 75*2fe8fb19SBen Gras.Fn cos 76*2fe8fb19SBen Grasfunction conforms to 77*2fe8fb19SBen Gras.St -ansiC . 78