cos.3 (3a8617a83f16ffc9db4f96e1f0f21af94078e6b1) cos.3 (7a15a32a17f4c2cbeb6f842c4c6b1cf93e4639e7)
1.\" Copyright (c) 1991 The Regents of the University of California.
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.

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25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30.\" SUCH DAMAGE.
31.\"
32.\" from: @(#)cos.3 5.1 (Berkeley) 5/2/91
1.\" Copyright (c) 1991 The Regents of the University of California.
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.

--- 16 unchanged lines hidden (view full) ---

25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30.\" SUCH DAMAGE.
31.\"
32.\" from: @(#)cos.3 5.1 (Berkeley) 5/2/91
33.\" $Id: cos.3,v 1.5 1993/10/29 22:57:25 jtc Exp $
33.\" $Id: cos.3,v 1.1.1.1 1994/08/19 09:39:42 jkh Exp $
34.\"
35.Dd May 2, 1991
36.Dt COS 3
37.Os
38.Sh NAME
34.\"
35.Dd May 2, 1991
36.Dt COS 3
37.Os
38.Sh NAME
39.Nm cos
40.Nd cosine function
39.Nm cos ,
40.Nm cosf
41.Nd cosine functions
41.Sh SYNOPSIS
42.Fd #include <math.h>
43.Ft double
44.Fn cos "double x"
42.Sh SYNOPSIS
43.Fd #include <math.h>
44.Ft double
45.Fn cos "double x"
46.Ft float
47.Fn cos "float x"
45.Sh DESCRIPTION
46The
47.Fn cos
48.Sh DESCRIPTION
49The
50.Fn cos
48function computes the cosine of
51and the
52.Fn cosf
53functions compute the cosine of
49.Fa x
50(measured in radians).
51A large magnitude argument may yield a result with little or no
52significance.
53For a discussion of error due to roundoff, see
54.Xr math 3 .
55.Sh RETURN VALUES
56The
57.Fn cos
54.Fa x
55(measured in radians).
56A large magnitude argument may yield a result with little or no
57significance.
58For a discussion of error due to roundoff, see
59.Xr math 3 .
60.Sh RETURN VALUES
61The
62.Fn cos
58function returns the cosine value.
63and the
64.Fn cosf
65functions return the cosine value.
59.Sh SEE ALSO
60.Xr sin 3 ,
61.Xr tan 3 ,
62.Xr asin 3 ,
63.Xr acos 3 ,
64.Xr atan 3 ,
65.Xr atan2 3 ,
66.Xr sinh 3 ,
67.Xr cosh 3 ,
68.Xr tanh 3 ,
69.Xr math 3
70.Sh STANDARDS
71The
72.Fn cos
73function conforms to
74.St -ansiC .
66.Sh SEE ALSO
67.Xr sin 3 ,
68.Xr tan 3 ,
69.Xr asin 3 ,
70.Xr acos 3 ,
71.Xr atan 3 ,
72.Xr atan2 3 ,
73.Xr sinh 3 ,
74.Xr cosh 3 ,
75.Xr tanh 3 ,
76.Xr math 3
77.Sh STANDARDS
78The
79.Fn cos
80function conforms to
81.St -ansiC .