cos.3 (ee7093a6400feef3d8a99579f28577817d70f6ad) cos.3 (f869a8c5f3dbca90e9b4ed07e45ca8f52080461e)
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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23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26.\" SUCH DAMAGE.
27.\"
28.\" from: @(#)cos.3 5.1 (Berkeley) 5/2/91
29.\" $FreeBSD$
30.\"
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.

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

23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26.\" SUCH DAMAGE.
27.\"
28.\" from: @(#)cos.3 5.1 (Berkeley) 5/2/91
29.\" $FreeBSD$
30.\"
31.Dd May 2, 1991
31.Dd January 24, 2008
32.Dt COS 3
33.Os
34.Sh NAME
35.Nm cos ,
32.Dt COS 3
33.Os
34.Sh NAME
35.Nm cos ,
36.Nm cosf
36.Nm cosf ,
37.Nm cosl
37.Nd cosine functions
38.Sh LIBRARY
39.Lb libm
40.Sh SYNOPSIS
41.In math.h
42.Ft double
43.Fn cos "double x"
44.Ft float
45.Fn cosf "float x"
38.Nd cosine functions
39.Sh LIBRARY
40.Lb libm
41.Sh SYNOPSIS
42.In math.h
43.Ft double
44.Fn cos "double x"
45.Ft float
46.Fn cosf "float x"
47.Fn long double
48.Ft cosl "long double x"
46.Sh DESCRIPTION
47The
49.Sh DESCRIPTION
50The
48.Fn cos
49and the
50.Fn cosf
51.Fn cos ,
52.Fn cosf ,
53and
54.Fn cosl
51functions compute the cosine of
52.Fa x
53(measured in radians).
54A large magnitude argument may yield a result with little or no
55significance.
56For a discussion of error due to roundoff, see
57.Xr math 3 .
58.Sh RETURN VALUES
59The
55functions compute the cosine of
56.Fa x
57(measured in radians).
58A large magnitude argument may yield a result with little or no
59significance.
60For a discussion of error due to roundoff, see
61.Xr math 3 .
62.Sh RETURN VALUES
63The
60.Fn cos
61and the
62.Fn cosf
64.Fn cos ,
65.Fn cosf ,
66and
67.Fn cosl
63functions return the cosine value.
64.Sh SEE ALSO
65.Xr acos 3 ,
66.Xr asin 3 ,
67.Xr atan 3 ,
68.Xr atan2 3 ,
69.Xr cosh 3 ,
70.Xr math 3 ,
71.Xr sin 3 ,
72.Xr sinh 3 ,
73.Xr tan 3 ,
74.Xr tanh 3
75.Sh STANDARDS
68functions return the cosine value.
69.Sh SEE ALSO
70.Xr acos 3 ,
71.Xr asin 3 ,
72.Xr atan 3 ,
73.Xr atan2 3 ,
74.Xr cosh 3 ,
75.Xr math 3 ,
76.Xr sin 3 ,
77.Xr sinh 3 ,
78.Xr tan 3 ,
79.Xr tanh 3
80.Sh STANDARDS
76The
77.Fn cos
78function conforms to
79.St -isoC .
81These functions conform to
82.St -isoC-99 .