ipiq: Add simple IPI latency measure sysctls (2)
[dragonfly.git] / lib / libm / man / cos.3
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1.\" Copyright (c) 1991 The Regents of the University of California.
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28.\" from: @(#)cos.3 5.1 (Berkeley) 5/2/91
6ff43c94 29.\" $FreeBSD: head/lib/msun/man/cos.3 226458 2011-10-17 05:41:03Z das $
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8cecb502 31.Dd December 21, 2011
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32.Dt COS 3
33.Os
34.Sh NAME
35.Nm cos ,
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36.Nm cosf ,
37.Nm cosl
38.Nd cosine functions
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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"
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47.Ft long double
48.Fn cosl "long double x"
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49.Sh DESCRIPTION
50The
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51.Fn cos ,
52.Fn cosf ,
b34b60bc 53and
8cecb502 54.Fn cosl
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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
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64.Fn cos ,
65.Fn cosf ,
66and
67.Fn cosl
68functions return the cosine value.
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69.Sh SEE ALSO
70.Xr acos 3 ,
71.Xr asin 3 ,
72.Xr atan 3 ,
73.Xr atan2 3 ,
8cecb502 74.Xr ccos 3 ,
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75.Xr cosh 3 ,
76.Xr math 3 ,
77.Xr sin 3 ,
78.Xr sinh 3 ,
79.Xr tan 3 ,
80.Xr tanh 3
81.Sh STANDARDS
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82These functions conform to
83.St -isoC-99 .