trunc.3 (f789cb829380f2501402d11904f10adf363f7da5) trunc.3 (7ffaea80214760846ec28f383577ac7ba546921a)
1.\" Copyright (c) 2004, 2005 David Schultz <das@FreeBSD.org>
1.\" Copyright (c) 2004 David Schultz <das@FreeBSD.org>
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5.\" modification, are permitted provided that the following conditions
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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.
9.\" 2. Redistributions in binary form must reproduce the above copyright

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19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23.\" SUCH DAMAGE.
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25.\" $FreeBSD$
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27.Dd April 16, 2005
27.Dd June 20, 2004
28.Dt TRUNC 3
29.Os
30.Sh NAME
31.Nm trunc ,
28.Dt TRUNC 3
29.Os
30.Sh NAME
31.Nm trunc ,
32.Nm truncf ,
33.Nm truncl
32.Nm truncf
34.Nd nearest integral value with magnitude less than or equal to |x|
35.Sh LIBRARY
36.Lb libm
37.Sh SYNOPSIS
38.In math.h
39.Ft double
40.Fn trunc "double x"
41.Ft float
42.Fn truncf "float x"
33.Nd nearest integral value with magnitude less than or equal to |x|
34.Sh LIBRARY
35.Lb libm
36.Sh SYNOPSIS
37.In math.h
38.Ft double
39.Fn trunc "double x"
40.Ft float
41.Fn truncf "float x"
43.Ft "long double"
44.Fn truncl "long double x"
45.Sh DESCRIPTION
46The
42.Sh DESCRIPTION
43The
47.Fn trunc ,
48.Fn truncf ,
44.Fn trunc
49and
45and
50.Fn truncl
46.Fn truncf
51functions return the nearest integral value with magnitude less than
52or equal to
53.Pf | Fa x Ns | .
54They are equivalent to
47functions return the nearest integral value with magnitude less than
48or equal to
49.Pf | Fa x Ns | .
50They are equivalent to
55.Fn rint ,
56.Fn rintf ,
51.Fn rint
57and
52and
58.Fn rintl ,
53.Fn rintf ,
59respectively, in the
60.Dv FE_TOWARDZERO
61rounding mode.
62.Sh SEE ALSO
63.Xr ceil 3 ,
64.Xr fesetround 3 ,
65.Xr floor 3 ,
66.Xr math 3 ,
67.Xr nextafter 3 ,
68.Xr rint 3 ,
69.Xr round 3
70.Sh STANDARDS
71The
54respectively, in the
55.Dv FE_TOWARDZERO
56rounding mode.
57.Sh SEE ALSO
58.Xr ceil 3 ,
59.Xr fesetround 3 ,
60.Xr floor 3 ,
61.Xr math 3 ,
62.Xr nextafter 3 ,
63.Xr rint 3 ,
64.Xr round 3
65.Sh STANDARDS
66The
72.Fn trunc ,
73.Fn truncf ,
67.Fn trunc
74and
68and
75.Fn truncl
69.Fn truncf
76functions conform to
77.St -isoC-99 .
78.Sh HISTORY
79These routines first appeared in
80.Fx 5.3 .
70functions conform to
71.St -isoC-99 .
72.Sh HISTORY
73These routines first appeared in
74.Fx 5.3 .