trunc.3 (7ffaea80214760846ec28f383577ac7ba546921a) trunc.3 (2f2ee27de4367161d0f6e3913c5921f0d002fd98)
1.\" Copyright (c) 2004 David Schultz <das@FreeBSD.org>
1.\" Copyright (c) 2004, 2005 David Schultz <das@FreeBSD.org>
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3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
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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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25.\" $FreeBSD$
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2.\" All rights reserved.
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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.\" $FreeBSD$
26.\"
27.Dd June 20, 2004
27.Dd April 16, 2005
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
32.Nm truncf ,
33.Nm truncl
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"
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"
43.Ft long double
44.Fn truncl "long double x"
42.Sh DESCRIPTION
43The
45.Sh DESCRIPTION
46The
44.Fn trunc
47.Fn trunc ,
48.Fn truncf ,
45and
49and
46.Fn truncf
50.Fn truncl
47functions return the nearest integral value with magnitude less than
48or equal to
49.Pf | Fa x Ns | .
50They are equivalent to
51functions return the nearest integral value with magnitude less than
52or equal to
53.Pf | Fa x Ns | .
54They are equivalent to
51.Fn rint
52and
55.Fn rint ,
53.Fn rintf ,
56.Fn rintf ,
57and
58.Fn rintl ,
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
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
67.Fn trunc
72.Fn trunc ,
73.Fn truncf ,
68and
74and
69.Fn truncf
75.Fn truncl
70functions conform to
71.St -isoC-99 .
72.Sh HISTORY
73These routines first appeared in
74.Fx 5.3 .
76functions conform to
77.St -isoC-99 .
78.Sh HISTORY
79These routines first appeared in
80.Fx 5.3 .