1.\" Copyright (c) 1991 The Regents of the University of California.
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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)
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32.\" from: @(#)ceil.3 5.1 (Berkeley) 5/2/91
33.\" $FreeBSD: head/lib/msun/man/ceil.3 130770 2004-06-20 09:27:17Z das $
34.\"
35.Dd March 10, 1994
36.Dt CEIL 3
37.Os
38.Sh NAME
39.Nm ceil ,
40.Nm ceilf
41.Nd smallest integral value greater than or equal to x
42.Sh LIBRARY
43.Lb libm
44.Sh SYNOPSIS
45.In math.h
46.Ft double
47.Fn ceil "double x"
48.Ft float
49.Fn ceilf "float x"
50.Sh DESCRIPTION
51The
52.Fn ceil
53and the
54.Fn ceilf
55functions return the smallest integral value
56greater than or equal to
57.Fa x ,
58expressed as a floating-point number.
59.Sh SEE ALSO
60.Xr abs 3 ,
61.Xr fabs 3 ,
62.Xr floor 3 ,
63.Xr ieee 3 ,
64.Xr math 3 ,
65.Xr rint 3 ,
66.Xr round 3 ,
67.Xr trunc 3
68.Sh STANDARDS
69The
70.Fn ceil
71function conforms to
72.St -isoC .