| .\" Copyright (c) 1991 The Regents of the University of California. |
| .\" All rights reserved. |
| .\" |
| .\" Redistribution and use in source and binary forms, with or without |
| .\" modification, are permitted provided that the following conditions |
| .\" are met: |
| .\" 1. Redistributions of source code must retain the above copyright |
| .\" notice, this list of conditions and the following disclaimer. |
| .\" 2. Redistributions in binary form must reproduce the above copyright |
| .\" notice, this list of conditions and the following disclaimer in the |
| .\" documentation and/or other materials provided with the distribution. |
| .\" 3. All advertising materials mentioning features or use of this software |
| .\" must display the following acknowledgement: |
| .\" This product includes software developed by the University of |
| .\" California, Berkeley and its contributors. |
| .\" 4. Neither the name of the University nor the names of its contributors |
| .\" may be used to endorse or promote products derived from this software |
| .\" without specific prior written permission. |
| .\" |
| .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| .\" SUCH DAMAGE. |
| .\" |
| .\" from: @(#)ceil.3 5.1 (Berkeley) 5/2/91 |
| .\" $FreeBSD: src/lib/msun/man/ceil.3,v 1.15 2005/01/13 20:33:42 stefanf Exp $ |
| .\" |
| .Dd January 13, 2005 |
| .Dt CEIL 3 |
| .Os |
| .Sh NAME |
| .Nm ceil , |
| .Nm ceilf , |
| .Nm ceill |
| .Nd smallest integral value greater than or equal to x |
| .Sh LIBRARY |
| .Lb libm |
| .Sh SYNOPSIS |
| .In math.h |
| .Ft double |
| .Fn ceil "double x" |
| .Ft float |
| .Fn ceilf "float x" |
| .Ft "long double" |
| .Fn ceill "long double x" |
| .Sh DESCRIPTION |
| The |
| .Fn ceil , |
| .Fn ceilf |
| and |
| .Fn ceill |
| functions return the smallest integral value |
| greater than or equal to |
| .Fa x , |
| expressed as a floating-point number. |
| .Sh SEE ALSO |
| .Xr abs 3 , |
| .Xr fabs 3 , |
| .Xr floor 3 , |
| .Xr ieee 3 , |
| .Xr math 3 , |
| .Xr rint 3 , |
| .Xr round 3 , |
| .Xr trunc 3 |
| .Sh STANDARDS |
| The |
| .Fn ceil |
| function conforms to |
| .St -isoC . |
| The |
| .Fn ceilf |
| and |
| .Fn ceill |
| functions conform to |
| .St -isoC-99 . |