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32.\" from: @(#)floor.3 6.5 (Berkeley) 4/19/91
33.\" $Id: floor.3,v 1.4 2004/12/20 21:35:45 scp Exp $
34.\"
35.Dd December 11, 2006
36.Dt FLOOR 3
37.Os
38.Sh NAME
39.Nm floor
40.Nd round to largest integral value not greater than x
41.Sh SYNOPSIS
42.Fd #include <math.h>
43.Ft double
44.Fn floor "double x"
45.Ft long double
46.Fn floorl "long double x"
47.Ft float
48.Fn floorf "float x"
49.Sh DESCRIPTION
50The
51.Fn floor
52functions return the largest integral value
53less than or equal to
54.Fa x .
55.Sh SPECIAL VALUES
56.Fn floor "�0"
57returns �0.
58.Pp
59.Fn floor "�infinity"
60returns �infinity.
61.Sh SEE ALSO
62.Xr abs 3 ,
63.Xr ceil 3 ,
64.Xr fabs 3 ,
65.Xr rint 3 ,
66.Xr math 3
67.Sh STANDARDS
68The
69.Fn floor
70functions conform to ISO/IEC 9899:1999(E).