xref: /freebsd/lib/msun/man/floor.3 (revision dc36d6f9bb1753f3808552f3afd30eda9a7b206a)

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.Dd April 3, 2022
.Dt FLOOR 3
.Os
.Sh NAME
.Nm floor ,
.Nm floorf ,
.Nm floorl
.Nd largest integral value less than or equal to x
.Sh LIBRARY
.Lb libm
.Sh SYNOPSIS
.In math.h
.Ft double
.Fn floor "double x"
.Ft float
.Fn floorf "float x"
.Ft "long double"
.Fn floorl "long double x"
.Sh DESCRIPTION
The
.Fn floor ,
.Fn floorf
and
.Fn floorl
functions return the largest integral value
less than or equal to
.Fa x ,
expressed as a floating-point number.
.Sh SEE ALSO
.Xr abs 3 ,
.Xr ceil 3 ,
.Xr fabs 3 ,
.Xr ieee 3 ,
.Xr math 3 ,
.Xr rint 3 ,
.Xr round 3 ,
.Xr trunc 3
.Sh STANDARDS
The
.Fn floor
function conforms to
.St -isoC .
The
.Fn floorf
and
.Fn floorl
functions conform to
.St -isoC-99 .
.Sh HISTORY
A
.Fn floor
function first appeared in
.At v5 .