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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
- This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
- project.
-
- Copyright (C) 1998-2018 OpenLink Software
-
- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; only version 2 of the License, dated June 1991.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
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- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-
-->
<refentry id="fn_floor">
<refmeta>
<refentrytitle>floor</refentrytitle>
<refmiscinfo>number</refmiscinfo>
</refmeta>
<refnamediv>
<refname>floor</refname>
<refpurpose>Round a number to negative infinity.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_floor">
<funcprototype id="fproto_floor">
<funcdef><function>floor</function></funcdef>
<paramdef>in <parameter>x</parameter> double precision</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_floor"><title>Description</title>
<para><function>floor</function> calculates the largest integer smaller than or equal to <parameter>x</parameter>.</para>
</refsect1>
<refsect1 id="params_floor"><title>Parameters</title>
<refsect2><title>x</title>
<para><type>double precision</type></para>
</refsect2>
</refsect1>
<refsect1 id="ret_floor"><title>Return Values</title>
<para><function>floor</function> returns a 32-bit
<type>integer</type>.</para>
</refsect1>
<refsect1 id="examples_floor"><title>Examples</title>
<example id="ex_floor"><title>Simple Examples</title>
<screen>
SQL> select floor (-0.513513), floor (0.513513), floor (123.4567);
callret callret callret
INTEGER INTEGER INTEGER
_______________________________________________________________________________
-1 0 123
1 Rows. -- 3 msec.
</screen>
</example>
</refsect1>
<refsect1 id="seealso_floor"><title>See also</title>
<para><link linkend="fn_ceiling"><function>ceiling</function></link></para>
</refsect1>
</refentry>
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