upstream-man-pages/manglsl/round.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
   3               "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
   4 <refentry id="round">
   5     <refmeta>
   6         <refmetainfo>
   7             <copyright>
   8                 <year>2011</year>
   9                 <holder>Khronos Group</holder>
  10             </copyright>
  11         </refmetainfo>
  12         <refentrytitle>round</refentrytitle>
  13         <manvolnum>3G</manvolnum>
  14     </refmeta>
  15     <refnamediv>
  16         <refname>round</refname>
  17         <refpurpose>find the nearest integer less than or equal to the parameter</refpurpose>
  18     </refnamediv>
  19     <refsynopsisdiv><title>Declaration</title>
  20         <funcsynopsis>
  21             <funcprototype>
  22                 <funcdef>genType <function>round</function></funcdef>
  23                 <paramdef>genType <parameter>x</parameter></paramdef>
  24             </funcprototype>
  25         </funcsynopsis>
  26         <funcsynopsis>
  27             <funcprototype>
  28                 <funcdef>genDType <function>round</function></funcdef>
  29                 <paramdef>genDType <parameter>x</parameter></paramdef>
  30             </funcprototype>
  31         </funcsynopsis>
  32     </refsynopsisdiv>
  33     <refsect1 id="parameters"><title>Parameters</title>
  34         <variablelist>
  35         <varlistentry>
  36             <term><parameter>x</parameter></term>
  37             <listitem>
  38                 <para>
  39                     Specify the value to evaluate.
  40                 </para>
  41             </listitem>
  42         </varlistentry>
  43         </variablelist>
  44     </refsect1>
  45     <refsect1 id="description"><title>Description</title>
  46         <para>
  47             <function>round</function> returns a value equal to the nearest integer to <parameter>x</parameter>.
  48             The fraction 0.5 will round in a direction chosen by the implementation, presumably the direction that is
  49             fastest. This includes the possibility that <function>round</function>(<parameter>x</parameter>) returns the
  50             same value as <citerefentry><refentrytitle>roundEven</refentrytitle></citerefentry>(<parameter>x</parameter>)
  51             for all values of <parameter>x</parameter>.
  52         </para>
  53     </refsect1>
  54     <refsect1 id="versions"><title>Version Support</title>
  55         <informaltable frame="topbot">
  56             #VARTABLECOLS#
  57                 <thead>
  58                     #FUNCTABLEHEADER#
  59                     <row>
  60                         <entry>round (genType)</entry>#newin13#
  61                     </row>
  62                     <row>
  63                         <entry>round (genDType)</entry>#newin40#
  64                     </row>
  65                 </thead>
  66             </tgroup>
  67         </informaltable>
  68     </refsect1>
  69     <refsect1 id="seealso"><title>See Also</title>
  70         <para>
  71             <citerefentry><refentrytitle>floor</refentrytitle></citerefentry>,
  72             <citerefentry><refentrytitle>roundEven</refentrytitle></citerefentry>
  73         </para>
  74     </refsect1>
  75     <refsect1 id="Copyright"><title>Copyright</title>
  76         <para>
  77             Copyright <trademark class="copyright"></trademark> 2011 Khronos Group.
  78             This material may be distributed subject to the terms and conditions set forth in
  79             the Open Publication License, v 1.0, 8 June 1999.
  80             <ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
  81         </para>
  82     </refsect1>
  83 </refentry>