upstream-man-pages/manglsl/isinf.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="isinf">
   5     <refmeta>
   6         <refmetainfo>
   7             <copyright>
   8                 <year>2011</year>
   9                 <holder>Khronos Group</holder>
  10             </copyright>
  11         </refmetainfo>
  12         <refentrytitle>isinf</refentrytitle>
  13         <manvolnum>3G</manvolnum>
  14     </refmeta>
  15     <refnamediv>
  16         <refname>isinf</refname>
  17         <refpurpose>determine whether the parameter is positive or negative infinity</refpurpose>
  18     </refnamediv>
  19     <refsynopsisdiv><title>Declaration</title>
  20         <funcsynopsis>
  21             <funcprototype>
  22                 <funcdef>genBType <function>isinf</function></funcdef>
  23                 <paramdef>genType <parameter>x</parameter></paramdef>
  24             </funcprototype>
  25             <funcprototype>
  26                 <funcdef>genBType <function>isinf</function></funcdef>
  27                 <paramdef>genDType <parameter>x</parameter></paramdef>
  28             </funcprototype>
  29         </funcsynopsis>
  30     </refsynopsisdiv>
  31     <refsect1 id="parameters"><title>Parameters</title>
  32         <variablelist>
  33         <varlistentry>
  34             <term><parameter>x</parameter></term>
  35             <listitem>
  36                 <para>
  37                     Specifies the value to test for infinity.
  38                 </para>
  39             </listitem>
  40         </varlistentry>
  41         </variablelist>
  42     </refsect1>
  43     <refsect1 id="description"><title>Description</title>
  44         <para>
  45             For each element element <emphasis>i</emphasis> of the result, <function>isinf</function> returns <constant>true</constant> if
  46             <parameter>x</parameter>[<emphasis>i</emphasis>] is posititve or negative floating point infinity and false otherwise.
  47         </para>
  48     </refsect1>
  49     <refsect1 id="versions"><title>Version Support</title>
  50         <informaltable frame="topbot">
  51             #VARTABLECOLS#
  52                 <thead>
  53                     #FUNCTABLEHEADER#
  54                     <row>
  55                         <entry>isinf (genType)</entry>#newin11#
  56                     </row>
  57                     <row>
  58                         <entry>isinf (genDType)</entry>#newin40#
  59                     </row>
  60                 </thead>
  61             </tgroup>
  62         </informaltable>
  63     </refsect1>
  64     <refsect1 id="seealso"><title>See Also</title>
  65         <para>
  66             <citerefentry><refentrytitle>isnan</refentrytitle></citerefentry>
  67         </para>
  68     </refsect1>
  69     <refsect1 id="Copyright"><title>Copyright</title>
  70         <para>
  71             Copyright <trademark class="copyright"></trademark> 2011 Khronos Group.
  72             This material may be distributed subject to the terms and conditions set forth in
  73             the Open Publication License, v 1.0, 8 June 1999.
  74             <ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
  75         </para>
  76     </refsect1>
  77 </refentry>