| <?xml version="1.0" encoding="UTF-8"?> |
| <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN" |
| "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd" [ |
| <!ENTITY mathFunctionsInc SYSTEM "mathFunctionsInc.xml"> |
| ]> |
| <refentry> |
| <refentryinfo> |
| <keywordset> |
| <keyword>lgamma, lgamma_r</keyword> |
| </keywordset> |
| </refentryinfo> |
| |
| <refmeta> |
| <refentrytitle>lgamma, lgamma_r</refentrytitle> |
| |
| <refmiscinfo> |
| <copyright> |
| <year>2007-2013</year> |
| <holder>The Khronos Group Inc. |
| Permission is hereby granted, free of charge, to any person obtaining a |
| copy of this software and/or associated documentation files (the |
| "Materials"), to deal in the Materials without restriction, including |
| without limitation the rights to use, copy, modify, merge, publish, |
| distribute, sublicense, and/or sell copies of the Materials, and to |
| permit persons to whom the Materials are furnished to do so, subject to |
| the condition that this copyright notice and permission notice shall be included |
| in all copies or substantial portions of the Materials.</holder> |
| </copyright> |
| </refmiscinfo> |
| <manvolnum>3</manvolnum> |
| </refmeta> |
| |
| <!-- ================================ SYNOPSIS --> |
| |
| <refnamediv id="lgamma"> |
| <refname>lgamma, lgamma_r</refname> |
| |
| <refpurpose> |
| Log gamma functions. |
| </refpurpose> |
| </refnamediv> |
| |
| <!-- floatn VARIATIONS=============================== --> |
| |
| <refsynopsisdiv xmlns:xlink="http://www.w3.org/1999/xlink"><title></title> |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| gentype |
| <function> |
| lgamma |
| </function> |
| </funcdef> |
| <paramdef>gentype<parameter>x</parameter></paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">float<replaceable>n</replaceable></link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">float<replaceable>n</replaceable></link> |
| <parameter>x</parameter></paramdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">int<replaceable>n</replaceable></link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">float</link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">float</link> |
| <parameter>x</parameter></paramdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">int</link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <!-- double and doublen VARIATIONS=============================== --> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">double<replaceable>n</replaceable></link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">double<replaceable>n</replaceable></link> |
| <parameter>x</parameter></paramdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">int<replaceable>n</replaceable></link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">double</link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">double</link> |
| <parameter>x</parameter></paramdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">int<replaceable>n</replaceable></link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <!-- halfn VARIATIONS=============================== --> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">half<replaceable>n</replaceable></link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">half<replaceable>n</replaceable></link> |
| <parameter>x</parameter></paramdef> |
| <paramdef><link xlink:href="global.html">__global</link> |
| <link xlink:href="vectorDataTypes.html">int<replaceable>n</replaceable></link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">half<replaceable>n</replaceable></link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">half<replaceable>n</replaceable></link> |
| <parameter>x</parameter></paramdef> |
| <paramdef><link xlink:href="local.html">__local</link> |
| <link xlink:href="vectorDataTypes.html">int<replaceable>n</replaceable></link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">half<replaceable>n</replaceable></link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">half<replaceable>n</replaceable></link> |
| <parameter>x</parameter></paramdef> |
| <paramdef><link xlink:href="private.html">__private</link> |
| <link xlink:href="vectorDataTypes.html">int<replaceable>n</replaceable></link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">half<replaceable>n</replaceable></link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">half<replaceable>n</replaceable></link> |
| <parameter>x</parameter></paramdef> |
| <paramdef><link xlink:href="vectorDataTypes.html">int<replaceable>n</replaceable></link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <!-- half VARIATIONS=============================== --> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">half</link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">half</link> |
| <parameter>x</parameter></paramdef> |
| <paramdef><link xlink:href="global.html">__global</link> |
| <link xlink:href="vectorDataTypes.html">int</link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">half</link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">half</link> |
| <parameter>x</parameter></paramdef> |
| <paramdef><link xlink:href="local.html">__local</link> |
| <link xlink:href="vectorDataTypes.html">int</link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">half</link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">half</link> |
| <parameter>x</parameter></paramdef> |
| <paramdef><link xlink:href="private.html">__private</link> |
| <link xlink:href="vectorDataTypes.html">int</link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="vectorDataTypes.html">half</link> |
| <function> |
| lgamma_r |
| </function> |
| </funcdef> |
| <paramdef> |
| <link xlink:href="vectorDataTypes.html">half</link> |
| <parameter>x</parameter></paramdef> |
| <paramdef><link xlink:href="vectorDataTypes.html">int</link> |
| <parameter>*signp</parameter> |
| </paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| |
| </refsynopsisdiv> |
| |
| <!-- ================================ DESCRIPTION --> |
| |
| <refsect1 id="description"><title>Description</title> |
| <para> |
| Returns the natural logarithm of the absolute value of the gamma function. The sign |
| of the gamma function is returned in the <varname>signp</varname> argument of the |
| <function>lgamma_r</function>. |
| </para> |
| |
| <para> |
| An application that wants to use <type>half</type> |
| and <type>half<replaceable>n</replaceable></type> types |
| will need to include the <code>#pragma OPENCL EXTENSION |
| <citerefentry><refentrytitle>cl_khr_fp16</refentrytitle></citerefentry> |
| : enable</code> directive. If extended with |
| <citerefentry><refentrytitle>cl_khr_fp16</refentrytitle></citerefentry>, |
| generic type name <type>gentype</type> also includes <type>half</type> and |
| <type>half{2|3|4|8|16}</type>. |
| </para> |
| </refsect1> |
| |
| <!-- ================================ NOTES --> |
| |
| <refsect1 id="notes"><title>Notes</title> |
| |
| &mathFunctionsInc; |
| |
| </refsect1> |
| |
| <!-- ================================ EXAMPLE --> |
| <!-- DO NOT DELETE IN CASE AN EXAMPLE IS ADDED IN THE FUTURE --> |
| <!-- |
| <refsect2 id="example1"> |
| <title> |
| Example |
| </title> |
| |
| <informaltable frame="none"> |
| <tgroup cols="1" align="left" colsep="0" rowsep="0"> |
| <colspec colname="col1" colnum="1" /> |
| <tbody> |
| <row> |
| <entry> |
| Example goes here - it will be set in "code" type with white space preserved. |
| </entry> |
| </row> |
| </tbody> |
| </tgroup> |
| </informaltable> |
| </refsect2> |
| --> |
| |
| <!-- ================================ SPECIFICATION --> |
| <!-- Set the "uri" attribute in the <olink /> element to the "named destination" for the PDF page |
| --> |
| <refsect1 id="specification"><title>Specification</title> |
| <para> |
| <imageobject> |
| <imagedata fileref="pdficon_small1.gif" format="gif" /> |
| </imageobject> |
| |
| <olink uri="mathFunctions">OpenCL Specification</olink> |
| </para> |
| </refsect1> |
| |
| <!-- ================================ ALSO SEE --> |
| |
| <refsect1 id="seealso"><title>Also see</title> |
| <para> |
| <citerefentry href="mathFunctions"><refentrytitle>Math Functions</refentrytitle></citerefentry> |
| </para> |
| </refsect1> |
| |
| <!-- ============================== COPYRIGHT --> |
| <!-- Content included from copyright.inc.xsl --> |
| |
| <refsect3 id="Copyright"><title></title> |
| <imageobject> |
| <imagedata fileref="KhronosLogo.jpg" format="jpg" /> |
| </imageobject> |
| <para /> |
| </refsect3> |
| |
| <!-- 12-Dec-2013, rev. 19 --> |
| </refentry> |
| |