src/parsec/disk-image/parsec/parsec-benchmark/pkgs/libs/glib/src/docs/reference/glib/html/glib-Type-Conversion-Macros.html - public/gem5-resources - Git at Google

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 <html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Type Conversion Macros</title>
 <meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
 <link rel="home" href="index.html" title="GLib Reference Manual">
 <link rel="up" href="glib-fundamentals.html" title="GLib Fundamentals">
 <link rel="prev" href="glib-Standard-Macros.html" title="Standard Macros">
 <link rel="next" href="glib-Byte-Order-Macros.html" title="Byte Order Macros">
 <meta name="generator" content="GTK-Doc V1.14 (XML mode)">
 <link rel="stylesheet" href="style.css" type="text/css">
 </head>
 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
 <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
 <tr valign="middle">
 <td><a accesskey="p" href="glib-Standard-Macros.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
 <td><a accesskey="u" href="glib-fundamentals.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
 <td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
 <th width="100%" align="center">GLib Reference Manual</th>
 <td><a accesskey="n" href="glib-Byte-Order-Macros.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
 </tr>
 <tr><td colspan="5" class="shortcuts">
 <a href="#glib-Type-Conversion-Macros.synopsis" class="shortcut">Top</a>
                    |
                   <a href="#glib-Type-Conversion-Macros.description" class="shortcut">Description</a>
 </td></tr>
 </table>
 <div class="refentry" title="Type Conversion Macros">
 <a name="glib-Type-Conversion-Macros"></a><div class="titlepage"></div>
 <div class="refnamediv"><table width="100%"><tr>
 <td valign="top">
 <h2><span class="refentrytitle"><a name="glib-Type-Conversion-Macros.top_of_page"></a>Type Conversion Macros</span></h2>
 <p>Type Conversion Macros — portably storing integers in pointer variables</p>
 </td>
 <td valign="top" align="right"></td>
 </tr></table></div>
 <div class="refsynopsisdiv" title="Synopsis">
 <a name="glib-Type-Conversion-Macros.synopsis"></a><h2>Synopsis</h2>
 <pre class="synopsis">
 #include &lt;glib.h&gt;

 #define             <a class="link" href="glib-Type-Conversion-Macros.html#GINT-TO-POINTER:CAPS" title="GINT_TO_POINTER()">GINT_TO_POINTER</a>                     (i)
 #define             <a class="link" href="glib-Type-Conversion-Macros.html#GPOINTER-TO-INT:CAPS" title="GPOINTER_TO_INT()">GPOINTER_TO_INT</a>                     (p)

 #define             <a class="link" href="glib-Type-Conversion-Macros.html#GUINT-TO-POINTER:CAPS" title="GUINT_TO_POINTER()">GUINT_TO_POINTER</a>                    (u)
 #define             <a class="link" href="glib-Type-Conversion-Macros.html#GPOINTER-TO-UINT:CAPS" title="GPOINTER_TO_UINT()">GPOINTER_TO_UINT</a>                    (p)
 #define             <a class="link" href="glib-Type-Conversion-Macros.html#GSIZE-TO-POINTER:CAPS" title="GSIZE_TO_POINTER()">GSIZE_TO_POINTER</a>                    (s)
 #define             <a class="link" href="glib-Type-Conversion-Macros.html#GPOINTER-TO-SIZE:CAPS" title="GPOINTER_TO_SIZE()">GPOINTER_TO_SIZE</a>                    (p)
 </pre>
 </div>
 <div class="refsect1" title="Description">
 <a name="glib-Type-Conversion-Macros.description"></a><h2>Description</h2>
 <p>
 Many times GLib, GTK+, and other libraries allow you to pass "user
 data" to a callback, in the form of a void pointer. From time to time
 you want to pass an integer instead of a pointer. You could allocate
 an integer, with something like:
 </p>
 <div class="informalexample">
   <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
     <tbody>
       <tr>
         <td class="listing_lines" align="right"><pre>1
 2</pre></td>
         <td class="listing_code"><pre class="programlisting"><span class="type">int</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">ip </span><span class="symbol">=</span><span class="normal"> </span><span class="function"><a href="glib-Memory-Allocation.html#g-new">g_new</a></span><span class="normal"> </span><span class="symbol">(</span><span class="type">int</span><span class="symbol">,</span><span class="normal"> </span><span class="number">1</span><span class="symbol">);</span>
 <span class="symbol">*</span><span class="normal">ip </span><span class="symbol">=</span><span class="normal"> </span><span class="number">42</span><span class="symbol">;</span></pre></td>
       </tr>
     </tbody>
   </table>
 </div>

 <p>
 But this is inconvenient, and it's annoying to have to free the
 memory at some later time.
 </p>
 <p>
 Pointers are always at least 32 bits in size (on all platforms GLib
 intends to support). Thus you can store at least 32-bit integer values
 in a pointer value. Naively, you might try this, but it's incorrect:
 </p>
 <div class="informalexample">
   <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
     <tbody>
       <tr>
         <td class="listing_lines" align="right"><pre>1
 2
 3
 4</pre></td>
         <td class="listing_code"><pre class="programlisting"><span class="normal"><a href="glib-Basic-Types.html#gpointer">gpointer</a> p</span><span class="symbol">;</span>
 <span class="type">int</span><span class="normal"> i</span><span class="symbol">;</span>
 <span class="normal">p </span><span class="symbol">=</span><span class="normal"> </span><span class="symbol">(</span><span class="type">void</span><span class="symbol">*)</span><span class="normal"> </span><span class="number">42</span><span class="symbol">;</span>
 <span class="normal">i </span><span class="symbol">=</span><span class="normal"> </span><span class="symbol">(</span><span class="type">int</span><span class="symbol">)</span><span class="normal"> p</span><span class="symbol">;</span></pre></td>
       </tr>
     </tbody>
   </table>
 </div>

 <p>
 Again, that example was <span class="emphasis"><em>not</em></span> correct, don't copy it.
 The problem is that on some systems you need to do this:
 </p>
 <div class="informalexample">
   <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
     <tbody>
       <tr>
         <td class="listing_lines" align="right"><pre>1
 2
 3
 4</pre></td>
         <td class="listing_code"><pre class="programlisting"><span class="normal"><a href="glib-Basic-Types.html#gpointer">gpointer</a> p</span><span class="symbol">;</span>
 <span class="type">int</span><span class="normal"> i</span><span class="symbol">;</span>
 <span class="normal">p </span><span class="symbol">=</span><span class="normal"> </span><span class="symbol">(</span><span class="type">void</span><span class="symbol">*)</span><span class="normal"> </span><span class="symbol">(</span><span class="type">long</span><span class="symbol">)</span><span class="normal"> </span><span class="number">42</span><span class="symbol">;</span>
 <span class="normal">i </span><span class="symbol">=</span><span class="normal"> </span><span class="symbol">(</span><span class="type">int</span><span class="symbol">)</span><span class="normal"> </span><span class="symbol">(</span><span class="type">long</span><span class="symbol">)</span><span class="normal"> p</span><span class="symbol">;</span></pre></td>
       </tr>
     </tbody>
   </table>
 </div>

 <p>
 So <a class="link" href="glib-Type-Conversion-Macros.html#GPOINTER-TO-INT:CAPS" title="GPOINTER_TO_INT()"><code class="function">GPOINTER_TO_INT()</code></a>, <a class="link" href="glib-Type-Conversion-Macros.html#GINT-TO-POINTER:CAPS" title="GINT_TO_POINTER()"><code class="function">GINT_TO_POINTER()</code></a>, etc. do the right thing
 on the current platform.
 </p>
 <p>
 </p>
 <div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;">
 <h3 class="title">Warning</h3>
 <p>
 YOU MAY NOT STORE POINTERS IN INTEGERS. THIS IS NOT PORTABLE IN ANY
 WAY SHAPE OR FORM. These macros <span class="emphasis"><em>ONLY</em></span> allow
 storing integers in pointers, and only preserve 32 bits of the
 integer; values outside the range of a 32-bit integer will be mangled.
 </p>
 </div>
 <p>
 </p>
 </div>
 <div class="refsect1" title="Details">
 <a name="glib-Type-Conversion-Macros.details"></a><h2>Details</h2>
 <div class="refsect2" title="GINT_TO_POINTER()">
 <a name="GINT-TO-POINTER:CAPS"></a><h3>GINT_TO_POINTER()</h3>
 <pre class="programlisting">#define GINT_TO_POINTER(i) ((gpointer) (glong) (i))
 </pre>
 <p>
 Stuffs an integer into a pointer type.
 </p>
 <p>
 Remember, YOU MAY NOT STORE POINTERS IN INTEGERS. THIS IS NOT PORTABLE
 IN ANY WAY SHAPE OR FORM. These macros <span class="emphasis"><em>ONLY</em></span> allow
 storing integers in pointers, and only preserve 32 bits of the
 integer; values outside the range of a 32-bit integer will be mangled.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody><tr>
 <td><p><span class="term"><em class="parameter"><code>i</code></em> :</span></p></td>
 <td>integer to stuff into a pointer.
 </td>
 </tr></tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2" title="GPOINTER_TO_INT()">
 <a name="GPOINTER-TO-INT:CAPS"></a><h3>GPOINTER_TO_INT()</h3>
 <pre class="programlisting">#define GPOINTER_TO_INT(p) ((gint)  (glong) (p))
 </pre>
 <p>
 Extracts an integer from a pointer. The integer must have
 been stored in the pointer with <a class="link" href="glib-Type-Conversion-Macros.html#GINT-TO-POINTER:CAPS" title="GINT_TO_POINTER()"><code class="function">GINT_TO_POINTER()</code></a>.
 </p>
 <p>
 Remember, YOU MAY NOT STORE POINTERS IN INTEGERS. THIS IS NOT PORTABLE
 IN ANY WAY SHAPE OR FORM. These macros <span class="emphasis"><em>ONLY</em></span> allow
 storing integers in pointers, and only preserve 32 bits of the
 integer; values outside the range of a 32-bit integer will be mangled.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody><tr>
 <td><p><span class="term"><em class="parameter"><code>p</code></em> :</span></p></td>
 <td>pointer containing an integer.
 </td>
 </tr></tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2" title="GUINT_TO_POINTER()">
 <a name="GUINT-TO-POINTER:CAPS"></a><h3>GUINT_TO_POINTER()</h3>
 <pre class="programlisting">#define GUINT_TO_POINTER(u) ((gpointer) (gulong) (u))
 </pre>
 <p>
 Stuffs an unsigned integer into a pointer type.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody><tr>
 <td><p><span class="term"><em class="parameter"><code>u</code></em> :</span></p></td>
 <td>unsigned integer to stuff into the pointer.
 </td>
 </tr></tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2" title="GPOINTER_TO_UINT()">
 <a name="GPOINTER-TO-UINT:CAPS"></a><h3>GPOINTER_TO_UINT()</h3>
 <pre class="programlisting">#define GPOINTER_TO_UINT(p) ((guint) (gulong) (p))
 </pre>
 <p>
 Extracts an unsigned integer from a pointer. The integer must have
 been stored in the pointer with <a class="link" href="glib-Type-Conversion-Macros.html#GUINT-TO-POINTER:CAPS" title="GUINT_TO_POINTER()"><code class="function">GUINT_TO_POINTER()</code></a>.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody><tr>
 <td><p><span class="term"><em class="parameter"><code>p</code></em> :</span></p></td>
 <td>pointer to extract an unsigned integer from.
 </td>
 </tr></tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2" title="GSIZE_TO_POINTER()">
 <a name="GSIZE-TO-POINTER:CAPS"></a><h3>GSIZE_TO_POINTER()</h3>
 <pre class="programlisting">#define GSIZE_TO_POINTER(s) ((gpointer) (gsize) (s))
 </pre>
 <p>
 Stuffs a <a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> into a pointer type.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody><tr>
 <td><p><span class="term"><em class="parameter"><code>s</code></em> :</span></p></td>
 <td>
 <a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> to stuff into the pointer.
 </td>
 </tr></tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2" title="GPOINTER_TO_SIZE()">
 <a name="GPOINTER-TO-SIZE:CAPS"></a><h3>GPOINTER_TO_SIZE()</h3>
 <pre class="programlisting">#define GPOINTER_TO_SIZE(p) ((gsize) (p))
 </pre>
 <p>
 Extracts a <a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> from a pointer. The <a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> must have
 been stored in the pointer with <a class="link" href="glib-Type-Conversion-Macros.html#GSIZE-TO-POINTER:CAPS" title="GSIZE_TO_POINTER()"><code class="function">GSIZE_TO_POINTER()</code></a>.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody><tr>
 <td><p><span class="term"><em class="parameter"><code>p</code></em> :</span></p></td>
 <td>pointer to extract a <a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> from.
 </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 </div>
 <div class="footer">
 <hr>
           Generated by GTK-Doc V1.14</div>
 </body>
 </html>
	<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<title>Type Conversion Macros</title>
	<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
	<link rel="home" href="index.html" title="GLib Reference Manual">
	<link rel="up" href="glib-fundamentals.html" title="GLib Fundamentals">
	<link rel="prev" href="glib-Standard-Macros.html" title="Standard Macros">
	<link rel="next" href="glib-Byte-Order-Macros.html" title="Byte Order Macros">
	<meta name="generator" content="GTK-Doc V1.14 (XML mode)">
	<link rel="stylesheet" href="style.css" type="text/css">
	</head>
	<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
	<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
	<tr valign="middle">
	<td><a accesskey="p" href="glib-Standard-Macros.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
	<td><a accesskey="u" href="glib-fundamentals.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
	<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
	<th width="100%" align="center">GLib Reference Manual</th>
	<td><a accesskey="n" href="glib-Byte-Order-Macros.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
	</tr>
	<tr><td colspan="5" class="shortcuts">
	<a href="#glib-Type-Conversion-Macros.synopsis" class="shortcut">Top</a>
	\|
	<a href="#glib-Type-Conversion-Macros.description" class="shortcut">Description</a>
	</td></tr>
	</table>
	<div class="refentry" title="Type Conversion Macros">
	<a name="glib-Type-Conversion-Macros"></a><div class="titlepage"></div>
	<div class="refnamediv"><table width="100%"><tr>
	<td valign="top">
	<h2><span class="refentrytitle"><a name="glib-Type-Conversion-Macros.top_of_page"></a>Type Conversion Macros</span></h2>
	<p>Type Conversion Macros — portably storing integers in pointer variables</p>
	</td>
	<td valign="top" align="right"></td>
	</tr></table></div>
	<div class="refsynopsisdiv" title="Synopsis">
	<a name="glib-Type-Conversion-Macros.synopsis"></a><h2>Synopsis</h2>
	<pre class="synopsis">
	#include <glib.h>

	#define <a class="link" href="glib-Type-Conversion-Macros.html#GINT-TO-POINTER:CAPS" title="GINT_TO_POINTER()">GINT_TO_POINTER</a> (i)
	#define <a class="link" href="glib-Type-Conversion-Macros.html#GPOINTER-TO-INT:CAPS" title="GPOINTER_TO_INT()">GPOINTER_TO_INT</a> (p)

	#define <a class="link" href="glib-Type-Conversion-Macros.html#GUINT-TO-POINTER:CAPS" title="GUINT_TO_POINTER()">GUINT_TO_POINTER</a> (u)
	#define <a class="link" href="glib-Type-Conversion-Macros.html#GPOINTER-TO-UINT:CAPS" title="GPOINTER_TO_UINT()">GPOINTER_TO_UINT</a> (p)
	#define <a class="link" href="glib-Type-Conversion-Macros.html#GSIZE-TO-POINTER:CAPS" title="GSIZE_TO_POINTER()">GSIZE_TO_POINTER</a> (s)
	#define <a class="link" href="glib-Type-Conversion-Macros.html#GPOINTER-TO-SIZE:CAPS" title="GPOINTER_TO_SIZE()">GPOINTER_TO_SIZE</a> (p)
	</pre>
	</div>
	<div class="refsect1" title="Description">
	<a name="glib-Type-Conversion-Macros.description"></a><h2>Description</h2>
	<p>
	Many times GLib, GTK+, and other libraries allow you to pass "user
	data" to a callback, in the form of a void pointer. From time to time
	you want to pass an integer instead of a pointer. You could allocate
	an integer, with something like:
	</p>
	<div class="informalexample">
	<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
	<tbody>
	<tr>
	<td class="listing_lines" align="right"><pre>1
	2</pre></td>
	<td class="listing_code"><pre class="programlisting"><span class="type">int</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">ip </span><span class="symbol">=</span><span class="normal"> </span><span class="function"><a href="glib-Memory-Allocation.html#g-new">g_new</a></span><span class="normal"> </span><span class="symbol">(</span><span class="type">int</span><span class="symbol">,</span><span class="normal"> </span><span class="number">1</span><span class="symbol">);</span>
	<span class="symbol">*</span><span class="normal">ip </span><span class="symbol">=</span><span class="normal"> </span><span class="number">42</span><span class="symbol">;</span></pre></td>
	</tr>
	</tbody>
	</table>
	</div>

	<p>
	But this is inconvenient, and it's annoying to have to free the
	memory at some later time.
	</p>
	<p>
	Pointers are always at least 32 bits in size (on all platforms GLib
	intends to support). Thus you can store at least 32-bit integer values
	in a pointer value. Naively, you might try this, but it's incorrect:
	</p>
	<div class="informalexample">
	<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
	<tbody>
	<tr>
	<td class="listing_lines" align="right"><pre>1
	2
	3
	4</pre></td>
	<td class="listing_code"><pre class="programlisting"><span class="normal"><a href="glib-Basic-Types.html#gpointer">gpointer</a> p</span><span class="symbol">;</span>
	<span class="type">int</span><span class="normal"> i</span><span class="symbol">;</span>
	<span class="normal">p </span><span class="symbol">=</span><span class="normal"> </span><span class="symbol">(</span><span class="type">void</span><span class="symbol">*)</span><span class="normal"> </span><span class="number">42</span><span class="symbol">;</span>
	<span class="normal">i </span><span class="symbol">=</span><span class="normal"> </span><span class="symbol">(</span><span class="type">int</span><span class="symbol">)</span><span class="normal"> p</span><span class="symbol">;</span></pre></td>
	</tr>
	</tbody>
	</table>
	</div>

	<p>
	Again, that example was <span class="emphasis"><em>not</em></span> correct, don't copy it.
	The problem is that on some systems you need to do this:
	</p>
	<div class="informalexample">
	<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
	<tbody>
	<tr>
	<td class="listing_lines" align="right"><pre>1
	2
	3
	4</pre></td>
	<td class="listing_code"><pre class="programlisting"><span class="normal"><a href="glib-Basic-Types.html#gpointer">gpointer</a> p</span><span class="symbol">;</span>
	<span class="type">int</span><span class="normal"> i</span><span class="symbol">;</span>
	<span class="normal">p </span><span class="symbol">=</span><span class="normal"> </span><span class="symbol">(</span><span class="type">void</span><span class="symbol">*)</span><span class="normal"> </span><span class="symbol">(</span><span class="type">long</span><span class="symbol">)</span><span class="normal"> </span><span class="number">42</span><span class="symbol">;</span>
	<span class="normal">i </span><span class="symbol">=</span><span class="normal"> </span><span class="symbol">(</span><span class="type">int</span><span class="symbol">)</span><span class="normal"> </span><span class="symbol">(</span><span class="type">long</span><span class="symbol">)</span><span class="normal"> p</span><span class="symbol">;</span></pre></td>
	</tr>
	</tbody>
	</table>
	</div>

	<p>
	So <a class="link" href="glib-Type-Conversion-Macros.html#GPOINTER-TO-INT:CAPS" title="GPOINTER_TO_INT()"><code class="function">GPOINTER_TO_INT()</code></a>, <a class="link" href="glib-Type-Conversion-Macros.html#GINT-TO-POINTER:CAPS" title="GINT_TO_POINTER()"><code class="function">GINT_TO_POINTER()</code></a>, etc. do the right thing
	on the current platform.
	</p>
	<p>
	</p>
	<div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;">
	<h3 class="title">Warning</h3>
	<p>
	YOU MAY NOT STORE POINTERS IN INTEGERS. THIS IS NOT PORTABLE IN ANY
	WAY SHAPE OR FORM. These macros <span class="emphasis"><em>ONLY</em></span> allow
	storing integers in pointers, and only preserve 32 bits of the
	integer; values outside the range of a 32-bit integer will be mangled.
	</p>
	</div>
	<p>
	</p>
	</div>
	<div class="refsect1" title="Details">
	<a name="glib-Type-Conversion-Macros.details"></a><h2>Details</h2>
	<div class="refsect2" title="GINT_TO_POINTER()">
	<a name="GINT-TO-POINTER:CAPS"></a><h3>GINT_TO_POINTER()</h3>
	<pre class="programlisting">#define GINT_TO_POINTER(i) ((gpointer) (glong) (i))
	</pre>
	<p>
	Stuffs an integer into a pointer type.
	</p>
	<p>
	Remember, YOU MAY NOT STORE POINTERS IN INTEGERS. THIS IS NOT PORTABLE
	IN ANY WAY SHAPE OR FORM. These macros <span class="emphasis"><em>ONLY</em></span> allow
	storing integers in pointers, and only preserve 32 bits of the
	integer; values outside the range of a 32-bit integer will be mangled.
	</p>
	<div class="variablelist"><table border="0">
	<col align="left" valign="top">
	<tbody><tr>
	<td><p><span class="term"><em class="parameter"><code>i</code></em> :</span></p></td>
	<td>integer to stuff into a pointer.
	</td>
	</tr></tbody>
	</table></div>
	</div>
	<hr>
	<div class="refsect2" title="GPOINTER_TO_INT()">
	<a name="GPOINTER-TO-INT:CAPS"></a><h3>GPOINTER_TO_INT()</h3>
	<pre class="programlisting">#define GPOINTER_TO_INT(p) ((gint) (glong) (p))
	</pre>
	<p>
	Extracts an integer from a pointer. The integer must have
	been stored in the pointer with <a class="link" href="glib-Type-Conversion-Macros.html#GINT-TO-POINTER:CAPS" title="GINT_TO_POINTER()"><code class="function">GINT_TO_POINTER()</code></a>.
	</p>
	<p>
	Remember, YOU MAY NOT STORE POINTERS IN INTEGERS. THIS IS NOT PORTABLE
	IN ANY WAY SHAPE OR FORM. These macros <span class="emphasis"><em>ONLY</em></span> allow
	storing integers in pointers, and only preserve 32 bits of the
	integer; values outside the range of a 32-bit integer will be mangled.
	</p>
	<div class="variablelist"><table border="0">
	<col align="left" valign="top">
	<tbody><tr>
	<td><p><span class="term"><em class="parameter"><code>p</code></em> :</span></p></td>
	<td>pointer containing an integer.
	</td>
	</tr></tbody>
	</table></div>
	</div>
	<hr>
	<div class="refsect2" title="GUINT_TO_POINTER()">
	<a name="GUINT-TO-POINTER:CAPS"></a><h3>GUINT_TO_POINTER()</h3>
	<pre class="programlisting">#define GUINT_TO_POINTER(u) ((gpointer) (gulong) (u))
	</pre>
	<p>
	Stuffs an unsigned integer into a pointer type.
	</p>
	<div class="variablelist"><table border="0">
	<col align="left" valign="top">
	<tbody><tr>
	<td><p><span class="term"><em class="parameter"><code>u</code></em> :</span></p></td>
	<td>unsigned integer to stuff into the pointer.
	</td>
	</tr></tbody>
	</table></div>
	</div>
	<hr>
	<div class="refsect2" title="GPOINTER_TO_UINT()">
	<a name="GPOINTER-TO-UINT:CAPS"></a><h3>GPOINTER_TO_UINT()</h3>
	<pre class="programlisting">#define GPOINTER_TO_UINT(p) ((guint) (gulong) (p))
	</pre>
	<p>
	Extracts an unsigned integer from a pointer. The integer must have
	been stored in the pointer with <a class="link" href="glib-Type-Conversion-Macros.html#GUINT-TO-POINTER:CAPS" title="GUINT_TO_POINTER()"><code class="function">GUINT_TO_POINTER()</code></a>.
	</p>
	<div class="variablelist"><table border="0">
	<col align="left" valign="top">
	<tbody><tr>
	<td><p><span class="term"><em class="parameter"><code>p</code></em> :</span></p></td>
	<td>pointer to extract an unsigned integer from.
	</td>
	</tr></tbody>
	</table></div>
	</div>
	<hr>
	<div class="refsect2" title="GSIZE_TO_POINTER()">
	<a name="GSIZE-TO-POINTER:CAPS"></a><h3>GSIZE_TO_POINTER()</h3>
	<pre class="programlisting">#define GSIZE_TO_POINTER(s) ((gpointer) (gsize) (s))
	</pre>
	<p>
	Stuffs a <a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> into a pointer type.
	</p>
	<div class="variablelist"><table border="0">
	<col align="left" valign="top">
	<tbody><tr>
	<td><p><span class="term"><em class="parameter"><code>s</code></em> :</span></p></td>
	<td>
	<a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> to stuff into the pointer.
	</td>
	</tr></tbody>
	</table></div>
	</div>
	<hr>
	<div class="refsect2" title="GPOINTER_TO_SIZE()">
	<a name="GPOINTER-TO-SIZE:CAPS"></a><h3>GPOINTER_TO_SIZE()</h3>
	<pre class="programlisting">#define GPOINTER_TO_SIZE(p) ((gsize) (p))
	</pre>
	<p>
	Extracts a <a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> from a pointer. The <a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> must have
	been stored in the pointer with <a class="link" href="glib-Type-Conversion-Macros.html#GSIZE-TO-POINTER:CAPS" title="GSIZE_TO_POINTER()"><code class="function">GSIZE_TO_POINTER()</code></a>.
	</p>
	<div class="variablelist"><table border="0">
	<col align="left" valign="top">
	<tbody><tr>
	<td><p><span class="term"><em class="parameter"><code>p</code></em> :</span></p></td>
	<td>pointer to extract a <a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> from.
	</td>
	</tr></tbody>
	</table></div>
	</div>
	</div>
	</div>
	<div class="footer">
	<hr>
	Generated by GTK-Doc V1.14</div>
	</body>
	</html>