docs/reference/glib/html/glib-Basic-Types.html

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
   2 <html>
   3 <head>
   4 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   5 <title>Basic Types</title>
   6 <meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
   7 <link rel="home" href="index.html" title="GLib Reference Manual">
   8 <link rel="up" href="glib-fundamentals.html" title="GLib Fundamentals">
   9 <link rel="prev" href="glib-Version-Information.html" title="Version Information">
  10 <link rel="next" href="glib-Limits-of-Basic-Types.html" title="Limits of Basic Types">
  11 <meta name="generator" content="GTK-Doc V1.13 (XML mode)">
  12 <link rel="stylesheet" href="style.css" type="text/css">
  13 <link rel="chapter" href="glib.html" title="GLib Overview">
  14 <link rel="chapter" href="glib-fundamentals.html" title="GLib Fundamentals">
  15 <link rel="chapter" href="glib-core.html" title="GLib Core Application Support">
  16 <link rel="chapter" href="glib-utilities.html" title="GLib Utilities">
  17 <link rel="chapter" href="glib-data-types.html" title="GLib Data Types">
  18 <link rel="chapter" href="tools.html" title="GLib Tools">
  19 <link rel="index" href="api-index-full.html" title="Index">
  20 <link rel="index" href="api-index-deprecated.html" title="Index of deprecated symbols">
  21 <link rel="index" href="api-index-2-2.html" title="Index of new symbols in 2.2">
  22 <link rel="index" href="api-index-2-4.html" title="Index of new symbols in 2.4">
  23 <link rel="index" href="api-index-2-6.html" title="Index of new symbols in 2.6">
  24 <link rel="index" href="api-index-2-8.html" title="Index of new symbols in 2.8">
  25 <link rel="index" href="api-index-2-10.html" title="Index of new symbols in 2.10">
  26 <link rel="index" href="api-index-2-12.html" title="Index of new symbols in 2.12">
  27 <link rel="index" href="api-index-2-14.html" title="Index of new symbols in 2.14">
  28 <link rel="index" href="api-index-2-16.html" title="Index of new symbols in 2.16">
  29 <link rel="index" href="api-index-2-18.html" title="Index of new symbols in 2.18">
  30 <link rel="index" href="api-index-2-20.html" title="Index of new symbols in 2.20">
  31 <link rel="index" href="api-index-2-22.html" title="Index of new symbols in 2.22">
  32 <link rel="index" href="api-index-2-24.html" title="Index of new symbols in 2.24">
  33 </head>
  34 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
  35 <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
  36 <tr valign="middle">
  37 <td><a accesskey="p" href="glib-Version-Information.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
  38 <td><a accesskey="u" href="glib-fundamentals.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
  39 <td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
  40 <th width="100%" align="center">GLib Reference Manual</th>
  41 <td><a accesskey="n" href="glib-Limits-of-Basic-Types.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
  42 </tr>
  43 <tr><td colspan="5" class="shortcuts">
  44 <a href="#glib-Basic-Types.synopsis" class="shortcut">Top</a>
  45                    |
  46                   <a href="#glib-Basic-Types.description" class="shortcut">Description</a>
  47 </td></tr>
  48 </table>
  49 <div class="refentry" title="Basic Types">
  50 <a name="glib-Basic-Types"></a><div class="titlepage"></div>
  51 <div class="refnamediv"><table width="100%"><tr>
  52 <td valign="top">
  53 <h2><span class="refentrytitle"><a name="glib-Basic-Types.top_of_page"></a>Basic Types</span></h2>
  54 <p>Basic Types — standard GLib types, defined for ease-of-use and portability</p>
  55 </td>
  56 <td valign="top" align="right"></td>
  57 </tr></table></div>
  58 <div class="refsynopsisdiv" title="Synopsis">
  59 <a name="glib-Basic-Types.synopsis"></a><h2>Synopsis</h2>
  60 <pre class="synopsis">
  61 #include &lt;glib.h&gt;
  62
  63 typedef             <a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean">gboolean</a>;
  64 typedef             <a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer">gpointer</a>;
  65 typedef             <a class="link" href="glib-Basic-Types.html#gconstpointer" title="gconstpointer">gconstpointer</a>;
  66 typedef             <a class="link" href="glib-Basic-Types.html#gchar" title="gchar">gchar</a>;
  67 typedef             <a class="link" href="glib-Basic-Types.html#guchar" title="guchar">guchar</a>;
  68
  69 typedef             <a class="link" href="glib-Basic-Types.html#gint" title="gint">gint</a>;
  70 typedef             <a class="link" href="glib-Basic-Types.html#guint" title="guint">guint</a>;
  71 typedef             <a class="link" href="glib-Basic-Types.html#gshort" title="gshort">gshort</a>;
  72 typedef             <a class="link" href="glib-Basic-Types.html#gushort" title="gushort">gushort</a>;
  73 typedef             <a class="link" href="glib-Basic-Types.html#glong" title="glong">glong</a>;
  74 typedef             <a class="link" href="glib-Basic-Types.html#gulong" title="gulong">gulong</a>;
  75
  76 typedef             <a class="link" href="glib-Basic-Types.html#gint8" title="gint8">gint8</a>;
  77 typedef             <a class="link" href="glib-Basic-Types.html#guint8" title="guint8">guint8</a>;
  78 typedef             <a class="link" href="glib-Basic-Types.html#gint16" title="gint16">gint16</a>;
  79 typedef             <a class="link" href="glib-Basic-Types.html#guint16" title="guint16">guint16</a>;
  80 typedef             <a class="link" href="glib-Basic-Types.html#gint32" title="gint32">gint32</a>;
  81 typedef             <a class="link" href="glib-Basic-Types.html#guint32" title="guint32">guint32</a>;
  82
  83 #define             <a class="link" href="glib-Basic-Types.html#G-HAVE-GINT64:CAPS" title="G_HAVE_GINT64">G_HAVE_GINT64</a>
  84 typedef             <a class="link" href="glib-Basic-Types.html#gint64" title="gint64">gint64</a>;
  85 typedef             <a class="link" href="glib-Basic-Types.html#guint64" title="guint64">guint64</a>;
  86 #define             <a class="link" href="glib-Basic-Types.html#G-GINT64-CONSTANT:CAPS" title="G_GINT64_CONSTANT()">G_GINT64_CONSTANT</a>                   (val)
  87 #define             <a class="link" href="glib-Basic-Types.html#G-GUINT64-CONSTANT:CAPS" title="G_GUINT64_CONSTANT()">G_GUINT64_CONSTANT</a>                  (val)
  88
  89 typedef             <a class="link" href="glib-Basic-Types.html#gfloat" title="gfloat">gfloat</a>;
  90 typedef             <a class="link" href="glib-Basic-Types.html#gdouble" title="gdouble">gdouble</a>;
  91
  92 typedef             <a class="link" href="glib-Basic-Types.html#gsize" title="gsize">gsize</a>;
  93 typedef             <a class="link" href="glib-Basic-Types.html#gssize" title="gssize">gssize</a>;
  94 typedef             <a class="link" href="glib-Basic-Types.html#goffset" title="goffset">goffset</a>;
  95 #define             <a class="link" href="glib-Basic-Types.html#G-GOFFSET-CONSTANT:CAPS" title="G_GOFFSET_CONSTANT()">G_GOFFSET_CONSTANT</a>                  (val)
  96
  97 typedef             <a class="link" href="glib-Basic-Types.html#gintptr" title="gintptr">gintptr</a>;
  98 typedef             <a class="link" href="glib-Basic-Types.html#guintptr" title="guintptr">guintptr</a>;
  99 </pre>
 100 </div>
 101 <div class="refsect1" title="Description">
 102 <a name="glib-Basic-Types.description"></a><h2>Description</h2>
 103 <p>
 104 GLib defines a number of commonly used types, which can be divided into
 105 4 groups:
 106 </p>
 107 <div class="itemizedlist"><ul class="itemizedlist" type="disc">
 108 <li class="listitem"><p>
 109 New types which are not part of standard C (but are defined
 110 in various C standard library header files) -
 111 <a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="type">gboolean</span></a>, <a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a>, <a class="link" href="glib-Basic-Types.html#gssize" title="gssize"><span class="type">gssize</span></a>, <a class="link" href="glib-Basic-Types.html#goffset" title="goffset"><span class="type">goffset</span></a>, <a class="link" href="glib-Basic-Types.html#gintptr" title="gintptr"><span class="type">gintptr</span></a>, <a class="link" href="glib-Basic-Types.html#guintptr" title="guintptr"><span class="type">guintptr</span></a>.
 112 </p></li>
 113 <li class="listitem"><p>
 114 Integer types which are guaranteed to be the same size across all platforms -
 115 <a class="link" href="glib-Basic-Types.html#gint8" title="gint8"><span class="type">gint8</span></a>, <a class="link" href="glib-Basic-Types.html#guint8" title="guint8"><span class="type">guint8</span></a>, <a class="link" href="glib-Basic-Types.html#gint16" title="gint16"><span class="type">gint16</span></a>, <a class="link" href="glib-Basic-Types.html#guint16" title="guint16"><span class="type">guint16</span></a>, <a class="link" href="glib-Basic-Types.html#gint32" title="gint32"><span class="type">gint32</span></a>, <a class="link" href="glib-Basic-Types.html#guint32" title="guint32"><span class="type">guint32</span></a>, <a class="link" href="glib-Basic-Types.html#gint64" title="gint64"><span class="type">gint64</span></a>, <a class="link" href="glib-Basic-Types.html#guint64" title="guint64"><span class="type">guint64</span></a>.
 116 </p></li>
 117 <li class="listitem"><p>
 118 Types which are easier to use than their standard C counterparts -
 119 <a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a>, <a class="link" href="glib-Basic-Types.html#gconstpointer" title="gconstpointer"><span class="type">gconstpointer</span></a>, <a class="link" href="glib-Basic-Types.html#guchar" title="guchar"><span class="type">guchar</span></a>, <a class="link" href="glib-Basic-Types.html#guint" title="guint"><span class="type">guint</span></a>, <a class="link" href="glib-Basic-Types.html#gushort" title="gushort"><span class="type">gushort</span></a>, <a class="link" href="glib-Basic-Types.html#gulong" title="gulong"><span class="type">gulong</span></a>.
 120 </p></li>
 121 <li class="listitem"><p>
 122 Types which correspond exactly to standard C types, but are included
 123 for completeness - <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a>, <a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a>, <a class="link" href="glib-Basic-Types.html#gshort" title="gshort"><span class="type">gshort</span></a>, <a class="link" href="glib-Basic-Types.html#glong" title="glong"><span class="type">glong</span></a>, <a class="link" href="glib-Basic-Types.html#gfloat" title="gfloat"><span class="type">gfloat</span></a>, <a class="link" href="glib-Basic-Types.html#gdouble" title="gdouble"><span class="type">gdouble</span></a>.
 124 </p></li>
 125 </ul></div>
 126 <p>
 127 </p>
 128 </div>
 129 <div class="refsect1" title="Details">
 130 <a name="glib-Basic-Types.details"></a><h2>Details</h2>
 131 <div class="refsect2" title="gboolean">
 132 <a name="gboolean"></a><h3>gboolean</h3>
 133 <pre class="programlisting">typedef gint   gboolean;
 134 </pre>
 135 <p>
 136 A standard <span class="type">boolean</span> type.
 137 Variables of this type should only contain the value <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> or <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a>.
 138 </p>
 139 </div>
 140 <hr>
 141 <div class="refsect2" title="gpointer">
 142 <a name="gpointer"></a><h3>gpointer</h3>
 143 <pre class="programlisting">typedef void* gpointer;
 144 </pre>
 145 <p>
 146 An untyped pointer.
 147 <a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> looks better and is easier to use than <span class="type">void*</span>.
 148 </p>
 149 </div>
 150 <hr>
 151 <div class="refsect2" title="gconstpointer">
 152 <a name="gconstpointer"></a><h3>gconstpointer</h3>
 153 <pre class="programlisting">typedef const void *gconstpointer;
 154 </pre>
 155 <p>
 156 An untyped pointer to constant data.
 157 The data pointed to should not be changed.
 158 </p>
 159 <p>
 160 This is typically used in function prototypes to indicate that the
 161 data pointed to will not be altered by the function.
 162 </p>
 163 </div>
 164 <hr>
 165 <div class="refsect2" title="gchar">
 166 <a name="gchar"></a><h3>gchar</h3>
 167 <pre class="programlisting">typedef char   gchar;
 168 </pre>
 169 <p>
 170 Corresponds to the standard C <span class="type">char</span> type.
 171 </p>
 172 </div>
 173 <hr>
 174 <div class="refsect2" title="guchar">
 175 <a name="guchar"></a><h3>guchar</h3>
 176 <pre class="programlisting">typedef unsigned char   guchar;
 177 </pre>
 178 <p>
 179 Corresponds to the standard C <span class="type">unsigned char</span> type.
 180 </p>
 181 </div>
 182 <hr>
 183 <div class="refsect2" title="gint">
 184 <a name="gint"></a><h3>gint</h3>
 185 <pre class="programlisting">typedef int    gint;
 186 </pre>
 187 <p>
 188 Corresponds to the standard C <span class="type">int</span> type.
 189 Values of this type can range from <a class="link" href="glib-Limits-of-Basic-Types.html#G-MININT:CAPS" title="G_MININT"><span class="type">G_MININT</span></a> to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXINT:CAPS" title="G_MAXINT"><span class="type">G_MAXINT</span></a>.
 190 </p>
 191 </div>
 192 <hr>
 193 <div class="refsect2" title="guint">
 194 <a name="guint"></a><h3>guint</h3>
 195 <pre class="programlisting">typedef unsigned int    guint;
 196 </pre>
 197 <p>
 198 Corresponds to the standard C <span class="type">unsigned int</span> type.
 199 Values of this type can range from 0 to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXUINT:CAPS" title="G_MAXUINT"><span class="type">G_MAXUINT</span></a>.
 200 </p>
 201 </div>
 202 <hr>
 203 <div class="refsect2" title="gshort">
 204 <a name="gshort"></a><h3>gshort</h3>
 205 <pre class="programlisting">typedef short  gshort;
 206 </pre>
 207 <p>
 208 Corresponds to the standard C <span class="type">short</span> type.
 209 Values of this type can range from <a class="link" href="glib-Limits-of-Basic-Types.html#G-MINSHORT:CAPS" title="G_MINSHORT"><span class="type">G_MINSHORT</span></a> to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXSHORT:CAPS" title="G_MAXSHORT"><span class="type">G_MAXSHORT</span></a>.
 210 </p>
 211 </div>
 212 <hr>
 213 <div class="refsect2" title="gushort">
 214 <a name="gushort"></a><h3>gushort</h3>
 215 <pre class="programlisting">typedef unsigned short  gushort;
 216 </pre>
 217 <p>
 218 Corresponds to the standard C <span class="type">unsigned short</span> type.
 219 Values of this type can range from 0 to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXUSHORT:CAPS" title="G_MAXUSHORT"><span class="type">G_MAXUSHORT</span></a>.
 220 </p>
 221 </div>
 222 <hr>
 223 <div class="refsect2" title="glong">
 224 <a name="glong"></a><h3>glong</h3>
 225 <pre class="programlisting">typedef long   glong;
 226 </pre>
 227 <p>
 228 Corresponds to the standard C <span class="type">long</span> type.
 229 Values of this type can range from <a class="link" href="glib-Limits-of-Basic-Types.html#G-MINLONG:CAPS" title="G_MINLONG"><span class="type">G_MINLONG</span></a> to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXLONG:CAPS" title="G_MAXLONG"><span class="type">G_MAXLONG</span></a>.
 230 </p>
 231 </div>
 232 <hr>
 233 <div class="refsect2" title="gulong">
 234 <a name="gulong"></a><h3>gulong</h3>
 235 <pre class="programlisting">typedef unsigned long   gulong;
 236 </pre>
 237 <p>
 238 Corresponds to the standard C <span class="type">unsigned long</span> type.
 239 Values of this type can range from 0 to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXULONG:CAPS" title="G_MAXULONG"><span class="type">G_MAXULONG</span></a>.
 240 </p>
 241 </div>
 242 <hr>
 243 <div class="refsect2" title="gint8">
 244 <a name="gint8"></a><h3>gint8</h3>
 245 <pre class="programlisting">typedef signed char gint8;
 246 </pre>
 247 <p>
 248 A signed integer guaranteed to be 8 bits on all platforms.
 249 Values of this type can range from <a class="link" href="glib-Limits-of-Basic-Types.html#G-MININT8:CAPS" title="G_MININT8"><span class="type">G_MININT8</span></a> (= -128) to
 250 <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXINT8:CAPS" title="G_MAXINT8"><span class="type">G_MAXINT8</span></a> (= 127).
 251 </p>
 252 </div>
 253 <hr>
 254 <div class="refsect2" title="guint8">
 255 <a name="guint8"></a><h3>guint8</h3>
 256 <pre class="programlisting">typedef unsigned char guint8;
 257 </pre>
 258 <p>
 259 An unsigned integer guaranteed to be 8 bits on all platforms.
 260 Values of this type can range from 0 to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXUINT8:CAPS" title="G_MAXUINT8"><span class="type">G_MAXUINT8</span></a> (= 255).
 261 </p>
 262 </div>
 263 <hr>
 264 <div class="refsect2" title="gint16">
 265 <a name="gint16"></a><h3>gint16</h3>
 266 <pre class="programlisting">typedef signed short gint16;
 267 </pre>
 268 <p>
 269 A signed integer guaranteed to be 16 bits on all platforms.
 270 Values of this type can range from <a class="link" href="glib-Limits-of-Basic-Types.html#G-MININT16:CAPS" title="G_MININT16"><span class="type">G_MININT16</span></a> (= -32,768) to
 271 <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXINT16:CAPS" title="G_MAXINT16"><span class="type">G_MAXINT16</span></a> (= 32,767).
 272 </p>
 273 <p>
 274 To print or scan values of this type, use
 275 <a class="link" href="glib-Miscellaneous-Macros.html#G-GINT16-MODIFIER:CAPS" title="G_GINT16_MODIFIER"><code class="literal">G_GINT16_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GINT16-FORMAT:CAPS" title="G_GINT16_FORMAT"><code class="literal">G_GINT16_FORMAT</code></a>.
 276 </p>
 277 </div>
 278 <hr>
 279 <div class="refsect2" title="guint16">
 280 <a name="guint16"></a><h3>guint16</h3>
 281 <pre class="programlisting">typedef unsigned short guint16;
 282 </pre>
 283 <p>
 284 An unsigned integer guaranteed to be 16 bits on all platforms.
 285 Values of this type can range from 0 to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXUINT16:CAPS" title="G_MAXUINT16"><span class="type">G_MAXUINT16</span></a> (= 65,535).
 286 </p>
 287 <p>
 288 To print or scan values of this type, use
 289 <a class="link" href="glib-Miscellaneous-Macros.html#G-GINT16-MODIFIER:CAPS" title="G_GINT16_MODIFIER"><code class="literal">G_GINT16_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GUINT16-FORMAT:CAPS" title="G_GUINT16_FORMAT"><code class="literal">G_GUINT16_FORMAT</code></a>.
 290 </p>
 291 </div>
 292 <hr>
 293 <div class="refsect2" title="gint32">
 294 <a name="gint32"></a><h3>gint32</h3>
 295 <pre class="programlisting">typedef signed int gint32;
 296 </pre>
 297 <p>
 298 A signed integer guaranteed to be 32 bits on all platforms.
 299 Values of this type can range from <a class="link" href="glib-Limits-of-Basic-Types.html#G-MININT32:CAPS" title="G_MININT32"><span class="type">G_MININT32</span></a> (= -2,147,483,648) to
 300 <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXINT32:CAPS" title="G_MAXINT32"><span class="type">G_MAXINT32</span></a> (= 2,147,483,647).
 301 </p>
 302 <p>
 303 To print or scan values of this type, use
 304 <a class="link" href="glib-Miscellaneous-Macros.html#G-GINT32-MODIFIER:CAPS" title="G_GINT32_MODIFIER"><code class="literal">G_GINT32_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GINT32-FORMAT:CAPS" title="G_GINT32_FORMAT"><code class="literal">G_GINT32_FORMAT</code></a>.
 305 </p>
 306 </div>
 307 <hr>
 308 <div class="refsect2" title="guint32">
 309 <a name="guint32"></a><h3>guint32</h3>
 310 <pre class="programlisting">typedef unsigned int guint32;
 311 </pre>
 312 <p>
 313 An unsigned integer guaranteed to be 32 bits on all platforms.
 314 Values of this type can range from 0 to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXUINT32:CAPS" title="G_MAXUINT32"><span class="type">G_MAXUINT32</span></a> (= 4,294,967,295).
 315 </p>
 316 <p>
 317 To print or scan values of this type, use
 318 <a class="link" href="glib-Miscellaneous-Macros.html#G-GINT32-MODIFIER:CAPS" title="G_GINT32_MODIFIER"><code class="literal">G_GINT32_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GUINT32-FORMAT:CAPS" title="G_GUINT32_FORMAT"><code class="literal">G_GUINT32_FORMAT</code></a>.
 319 </p>
 320 </div>
 321 <hr>
 322 <div class="refsect2" title="G_HAVE_GINT64">
 323 <a name="G-HAVE-GINT64:CAPS"></a><h3>G_HAVE_GINT64</h3>
 324 <pre class="programlisting">#define G_HAVE_GINT64 1          /* deprecated, always true */
 325 </pre>
 326 <div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;">
 327 <h3 class="title">Warning</h3>
 328 <p><code class="literal">G_HAVE_GINT64</code> is deprecated and should not be used in newly-written code. GLib requires 64-bit integer support since version 2.0, therefore
 329 <a class="link" href="glib-Basic-Types.html#G-HAVE-GINT64:CAPS" title="G_HAVE_GINT64"><code class="literal">G_HAVE_GINT64</code></a> is <span class="emphasis"><em>always</em></span> defined.</p>
 330 </div>
 331 <p>
 332 This macro is defined if 64-bit signed and unsigned integers are available
 333 on the platform.
 334 </p>
 335 </div>
 336 <hr>
 337 <div class="refsect2" title="gint64">
 338 <a name="gint64"></a><h3>gint64</h3>
 339 <pre class="programlisting">typedef signed long gint64;
 340 </pre>
 341 <p>
 342 A signed integer guaranteed to be 64 bits on all platforms.
 343 Values of this type can range from <a class="link" href="glib-Limits-of-Basic-Types.html#G-MININT64:CAPS" title="G_MININT64"><span class="type">G_MININT64</span></a> (= -9,223,372,036,854,775,808) to
 344 <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXINT64:CAPS" title="G_MAXINT64"><span class="type">G_MAXINT64</span></a> (= 9,223,372,036,854,775,807).
 345 </p>
 346 <p>
 347 To print or scan values of this type, use
 348 <a class="link" href="glib-Miscellaneous-Macros.html#G-GINT64-MODIFIER:CAPS" title="G_GINT64_MODIFIER"><code class="literal">G_GINT64_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GINT64-FORMAT:CAPS" title="G_GINT64_FORMAT"><code class="literal">G_GINT64_FORMAT</code></a>.
 349 </p>
 350 </div>
 351 <hr>
 352 <div class="refsect2" title="guint64">
 353 <a name="guint64"></a><h3>guint64</h3>
 354 <pre class="programlisting">typedef unsigned long guint64;
 355 </pre>
 356 <p>
 357 An unsigned integer guaranteed to be 64 bits on all platforms.
 358 Values of this type can range from 0 to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXUINT64:CAPS" title="G_MAXUINT64"><span class="type">G_MAXUINT64</span></a> (= 18,446,744,073,709,551,615).
 359 </p>
 360 <p>
 361 To print or scan values of this type, use
 362 <a class="link" href="glib-Miscellaneous-Macros.html#G-GINT64-MODIFIER:CAPS" title="G_GINT64_MODIFIER"><code class="literal">G_GINT64_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GUINT64-FORMAT:CAPS" title="G_GUINT64_FORMAT"><code class="literal">G_GUINT64_FORMAT</code></a>.
 363 </p>
 364 </div>
 365 <hr>
 366 <div class="refsect2" title="G_GINT64_CONSTANT()">
 367 <a name="G-GINT64-CONSTANT:CAPS"></a><h3>G_GINT64_CONSTANT()</h3>
 368 <pre class="programlisting">#define G_GINT64_CONSTANT(val) (val##L)
 369 </pre>
 370 <p>
 371 This macro is used to insert 64-bit integer literals into the source code.
 372 </p>
 373 <div class="variablelist"><table border="0">
 374 <col align="left" valign="top">
 375 <tbody><tr>
 376 <td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
 377 <td>a literal integer value, e.g. 0x1d636b02300a7aa7.
 378 </td>
 379 </tr></tbody>
 380 </table></div>
 381 </div>
 382 <hr>
 383 <div class="refsect2" title="G_GUINT64_CONSTANT()">
 384 <a name="G-GUINT64-CONSTANT:CAPS"></a><h3>G_GUINT64_CONSTANT()</h3>
 385 <pre class="programlisting">#define G_GUINT64_CONSTANT(val) (val##UL)
 386 </pre>
 387 <p>
 388 This macro is used to insert 64-bit unsigned integer literals into the
 389 source code.
 390 </p>
 391 <div class="variablelist"><table border="0">
 392 <col align="left" valign="top">
 393 <tbody><tr>
 394 <td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
 395 <td>a literal integer value, e.g. 0x1d636b02300a7aa7U.
 396 </td>
 397 </tr></tbody>
 398 </table></div>
 399 <p class="since">Since 2.10</p>
 400 </div>
 401 <hr>
 402 <div class="refsect2" title="gfloat">
 403 <a name="gfloat"></a><h3>gfloat</h3>
 404 <pre class="programlisting">typedef float   gfloat;
 405 </pre>
 406 <p>
 407 Corresponds to the standard C <span class="type">float</span> type.
 408 Values of this type can range from -<a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXFLOAT:CAPS" title="G_MAXFLOAT"><span class="type">G_MAXFLOAT</span></a> to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXFLOAT:CAPS" title="G_MAXFLOAT"><span class="type">G_MAXFLOAT</span></a>.
 409 </p>
 410 </div>
 411 <hr>
 412 <div class="refsect2" title="gdouble">
 413 <a name="gdouble"></a><h3>gdouble</h3>
 414 <pre class="programlisting">typedef double  gdouble;
 415 </pre>
 416 <p>
 417 Corresponds to the standard C <span class="type">double</span> type.
 418 Values of this type can range from -<a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXDOUBLE:CAPS" title="G_MAXDOUBLE"><span class="type">G_MAXDOUBLE</span></a> to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXDOUBLE:CAPS" title="G_MAXDOUBLE"><span class="type">G_MAXDOUBLE</span></a>.
 419 </p>
 420 </div>
 421 <hr>
 422 <div class="refsect2" title="gsize">
 423 <a name="gsize"></a><h3>gsize</h3>
 424 <pre class="programlisting">typedef unsigned long gsize;
 425 </pre>
 426 <p>
 427 An unsigned integer type of the result of the sizeof operator, corresponding
 428 to the size_t type defined in C99. This type is wide enough to hold the numeric
 429 value of a pointer, so it is usually 32bit wide on a 32bit platform and
 430 64bit wide on a 64bit platform.
 431 Values of this type can range from 0 to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXSIZE:CAPS" title="G_MAXSIZE"><span class="type">G_MAXSIZE</span></a>.
 432 </p>
 433 <p>
 434 To print or scan values of this type, use
 435 <a class="link" href="glib-Miscellaneous-Macros.html#G-GSIZE-MODIFIER:CAPS" title="G_GSIZE_MODIFIER"><code class="literal">G_GSIZE_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GSIZE-FORMAT:CAPS" title="G_GSIZE_FORMAT"><code class="literal">G_GSIZE_FORMAT</code></a>.
 436 </p>
 437 </div>
 438 <hr>
 439 <div class="refsect2" title="gssize">
 440 <a name="gssize"></a><h3>gssize</h3>
 441 <pre class="programlisting">typedef signed long gssize;
 442 </pre>
 443 <p>
 444 A signed variant of gsize, corresponding to the ssize_t defined on most platforms.
 445 Values of this type can range from <a class="link" href="glib-Limits-of-Basic-Types.html#G-MINSSIZE:CAPS" title="G_MINSSIZE"><span class="type">G_MINSSIZE</span></a> to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXSSIZE:CAPS" title="G_MAXSSIZE"><span class="type">G_MAXSSIZE</span></a>.
 446 </p>
 447 <p>
 448 To print or scan values of this type, use
 449 <a class="link" href="glib-Miscellaneous-Macros.html#G-GSIZE-MODIFIER:CAPS" title="G_GSIZE_MODIFIER"><code class="literal">G_GSIZE_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GSSIZE-FORMAT:CAPS" title="G_GSSIZE_FORMAT"><code class="literal">G_GSSIZE_FORMAT</code></a>.
 450 </p>
 451 </div>
 452 <hr>
 453 <div class="refsect2" title="goffset">
 454 <a name="goffset"></a><h3>goffset</h3>
 455 <pre class="programlisting">typedef gint64 goffset;
 456 </pre>
 457 <p>
 458 A signed integer type that is used for file offsets, corresponding to the
 459 C99 type off64_t.
 460 Values of this type can range from <a class="link" href="glib-Limits-of-Basic-Types.html#G-MINOFFSET:CAPS" title="G_MINOFFSET"><span class="type">G_MINOFFSET</span></a> to <a class="link" href="glib-Limits-of-Basic-Types.html#G-MAXOFFSET:CAPS" title="G_MAXOFFSET"><span class="type">G_MAXOFFSET</span></a>.
 461 </p>
 462 <p>
 463 To print or scan values of this type, use
 464 <a class="link" href="glib-Miscellaneous-Macros.html#G-GOFFSET-MODIFIER:CAPS" title="G_GOFFSET_MODIFIER"><code class="literal">G_GOFFSET_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GOFFSET-FORMAT:CAPS" title="G_GOFFSET_FORMAT"><code class="literal">G_GOFFSET_FORMAT</code></a>.
 465 </p>
 466 Since: 2.14</div>
 467 <hr>
 468 <div class="refsect2" title="G_GOFFSET_CONSTANT()">
 469 <a name="G-GOFFSET-CONSTANT:CAPS"></a><h3>G_GOFFSET_CONSTANT()</h3>
 470 <pre class="programlisting">#define G_GOFFSET_CONSTANT(val) G_GINT64_CONSTANT(val)
 471 </pre>
 472 <p>
 473 This macro is used to insert <a class="link" href="glib-Basic-Types.html#goffset" title="goffset"><span class="type">goffset</span></a> 64-bit integer literals into the source code.
 474 See also <a class="link" href="glib-Basic-Types.html#G-GINT64-CONSTANT:CAPS" title="G_GINT64_CONSTANT()"><span class="type">G_GINT64_CONSTANT</span></a>.
 475 </p>
 476 <div class="variablelist"><table border="0">
 477 <col align="left" valign="top">
 478 <tbody><tr>
 479 <td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
 480 <td>a literal integer value, e.g. 0x1d636b02300a7aa7.
 481 Since: 2.20
 482 </td>
 483 </tr></tbody>
 484 </table></div>
 485 </div>
 486 <hr>
 487 <div class="refsect2" title="gintptr">
 488 <a name="gintptr"></a><h3>gintptr</h3>
 489 <pre class="programlisting">typedef signed long gintptr;
 490 </pre>
 491 <p>
 492 Corresponds to the C99 type <span class="type">intptr_t</span>, a signed integer type that
 493 can hold any pointer.
 494 </p>
 495 <p>
 496 To print or scan values of this type, use
 497 <a class="link" href="glib-Miscellaneous-Macros.html#G-GINTPTR-MODIFIER:CAPS" title="G_GINTPTR_MODIFIER"><code class="literal">G_GINTPTR_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GINTPTR-FORMAT:CAPS" title="G_GINTPTR_FORMAT"><code class="literal">G_GINTPTR_FORMAT</code></a>.
 498 </p>
 499 Since: 2.18</div>
 500 <hr>
 501 <div class="refsect2" title="guintptr">
 502 <a name="guintptr"></a><h3>guintptr</h3>
 503 <pre class="programlisting">typedef unsigned long guintptr;
 504 </pre>
 505 <p>
 506 Corresponds to the C99 type <span class="type">uintptr_t</span>, an unsigned integer type that
 507 can hold any pointer.
 508 </p>
 509 <p>
 510 To print or scan values of this type, use
 511 <a class="link" href="glib-Miscellaneous-Macros.html#G-GINTPTR-MODIFIER:CAPS" title="G_GINTPTR_MODIFIER"><code class="literal">G_GINTPTR_MODIFIER</code></a> and/or <a class="link" href="glib-Miscellaneous-Macros.html#G-GUINTPTR-FORMAT:CAPS" title="G_GUINTPTR_FORMAT"><code class="literal">G_GUINTPTR_FORMAT</code></a>.
 512 </p>
 513 Since: 2.18</div>
 514 </div>
 515 </div>
 516 <div class="footer">
 517 <hr>
 518           Generated by GTK-Doc V1.13</div>
 519 </body>
 520 </html>