glib-limits-of-basic-types.html

glid编写实例

<p>Since 2.4


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<div class="refsect2" lang="en">
<a name="id2822448"></a><h3>
<a name="G-MAXUINT8:CAPS"></a>G_MAXUINT8</h3>
<a class="indexterm" name="id2822458"></a><pre class="programlisting">#define G_MAXUINT8	((guint8) 0xff)
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<p>
The maximum value which can be held in a <a href="glib-Basic-Types.html#guint8"><span class="type">guint8</span></a>.
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<p>Since 2.4


</p>
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<div class="refsect2" lang="en">
<a name="id2822486"></a><h3>
<a name="G-MININT16:CAPS"></a>G_MININT16</h3>
<a class="indexterm" name="id2822497"></a><pre class="programlisting">#define G_MININT16	((gint16)  0x8000)
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<p>
The minimum value which can be held in a <a href="glib-Basic-Types.html#gint16"><span class="type">gint16</span></a>.
</p>
<p>Since 2.4


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<div class="refsect2" lang="en">
<a name="id2822525"></a><h3>
<a name="G-MAXINT16:CAPS"></a>G_MAXINT16</h3>
<a class="indexterm" name="id2822535"></a><pre class="programlisting">#define G_MAXINT16	((gint16)  0x7fff)
</pre>
<p>
The maximum value which can be held in a <a href="glib-Basic-Types.html#gint16"><span class="type">gint16</span></a>.
</p>
<p>Since 2.4


</p>
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<div class="refsect2" lang="en">
<a name="id2822563"></a><h3>
<a name="G-MAXUINT16:CAPS"></a>G_MAXUINT16</h3>
<a class="indexterm" name="id2822574"></a><pre class="programlisting">#define G_MAXUINT16	((guint16) 0xffff)
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<p>
The maximum value which can be held in a <a href="glib-Basic-Types.html#guint16"><span class="type">guint16</span></a>.
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<p>Since 2.4


</p>
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<div class="refsect2" lang="en">
<a name="id2822602"></a><h3>
<a name="G-MININT32:CAPS"></a>G_MININT32</h3>
<a class="indexterm" name="id2822612"></a><pre class="programlisting">#define G_MININT32	((gint32)  0x80000000)
</pre>
<p>
The minimum value which can be held in a <a href="glib-Basic-Types.html#gint32"><span class="type">gint32</span></a>.
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<p>Since 2.4


</p>
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<div class="refsect2" lang="en">
<a name="id2822640"></a><h3>
<a name="G-MAXINT32:CAPS"></a>G_MAXINT32</h3>
<a class="indexterm" name="id2822651"></a><pre class="programlisting">#define G_MAXINT32	((gint32)  0x7fffffff)
</pre>
<p>
The maximum value which can be held in a <a href="glib-Basic-Types.html#gint32"><span class="type">gint32</span></a>.
</p>
<p>Since 2.4


</p>
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<hr>
<div class="refsect2" lang="en">
<a name="id2822679"></a><h3>
<a name="G-MAXUINT32:CAPS"></a>G_MAXUINT32</h3>
<a class="indexterm" name="id2822689"></a><pre class="programlisting">#define G_MAXUINT32	((guint32) 0xffffffff)
</pre>
<p>
The maximum value which can be held in a <a href="glib-Basic-Types.html#guint32"><span class="type">guint32</span></a>.
</p>
<p>Since 2.4


</p>
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<div class="refsect2" lang="en">
<a name="id2822717"></a><h3>
<a name="G-MININT64:CAPS"></a>G_MININT64</h3>
<a class="indexterm" name="id2822728"></a><pre class="programlisting">#define G_MININT64	G_GINT64_CONSTANT(0x8000000000000000)
</pre>
<p>
The minimum value which can be held in a <a href="glib-Basic-Types.html#gint64"><span class="type">gint64</span></a>.
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<div class="refsect2" lang="en">
<a name="id2822751"></a><h3>
<a name="G-MAXINT64:CAPS"></a>G_MAXINT64</h3>
<a class="indexterm" name="id2822762"></a><pre class="programlisting">#define G_MAXINT64	G_GINT64_CONSTANT(0x7fffffffffffffff)
</pre>
<p>
The maximum value which can be held in a <a href="glib-Basic-Types.html#gint64"><span class="type">gint64</span></a>.
</p>
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<div class="refsect2" lang="en">
<a name="id2822786"></a><h3>
<a name="G-MAXUINT64:CAPS"></a>G_MAXUINT64</h3>
<a class="indexterm" name="id2822796"></a><pre class="programlisting">#define G_MAXUINT64	G_GINT64_CONSTANT(0xffffffffffffffffU)
</pre>
<p>
The maximum value which can be held in a <a href="glib-Basic-Types.html#guint64"><span class="type">guint64</span></a>.
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<div class="refsect2" lang="en">
<a name="id2822820"></a><h3>
<a name="G-MAXSIZE:CAPS"></a>G_MAXSIZE</h3>
<a class="indexterm" name="id2822830"></a><pre class="programlisting">#define G_MAXSIZE	G_MAXUINT
</pre>
<p>
The maximum value which can be held in a <a href="glib-Basic-Types.html#gsize"><span class="type">gsize</span></a>.
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<p>Since 2.4


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<div class="refsect2" lang="en">
<a name="id2822858"></a><h3>
<a name="G-MINFLOAT:CAPS"></a>G_MINFLOAT</h3>
<a class="indexterm" name="id2822868"></a><pre class="programlisting">#define G_MINFLOAT	FLT_MIN
</pre>
<p>
The minimum positive value which can be held in a <a href="glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a>.
</p>
<p>
If you are interested in the smallest value which can be held in a <a href="glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a>,
use -G_MAX_FLOAT.
</p>
</div>
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<div class="refsect2" lang="en">
<a name="id2822904"></a><h3>
<a name="G-MAXFLOAT:CAPS"></a>G_MAXFLOAT</h3>
<a class="indexterm" name="id2822915"></a><pre class="programlisting">#define G_MAXFLOAT	FLT_MAX
</pre>
<p>
The maximum value which can be held in a <a href="glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a>.
</p>
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<div class="refsect2" lang="en">
<a name="id2822939"></a><h3>
<a name="G-MINDOUBLE:CAPS"></a>G_MINDOUBLE</h3>
<a class="indexterm" name="id2822949"></a><pre class="programlisting">#define G_MINDOUBLE	DBL_MIN
</pre>
<p>
The minimum positive value which can be held in a <a href="glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a>.
</p>
<p>
If you are interested in the smallest value which can be held in a <a href="glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a>,
use -G_MAXDOUBLE.
</p>
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<hr>
<div class="refsect2" lang="en">
<a name="id2822985"></a><h3>
<a name="G-MAXDOUBLE:CAPS"></a>G_MAXDOUBLE</h3>
<a class="indexterm" name="id2822996"></a><pre class="programlisting">#define G_MAXDOUBLE	DBL_MAX
</pre>
<p>
The maximum value which can be held in a <a href="glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a>.
</p>
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