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<a href="#id2595502" class="shortcut">Description</a></nobr></td></tr>
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<div class="refentry" lang="en">
<a name="gst-plugins-base-libs-gstfloatcast"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2>
<a name="id2595398"></a><span class="refentrytitle">gstfloatcast</span>
</h2>
<p>gstfloatcast — Floating point platform independence macros</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">
#include <gst/floatcast/floatcast.h>
#define <a href="gst-plugins-base-libs-gstfloatcast.html#GDOUBLE-FROM-BE:CAPS">GDOUBLE_FROM_BE</a> (val)
#define <a href="gst-plugins-base-libs-gstfloatcast.html#GDOUBLE-FROM-LE:CAPS">GDOUBLE_FROM_LE</a> (val)
#define <a href="gst-plugins-base-libs-gstfloatcast.html#GDOUBLE-TO-BE:CAPS">GDOUBLE_TO_BE</a> (val)
#define <a href="gst-plugins-base-libs-gstfloatcast.html#GDOUBLE-TO-LE:CAPS">GDOUBLE_TO_LE</a> (val)
#define <a href="gst-plugins-base-libs-gstfloatcast.html#GFLOAT-FROM-BE:CAPS">GFLOAT_FROM_BE</a> (val)
#define <a href="gst-plugins-base-libs-gstfloatcast.html#GFLOAT-FROM-LE:CAPS">GFLOAT_FROM_LE</a> (val)
#define <a href="gst-plugins-base-libs-gstfloatcast.html#GFLOAT-TO-BE:CAPS">GFLOAT_TO_BE</a> (val)
#define <a href="gst-plugins-base-libs-gstfloatcast.html#GFLOAT-TO-LE:CAPS">GFLOAT_TO_LE</a> (val)
#define <a href="gst-plugins-base-libs-gstfloatcast.html#gst-cast-double">gst_cast_double</a> (x)
#define <a href="gst-plugins-base-libs-gstfloatcast.html#gst-cast-float">gst_cast_float</a> (x)
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id2595502"></a><h2>Description</h2>
<p>
The floatcast.h header file contains a couple of convenience macros for
floating point numbers.
</p>
<p>
If you include this header, your application or library must link against
libm (for maths.h support).
</p>
<p>
For optimal results, your application's or library's build
system should check whether the C99 functions lrint and lrintf are supported
and define the preprocessor symbols HAVE_LRINT and HAVE_LRINTF if so. If
you are using autoconf, you can do this by using the AC_C99_FUNC_LRINT and
AC_C99_FUNC_LRINTF checks in your configure.ac or configure.in file and
including your application's config.h header before you include floatcast.h.</p>
<p>
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2595546"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="id2595556"></a><h3>
<a name="GDOUBLE-FROM-BE:CAPS"></a>GDOUBLE_FROM_BE()</h3>
<a class="indexterm" name="id2595569"></a><pre class="programlisting">#define GDOUBLE_FROM_BE(val) (GDOUBLE_TO_BE (val))
</pre>
<p>
Convert 64-bit floating point value (double) from big endian byte order
into native byte order.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>val</code></em> :</span></td>
<td> value
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2595608"></a><h3>
<a name="GDOUBLE-FROM-LE:CAPS"></a>GDOUBLE_FROM_LE()</h3>
<a class="indexterm" name="id2595621"></a><pre class="programlisting">#define GDOUBLE_FROM_LE(val) (GDOUBLE_TO_LE (val))
</pre>
<p>
Convert 64-bit floating point value (double) from little endian byte order
into native byte order.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>val</code></em> :</span></td>
<td> value
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2595659"></a><h3>
<a name="GDOUBLE-TO-BE:CAPS"></a>GDOUBLE_TO_BE()</h3>
<a class="indexterm" name="id2595671"></a><pre class="programlisting">#define GDOUBLE_TO_BE(val)</pre>
<p>
Convert 64-bit floating point value (double) from native byte order into
big endian byte order.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>val</code></em> :</span></td>
<td> value
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2595710"></a><h3>
<a name="GDOUBLE-TO-LE:CAPS"></a>GDOUBLE_TO_LE()</h3>
<a class="indexterm" name="id2595722"></a><pre class="programlisting">#define GDOUBLE_TO_LE(val)</pre>
<p>
Convert 64-bit floating point value (double) from native byte order into
little endian byte order.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>val</code></em> :</span></td>
<td> value
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2595760"></a><h3>
<a name="GFLOAT-FROM-BE:CAPS"></a>GFLOAT_FROM_BE()</h3>
<a class="indexterm" name="id2595773"></a><pre class="programlisting">#define GFLOAT_FROM_BE(val) (GFLOAT_TO_BE (val))
</pre>
<p>
Convert 32-bit floating point value (float) from big endian byte order
into native byte order.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>val</code></em> :</span></td>
<td> value
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2595811"></a><h3>
<a name="GFLOAT-FROM-LE:CAPS"></a>GFLOAT_FROM_LE()</h3>
<a class="indexterm" name="id2595824"></a><pre class="programlisting">#define GFLOAT_FROM_LE(val) (GFLOAT_TO_LE (val))
</pre>
<p>
Convert 32-bit floating point value (float) from little endian byte order
into native byte order.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>val</code></em> :</span></td>
<td> value
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2595862"></a><h3>
<a name="GFLOAT-TO-BE:CAPS"></a>GFLOAT_TO_BE()</h3>
<a class="indexterm" name="id2595875"></a><pre class="programlisting">#define GFLOAT_TO_BE(val)</pre>
<p>
Convert 32-bit floating point value (float) from native byte order into
big endian byte order.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>val</code></em> :</span></td>
<td> value
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2595913"></a><h3>
<a name="GFLOAT-TO-LE:CAPS"></a>GFLOAT_TO_LE()</h3>
<a class="indexterm" name="id2595925"></a><pre class="programlisting">#define GFLOAT_TO_LE(val)</pre>
<p>
Convert 32-bit floating point value (float) from native byte order into
little endian byte order.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>val</code></em> :</span></td>
<td> value
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2595964"></a><h3>
<a name="gst-cast-double"></a>gst_cast_double()</h3>
<a class="indexterm" name="id2595976"></a><pre class="programlisting">#define gst_cast_double(x)</pre>
<p>
Casts a 64-bit floating point value (double) to an integer without bias.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>x</code></em> :</span></td>
<td> input value
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2596014"></a><h3>
<a name="gst-cast-float"></a>gst_cast_float()</h3>
<a class="indexterm" name="id2596027"></a><pre class="programlisting">#define gst_cast_float(x)</pre>
<p>
Casts a 32-bit floating point value (float) to an integer without bias.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>x</code></em> :</span></td>
<td> input value
</td>
</tr></tbody>
</table></div>
</div>
</div>
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