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<a href="#liboil-liboilimpl-unstable.description" class="shortcut">Description</a>
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<div class="refentry" title="OilFunctionImpl">
<a name="liboil-liboilimpl-unstable"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="liboil-liboilimpl-unstable.top_of_page"></a>OilFunctionImpl</span></h2>
<p>OilFunctionImpl — Functions for manipulating function implementations.</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv" title="Synopsis">
<a name="liboil-liboilimpl-unstable.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
<a class="link" href="liboil-liboilimpl-unstable.html#OilFunctionImpl" title="OilFunctionImpl">OilFunctionImpl</a>;
<a class="link" href="liboil-liboilimpl-unstable.html#OilFunctionImpl" title="OilFunctionImpl">OilFunctionImpl</a> * <a class="link" href="liboil-liboilimpl-unstable.html#oil-impl-get-by-index" title="oil_impl_get_by_index ()">oil_impl_get_by_index</a> (int i);
int <a class="link" href="liboil-liboilimpl-unstable.html#oil-impl-is-runnable" title="oil_impl_is_runnable ()">oil_impl_is_runnable</a> (<a class="link" href="liboil-liboilimpl-unstable.html#OilFunctionImpl" title="OilFunctionImpl">OilFunctionImpl</a> *impl);
enum <a class="link" href="liboil-liboilimpl-unstable.html#OilImplFlag" title="enum OilImplFlag">OilImplFlag</a>;
#define <a class="link" href="liboil-liboilimpl-unstable.html#OIL-CPU-FLAG-MASK--CAPS" title="OIL_CPU_FLAG_MASK">OIL_CPU_FLAG_MASK</a>
#define <a class="link" href="liboil-liboilimpl-unstable.html#OIL-DEFINE-IMPL-FULL--CAPS" title="OIL_DEFINE_IMPL_FULL()">OIL_DEFINE_IMPL_FULL</a> (function,klass,flags)
#define <a class="link" href="liboil-liboilimpl-unstable.html#OIL-DEFINE-IMPL--CAPS" title="OIL_DEFINE_IMPL()">OIL_DEFINE_IMPL</a> (function,klass)
#define <a class="link" href="liboil-liboilimpl-unstable.html#OIL-DEFINE-IMPL-REF--CAPS" title="OIL_DEFINE_IMPL_REF()">OIL_DEFINE_IMPL_REF</a> (function,klass)
#define <a class="link" href="liboil-liboilimpl-unstable.html#OIL-DEFINE-IMPL-ASM--CAPS" title="OIL_DEFINE_IMPL_ASM()">OIL_DEFINE_IMPL_ASM</a> (function,klass)
#define <a class="link" href="liboil-liboilimpl-unstable.html#OIL-DEFINE-IMPL-DEPENDS--CAPS" title="OIL_DEFINE_IMPL_DEPENDS()">OIL_DEFINE_IMPL_DEPENDS</a> (function,klass,...)
</pre>
</div>
<div class="refsect1" title="Description">
<a name="liboil-liboilimpl-unstable.description"></a><h2>Description</h2>
<p>
</p>
<p>
</p>
</div>
<div class="refsect1" title="Details">
<a name="liboil-liboilimpl-unstable.details"></a><h2>Details</h2>
<div class="refsect2" title="OilFunctionImpl">
<a name="OilFunctionImpl"></a><h3>OilFunctionImpl</h3>
<pre class="programlisting">typedef struct {
} OilFunctionImpl;
</pre>
<p>
An opaque structure representing a function implementation.</p>
<p>
</p>
</div>
<hr>
<div class="refsect2" title="oil_impl_get_by_index ()">
<a name="oil-impl-get-by-index"></a><h3>oil_impl_get_by_index ()</h3>
<pre class="programlisting"><a class="link" href="liboil-liboilimpl-unstable.html#OilFunctionImpl" title="OilFunctionImpl">OilFunctionImpl</a> * oil_impl_get_by_index (int i);</pre>
<p>
Returns a pointer to the function implementation with index <em class="parameter"><code>i</code></em>.</p>
<p>
</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> index
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a pointer to a function implementation structure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="oil_impl_is_runnable ()">
<a name="oil-impl-is-runnable"></a><h3>oil_impl_is_runnable ()</h3>
<pre class="programlisting">int oil_impl_is_runnable (<a class="link" href="liboil-liboilimpl-unstable.html#OilFunctionImpl" title="OilFunctionImpl">OilFunctionImpl</a> *impl);</pre>
<p>
Determines whether the function implementation given by <em class="parameter"><code>impl</code></em>
can be executed by the current CPU.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>impl</code></em> :</span></p></td>
<td> an <em class="parameter"><code>OilFunctionImpl</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> 1 if the implementation can be executed, otherwise 0
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="enum OilImplFlag">
<a name="OilImplFlag"></a><h3>enum OilImplFlag</h3>
<pre class="programlisting">typedef enum {
OIL_IMPL_FLAG_REF = (1<<0),
OIL_IMPL_FLAG_OPT = (1<<1),
OIL_IMPL_FLAG_ASM = (1<<2),
OIL_IMPL_FLAG_DISABLED = (1<<3),
OIL_IMPL_FLAG_CMOV = (1<<16),
OIL_IMPL_FLAG_MMX = (1<<17),
OIL_IMPL_FLAG_SSE = (1<<18),
OIL_IMPL_FLAG_MMXEXT = (1<<19),
OIL_IMPL_FLAG_SSE2 = (1<<20),
OIL_IMPL_FLAG_3DNOW = (1<<21),
OIL_IMPL_FLAG_3DNOWEXT = (1<<22),
OIL_IMPL_FLAG_SSE3 = (1<<23),
OIL_IMPL_FLAG_ALTIVEC = (1<<24),
OIL_IMPL_FLAG_EDSP = (1<<25),
OIL_IMPL_FLAG_ARM6 = (1<<26),
OIL_IMPL_FLAG_VFP = (1<<27),
OIL_IMPL_FLAG_SSSE3 = (1<<28)
} OilImplFlag;
</pre>
<p>
Implementation flags.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_REF</code></em>: is the reference implementation for the class.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_OPT</code></em>: was compiled with alternate CFLAGS as specified
by --enable-alternate-optimization.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_ASM</code></em>: is written in assembly code.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_DISABLED</code></em>: is disabled. This can be set either in the
source code or during library initialization.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_CMOV</code></em>: uses the i386 instruction cmov or its variants.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_MMX</code></em>: uses MMX instructions.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_SSE</code></em>: uses SSE instructions.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_MMXEXT</code></em>: uses AMD's extended MMX instructions. These
are a subset of what Intel calls SSE2. If an implementation uses
only AMD's extended MMX instructions, it should set this flag, and
not <em class="parameter"><code>OIL_IMPL_FLAG_SSE2</code></em>.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_SSE2</code></em>: uses SSE2 instructions. This flag implies
<em class="parameter"><code>OIL_IMPL_FLAG_SSE</code></em> and <em class="parameter"><code>OIL_IMPL_FLAG_MMXEXT</code></em>.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_3DNOW</code></em>: uses 3DNow! instructions.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_3DNOWEXT</code></em>: uses extended 3DNow! instructions.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_SSE3</code></em>: uses SSE3 instructions. This flag implies
<em class="parameter"><code>OIL_IMPL_FLAG_SSE2</code></em>.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_SSSE3</code></em>: uses SSSE3 instructions. This flag implies
<em class="parameter"><code>OIL_IMPL_FLAG_SSE3</code></em>.
</p>
<p>
<em class="parameter"><code>OIL_IMPL_FLAG_ALTIVEC</code></em>: uses Altivec instructions.</p>
<p>
</p>
</div>
<hr>
<div class="refsect2" title="OIL_CPU_FLAG_MASK">
<a name="OIL-CPU-FLAG-MASK--CAPS"></a><h3>OIL_CPU_FLAG_MASK</h3>
<pre class="programlisting">#define OIL_CPU_FLAG_MASK 0xffff0000
</pre>
<p>
Mask describing which bits in <a class="link" href="liboil-liboilimpl-unstable.html#OilImplFlag" title="enum OilImplFlag"><span class="type">OilImplFlag</span></a> depend on the current
CPU.</p>
<p>
</p>
</div>
<hr>
<div class="refsect2" title="OIL_DEFINE_IMPL_FULL()">
<a name="OIL-DEFINE-IMPL-FULL--CAPS"></a><h3>OIL_DEFINE_IMPL_FULL()</h3>
<pre class="programlisting">#define OIL_DEFINE_IMPL_FULL(function,klass,flags)</pre>
<p>
Defines a <a class="link" href="liboil-liboilimpl-unstable.html#OilFunctionImpl" title="OilFunctionImpl"><span class="type">OilFunctionImpl</span></a> structure for the function <em class="parameter"><code>function</code></em>
and class <em class="parameter"><code>klass</code></em>. CPU-dependent flags in <em class="parameter"><code>flags</code></em> will indicate
that this implementation requires the given CPU flags.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>function</code></em> :</span></p></td>
<td> name of function
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>klass</code></em> :</span></p></td>
<td> name of class to declare (without oil_ prefix)
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td>
<td> implementation flags and CPU requirements
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="OIL_DEFINE_IMPL()">
<a name="OIL-DEFINE-IMPL--CAPS"></a><h3>OIL_DEFINE_IMPL()</h3>
<pre class="programlisting">#define OIL_DEFINE_IMPL(function,klass)</pre>
<p>
Shorthand for defining a C implementation. See <a class="link" href="liboil-liboilimpl-unstable.html#OIL-DEFINE-IMPL-FULL--CAPS" title="OIL_DEFINE_IMPL_FULL()"><code class="function">OIL_DEFINE_IMPL_FULL()</code></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>function</code></em> :</span></p></td>
<td> name of function
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>klass</code></em> :</span></p></td>
<td> name of class to declare (without oil_ prefix)
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="OIL_DEFINE_IMPL_REF()">
<a name="OIL-DEFINE-IMPL-REF--CAPS"></a><h3>OIL_DEFINE_IMPL_REF()</h3>
<pre class="programlisting">#define OIL_DEFINE_IMPL_REF(function,klass)</pre>
<p>
Shorthand for defining a reference implementation. See <a class="link" href="liboil-liboilimpl-unstable.html#OIL-DEFINE-IMPL-FULL--CAPS" title="OIL_DEFINE_IMPL_FULL()"><code class="function">OIL_DEFINE_IMPL_FULL()</code></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>function</code></em> :</span></p></td>
<td> name of function
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>klass</code></em> :</span></p></td>
<td> name of class to declare (without oil_ prefix)
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="OIL_DEFINE_IMPL_ASM()">
<a name="OIL-DEFINE-IMPL-ASM--CAPS"></a><h3>OIL_DEFINE_IMPL_ASM()</h3>
<pre class="programlisting">#define OIL_DEFINE_IMPL_ASM(function,klass)</pre>
<p>
Shorthand for defining an implementation written in inline
assembly code. See <a class="link" href="liboil-liboilimpl-unstable.html#OIL-DEFINE-IMPL-FULL--CAPS" title="OIL_DEFINE_IMPL_FULL()"><code class="function">OIL_DEFINE_IMPL_FULL()</code></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>function</code></em> :</span></p></td>
<td> name of function
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>klass</code></em> :</span></p></td>
<td> name of class to declare (without oil_ prefix)
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="OIL_DEFINE_IMPL_DEPENDS()">
<a name="OIL-DEFINE-IMPL-DEPENDS--CAPS"></a><h3>OIL_DEFINE_IMPL_DEPENDS()</h3>
<pre class="programlisting">#define OIL_DEFINE_IMPL_DEPENDS(function,klass,...)</pre>
<p>
Shorthand for defining an implementation that uses another Liboil
function class. This is not currently used. See
<a class="link" href="liboil-liboilimpl-unstable.html#OIL-DEFINE-IMPL-FULL--CAPS" title="OIL_DEFINE_IMPL_FULL()"><code class="function">OIL_DEFINE_IMPL_FULL()</code></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>function</code></em> :</span></p></td>
<td> name of function
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>klass</code></em> :</span></p></td>
<td> name of class to declare (without oil_ prefix)
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td>
<td> other classes this implementation uses
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
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