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<title>clCreateKernel</title>
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<div class="refentry">
<a id="id-1"></a>
<div class="titlepage"></div>
<div xmlns="" class="refnamediv">
<a xmlns="http://www.w3.org/1999/xhtml" id="clCreateKernel"></a>
<h1>
clCreateKernel
</h1>
<p>
Creates a kernel object.
</p>
</div>
<div class="refsynopsisdiv">
<h2></h2>
<div class="funcsynopsis">
<table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
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<td>
<code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
<a class="link" href="abstractDataTypes.html" target="pagedisplay">cl_kernel</a> <strong class="fsfunc">clCreateKernel</strong>
(</code>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_program</a>  <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">program</var>, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">char</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*kernel_name</var>, </td>
</tr>
<tr valign="top">
<td> </td>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">cl_int</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*errcode_ret</var><code>)</code></td>
</tr>
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</div>
<div class="refsect1">
<a id="parameters"></a>
<h2>Parameters</h2>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term"> <code class="varname"> program </code> </span>
</dt>
<dd>
<p>
A program object with a successfully built executable.
</p>
</dd>
<dt>
<span class="term"> <code class="varname"> kernel_name </code> </span>
</dt>
<dd>
<p>
A function name in the program declared with the
<a class="citerefentry" href="functionQualifiers.html"><span class="citerefentry"><span class="refentrytitle">__kernel</span></span></a>
qualifier.
</p>
</dd>
<dt>
<span class="term"> <code class="varname"> errcode_ret </code> </span>
</dt>
<dd>
<p>
Returns an appropriate error code. If
<code class="varname">errcode_ret</code> is NULL, no error code is returned.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1">
<a id="notes"></a>
<h2>Notes</h2>
<p>
A kernel is a function declared in a program. A kernel is identified by the
<a class="citerefentry" href="functionQualifiers.html"><span class="citerefentry"><span class="refentrytitle">__kernel</span></span></a>
qualifier applied to any function in a program. A kernel object encapsulates the specific
<code class="constant">__kernel</code> function declared in a program and the argument values
to be used when executing this <code class="constant">__kernel</code> function.
</p>
</div>
<div class="refsect1">
<a id="errors"></a>
<h2>Errors</h2>
<p>
<code class="function">clCreateKernel</code> returns a valid non-zero kernel object and
<code class="varname">errcode_ret</code> is set to <span class="errorname">CL_SUCCESS</span> if the
kernel object is created successfully. Otherwise, it returns a NULL value with one
of the following error values returned in <code class="varname">errcode_ret</code>:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_PROGRAM</span> if <code class="varname">program</code>
is not a valid program object.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_PROGRAM_EXECUTABLE</span> if there is no
successfully built executable for <code class="varname">program</code>.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_KERNEL_NAME</span> if <code class="varname">kernel_name</code>
is not found in <code class="varname">program</code>.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_KERNEL_DEFINITION</span> if the function definition for
<code class="constant">__kernel</code> function given by <code class="varname">kernel_name</code> such
as the number of arguments, the argument types are not the same for all devices for which the
<code class="varname">program</code> executable has been built.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">kernel_name</code> is NULL.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_RESOURCES</span> if there is a failure to allocate
resources required by the OpenCL implementation on the device.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_HOST_MEMORY</span> if there is a failure to allocate
resources required by the OpenCL implementation on the host.
</li>
</ul>
</div>
</div>
<div class="refsect1">
<a id="specification"></a>
<h2>Specification</h2>
<p>
<img src="pdficon_small1.gif" />
<a href="https://www.khronos.org/registry/cl/specs/opencl-2.1.pdf#page=221" target="OpenCL Spec">OpenCL Specification</a>
</p>
</div>
<div class="refsect1">
<a id="seealso"></a>
<h2>Also see</h2>
<p>
<a class="citerefentry" href="clCreateKernelsInProgram.html"><span class="citerefentry"><span class="refentrytitle">clCreateKernelsInProgram</span></span></a>,
<a class="citerefentry" href="clRetainKernel.html"><span class="citerefentry"><span class="refentrytitle">clRetainKernel</span></span></a>,
<a class="citerefentry" href="clReleaseKernel.html"><span class="citerefentry"><span class="refentrytitle">clReleaseKernel</span></span></a>,
<a class="citerefentry" href="clSetKernelArg.html"><span class="citerefentry"><span class="refentrytitle">clSetKernelArg</span></span></a>,
<a class="citerefentry" href="clGetKernelInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetKernelInfo</span></span></a>,
<a class="citerefentry" href="clGetKernelWorkGroupInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetKernelWorkGroupInfo</span></span></a>
</p>
</div>
<div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2015 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
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