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| <title>isnan</title> |
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| <a id="idm5795744"></a> |
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| <div xmlns="" class="refnamediv"> |
| <a xmlns="http://www.w3.org/1999/xhtml" id="isnan"></a> |
| <h1>isnan</h1> |
| <p> |
| Test for a NaN. |
| </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="scalarDataTypes.html" target="pagedisplay">int</a> |
| <strong class="fsfunc"> |
| isnan |
| </strong> |
| (</code> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">float</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam"></var><code>)</code></td> |
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| <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef"> |
| <a class="link" href="vectorDataTypes.html" target="pagedisplay">int<em class="replaceable"><code>n</code></em></a> |
| <strong class="fsfunc"> |
| isnan |
| </strong> |
| (</code> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float<em class="replaceable"><code>n</code></em></a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam"></var><code>)</code></td> |
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| <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"> |
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| <a class="link" href="scalarDataTypes.html" target="pagedisplay">int</a> |
| <strong class="fsfunc"> |
| isnan |
| </strong> |
| (</code> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">double</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam"></var><code>)</code></td> |
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| <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef"> |
| <a class="link" href="vectorDataTypes.html" target="pagedisplay">long<em class="replaceable"><code>n</code></em></a> |
| <strong class="fsfunc"> |
| isnan |
| </strong> |
| (</code> |
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| </div> |
| </div> |
| <div class="refsect2"> |
| <a id="double"></a> |
| <h3></h3> |
| <div class="informaltable"> |
| <table border="0"> |
| <colgroup> |
| <col align="left" class="col1" /> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td align="left"> |
| <span class="type"><a class="link" href="scalarDataTypes.html" target="pagedisplay">int</a></span> <code class="function">isnan</code> (<span class="type"><a class="link" href="scalarDataTypes.html" target="_top">half</a></span>) // if half extension enabled |
| |
| <span class="type"><a class="link" href="vectorDataTypes.html" target="pagedisplay">short<em class="replaceable"><code>n</code></em></a></span> <code class="function">isnan</code> (<span class="type"><a class="link" href="vectorDataTypes.html" target="_top">half<em class="replaceable"><code>n</code></em></a></span>) // if half extension enabled |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="description"></a> |
| <h2>Description</h2> |
| <p> |
| Test for NaN. |
| </p> |
| <p> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="notes"></a> |
| <h2>Notes</h2> |
| <p> |
| If an implementation extends this specification to support IEEE-754 flags or |
| exceptions, then all built-in relational functions shall proceed without raising the |
| <code class="varname">invalid</code> floating-point exception when one or more of the operands |
| are NaNs. |
| </p> |
| <p> |
| The built-in relational functions are extended with |
| <a class="citerefentry" href="cl_khr_fp16.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_fp16</span></span></a> to |
| include appropriate versions of functions that take <span class="type">half</span>, and |
| <span class="type">half{2|3|4|8|16}</span> as arguments and return values. |
| </p> |
| <p> |
| The function returns a 0 if the specified relation is <code class="constant">false</code> and a 1 |
| if the specified relation is <code class="constant">true</code> for scalar argument types. These |
| functions shall return a 0 if the specified relation is <code class="constant">false</code> and a - |
| 1 (i.e. all bits set) if the specified relation is <code class="constant">true</code> for vector |
| argument types. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="specification"></a> |
| <h2>Specification</h2> |
| <p> |
| <img src="pdficon_small1.gif" /> |
| |
| <a href="http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf#page=264" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| <a class="citerefentry" href="relationalFunctions.html"><span class="citerefentry"><span class="refentrytitle">Relational Functions</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 © 2007-2011 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, |
| distribute, sublicense, and/or sell copies of the Materials, and to |
| permit persons to whom the Materials are furnished to do so, subject to |
| the condition that this copyright notice and permission notice shall be included |
| in all copies or substantial portions of the Materials. |
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