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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
+<title>NeL: NLMISC::CCpuInfo___ struct Reference</title>
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+<h1>NLMISC::CCpuInfo___ Struct Reference</h1><code>#include &lt;<a class="el" href="a05616.html">cpu_info.h</a>&gt;</code>
+<p>
+<hr><a name="_details"></a><h2>Detailed Description</h2>
+This helps to know wether cpu has some features such as mmx, sse ... <dl compact><dt><b>Author:</b></dt><dd>Nicolas Vizerie <p>
+Nevrax France </dd></dl>
+<dl compact><dt><b>Date:</b></dt><dd>2001 </dd></dl>
+
+<p>
+
+<p>
+Definition at line <a class="el" href="a05616.html#l00041">41</a> of file <a class="el" href="a05616.html">cpu_info.h</a>.<table border=0 cellpadding=0 cellspacing=0>
+<tr><td></td></tr>
+<tr><td colspan=2><br><h2>Static Public Member Functions</h2></td></tr>
+<tr><td class="memItemLeft" nowrap align=right valign=top>bool&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02421.html#NLMISC_1_1CCpuInfo______e0">hasCPUID</a> (void)</td></tr>
+
+<tr><td class="memItemLeft" nowrap align=right valign=top>bool&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02421.html#NLMISC_1_1CCpuInfo______e1">hasMMX</a> (void)</td></tr>
+
+<tr><td class="memItemLeft" nowrap align=right valign=top>bool&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a02421.html#NLMISC_1_1CCpuInfo______e2">hasSSE</a> (void)</td></tr>
+
+</table>
+<hr><h2>Member Function Documentation</h2>
+<a class="anchor" name="NLMISC_1_1CCpuInfo______e0" doxytag="NLMISC::CCpuInfo___::hasCPUID" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> bool NLMISC::CCpuInfo___::hasCPUID </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">void&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap><code> [static]</code></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+test wether the cpuid instruction is supported (always false on non intel architectures)
+<p>
+Definition at line <a class="el" href="a05615.html#l00108">108</a> of file <a class="el" href="a05615.html">cpu_info.cpp</a>.
+<p>
+References <a class="el" href="a05981.html#l00100">uint32</a>.
+<p>
+<div class="fragment"><pre>00109 {
+00110 <span class="preprocessor"> #ifdef NL_OS_WINDOWS</span>
+00111 <span class="preprocessor"></span> <a class="code" href="a04558.html#a11">uint32</a> result;
+00112 __asm
+00113 {
+00114 pushad
+00115 pushfd
+00116 <span class="comment">// If ID bit of EFLAGS can change, then cpuid is available</span>
+00117 pushfd
+00118 pop eax <span class="comment">// Get EFLAG</span>
+00119 mov ecx,eax
+00120 xor eax,0x200000 <span class="comment">// Flip ID bit</span>
+00121 push eax
+00122 popfd <span class="comment">// Write EFLAGS</span>
+00123 pushfd
+00124 pop eax <span class="comment">// read back EFLAG</span>
+00125 xor eax,ecx
+00126 je noCpuid <span class="comment">// no flip -&gt; no CPUID instr.</span>
+00127
+00128 popfd <span class="comment">// restore state</span>
+00129 popad
+00130 mov result, 1
+00131 jmp CPUIDPresent
+00132
+00133 noCpuid:
+00134 popfd <span class="comment">// restore state</span>
+00135 popad
+00136 mov result, 0
+00137 CPUIDPresent:
+00138 }
+00139 <span class="keywordflow">return</span> result == 1;
+00140 <span class="preprocessor"> #else</span>
+00141 <span class="preprocessor"></span> <span class="keywordflow">return</span> <span class="keyword">false</span>;
+00142 <span class="preprocessor"> #endif</span>
+00143 <span class="preprocessor"></span>}
+</pre></div> </td>
+ </tr>
+</table>
+<a class="anchor" name="NLMISC_1_1CCpuInfo______e1" doxytag="NLMISC::CCpuInfo___::hasMMX" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> bool NLMISC::CCpuInfo___::hasMMX </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">void&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap><code> [static]</code></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+helps to know wether the processor features mmx instruction set This is initialized at started, so its fast (always false on not 0x86 architecture ...)
+<p>
+Definition at line <a class="el" href="a05615.html#l00144">144</a> of file <a class="el" href="a05615.html">cpu_info.cpp</a>.
+<p>
+References <a class="el" href="a05615.html#l00105">NLMISC::HasMMX</a>.
+<p>
+<div class="fragment"><pre>00144 { <span class="keywordflow">return</span> <a class="code" href="a05378.html#a5">HasMMX</a>; }
+</pre></div> </td>
+ </tr>
+</table>
+<a class="anchor" name="NLMISC_1_1CCpuInfo______e2" doxytag="NLMISC::CCpuInfo___::hasSSE" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top"> bool NLMISC::CCpuInfo___::hasSSE </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">void&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap><code> [static]</code></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+helps to know wether the processor has streaming SIMD instructions (the OS must supports it) This is initialized at started, so its fast (always false on not 0x86 architecture ...)
+<p>
+Definition at line <a class="el" href="a05615.html#l00145">145</a> of file <a class="el" href="a05615.html">cpu_info.cpp</a>.
+<p>
+References <a class="el" href="a05615.html#l00106">NLMISC::HasSSE</a>.
+<p>
+<div class="fragment"><pre>00145 { <span class="keywordflow">return</span> <a class="code" href="a05378.html#a6">HasSSE</a>; }
+</pre></div> </td>
+ </tr>
+</table>
+<hr>The documentation for this struct was generated from the following files:<ul>
+<li><a class="el" href="a05616.html">cpu_info.h</a><li><a class="el" href="a05615.html">cpu_info.cpp</a></ul>
+<hr size="1"><address style="align: right;"><small>Generated on Tue Mar 16 13:07:09 2004 for NeL by
+<a href="http://www.doxygen.org/index.html">
+<img src="doxygen.png" alt="doxygen" align="middle" border=0 >
+</a>1.3.6 </small></address>
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+</html>