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194 lines
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>GLM_GTX_fast_square_root: Fast square root functions</title>
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<!-- Generated by Doxygen 1.7.5.1 -->
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<div id="navrow1" class="tabs">
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<ul class="tablist">
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<li><a href="index.html"><span>Main Page</span></a></li>
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<li><a href="pages.html"><span>Related Pages</span></a></li>
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<li><a href="modules.html"><span>Modules</span></a></li>
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<li><a href="annotated.html"><span>Classes</span></a></li>
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<li><a href="files.html"><span>Files</span></a></li>
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<div class="header">
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<a href="#func-members">Functions</a> </div>
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<div class="headertitle">
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<div class="title">GLM_GTX_fast_square_root: Fast square root functions</div> </div>
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<div class="ingroups"><a class="el" href="a00137.html">GTX Extensions (Experimental)</a></div></div>
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<div class="contents">
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<table class="memberdecls">
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<tr><td colspan="2"><h2><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr><td class="memTemplParams" colspan="2">template<typename genType > </td></tr>
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<tr><td class="memTemplItemLeft" align="right" valign="top">genType::value_type </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00168.html#ga646eee2633e9de7274de9bc6f5af92b5">fastDistance</a> (genType const &x, genType const &y)</td></tr>
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<tr><td class="memTemplParams" colspan="2">template<typename genType > </td></tr>
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<tr><td class="memTemplItemLeft" align="right" valign="top">genType </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00168.html#ga49dd9caa2853398474e5aae377259a22">fastInverseSqrt</a> (genType const &x)</td></tr>
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<tr><td class="memTemplParams" colspan="2">template<typename genType > </td></tr>
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<tr><td class="memTemplItemLeft" align="right" valign="top">genType::value_type </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00168.html#ga2e726cc8b9f02b7c09910858ea1afac6">fastLength</a> (genType const &x)</td></tr>
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<tr><td class="memTemplParams" colspan="2">template<typename genType > </td></tr>
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<tr><td class="memTemplItemLeft" align="right" valign="top">genType </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00168.html#ga2953e7426a420bb2b33affce7360ef40">fastNormalize</a> (genType const &x)</td></tr>
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<tr><td class="memTemplParams" colspan="2">template<typename genType > </td></tr>
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<tr><td class="memTemplItemLeft" align="right" valign="top">genType </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00168.html#gad57c343d2362c1469043adedeb8ef8eb">fastSqrt</a> (genType const &x)</td></tr>
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</table>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
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<p>Fast but less accurate implementations of square root based functions. </p>
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<ul>
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<li>Sqrt optimisation based on Newton's method, www.gamedev.net/community/forums/topic.asp?topic id=139956</li>
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</ul>
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<p><<a class="el" href="a00024.html" title="OpenGL Mathematics (glm.g-truc.net)">glm/gtx/fast_square_root.hpp</a>> need to be included to use these functionalities. </p>
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<hr/><h2>Function Documentation</h2>
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<a class="anchor" id="ga646eee2633e9de7274de9bc6f5af92b5"></a><!-- doxytag: member="glm::fastDistance" ref="ga646eee2633e9de7274de9bc6f5af92b5" args="(genType const &x, genType const &y)" -->
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">genType::value_type glm::fastDistance </td>
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<td>(</td>
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<td class="paramtype">genType const & </td>
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<td class="paramname"><em>x</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">genType const & </td>
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<td class="paramname"><em>y</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div>
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<div class="memdoc">
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<p>Faster than the common distance function but less accurate. </p>
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<p>From GLM_GTX_fast_square_root extension. </p>
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</div>
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</div>
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<a class="anchor" id="ga49dd9caa2853398474e5aae377259a22"></a><!-- doxytag: member="glm::fastInverseSqrt" ref="ga49dd9caa2853398474e5aae377259a22" args="(genType const &x)" -->
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<div class="memitem">
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<table class="memname">
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<tr>
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<td class="memname">genType glm::fastInverseSqrt </td>
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<td>(</td>
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<td class="paramtype">genType const & </td>
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<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div>
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<div class="memdoc">
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<p>Faster than the common inversesqrt function but less accurate. </p>
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<p>From GLM_GTX_fast_square_root extension. </p>
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</div>
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</div>
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<a class="anchor" id="ga2e726cc8b9f02b7c09910858ea1afac6"></a><!-- doxytag: member="glm::fastLength" ref="ga2e726cc8b9f02b7c09910858ea1afac6" args="(genType const &x)" -->
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<div class="memitem">
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<table class="memname">
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<tr>
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<td class="memname">genType::value_type glm::fastLength </td>
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<td>(</td>
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<td class="paramtype">genType const & </td>
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<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div>
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<div class="memdoc">
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<p>Faster than the common length function but less accurate. </p>
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<p>From GLM_GTX_fast_square_root extension. </p>
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</div>
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</div>
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<a class="anchor" id="ga2953e7426a420bb2b33affce7360ef40"></a><!-- doxytag: member="glm::fastNormalize" ref="ga2953e7426a420bb2b33affce7360ef40" args="(genType const &x)" -->
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<td class="memname">genType glm::fastNormalize </td>
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<td>(</td>
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<td class="paramtype">genType const & </td>
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<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
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</table>
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</div>
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<div class="memdoc">
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<p>Faster than the common normalize function but less accurate. </p>
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<p>From GLM_GTX_fast_square_root extension. </p>
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</div>
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</div>
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<a class="anchor" id="gad57c343d2362c1469043adedeb8ef8eb"></a><!-- doxytag: member="glm::fastSqrt" ref="gad57c343d2362c1469043adedeb8ef8eb" args="(genType const &x)" -->
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<div class="memitem">
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<table class="memname">
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<tr>
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<td class="memname">genType glm::fastSqrt </td>
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<td>(</td>
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<td class="paramtype">genType const & </td>
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<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
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</div>
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<div class="memdoc">
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<p>Faster than the common sqrt function but less accurate. </p>
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<p>From GLM_GTX_fast_square_root extension. </p>
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</div>
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</div>
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</div>
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<hr class="footer"/><address class="footer"><small>
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Generated by  <a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/>
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</a> 1.7.5.1
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</small></address>
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