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<div id="projectname">0.9.6
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<a href="#func-members">Functions</a> </div>
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<div class="title">GLM_GTX_fast_square_root<div class="ingroups"><a class="el" href="a00159.html">GTX Extensions (Experimental)</a></div></div> </div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
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<tr class="memitem:gaac333418d0c4e0cc6d3d219ed606c238"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
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<tr class="memitem:ga6c460e9414a50b2fc455c8f64c86cdc9"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00195.html#ga6c460e9414a50b2fc455c8f64c86cdc9">fastSqrt</a> (genType x)</td></tr>
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<tr class="memitem:gaad9f601bbc3faa04dda384e4c4e1592c"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL vecType&lt; T, P &gt;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00195.html#gaad9f601bbc3faa04dda384e4c4e1592c">fastSqrt</a> (vecType&lt; T, P &gt; const &amp;x)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<p>Fast but less accurate implementations of square root based functions. </p>
<ul>
<li>Sqrt optimisation based on Newton's method, www.gamedev.net/community/forums/topic.asp?topic id=139956</li>
</ul>
<p>&lt;<a class="el" href="a00026.html" title="OpenGL Mathematics (glm.g-truc.net) ">glm/gtx/fast_square_root.hpp</a>&gt; need to be included to use these functionalities. </p>
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<h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="gaac333418d0c4e0cc6d3d219ed606c238"></a>
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<td class="memname">GLM_FUNC_DECL genType glm::fastDistance </td>
<td>(</td>
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<td class="paramtype">genType&#160;</td>
<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&#160;</td>
<td class="paramname"><em>y</em>&#160;</td>
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<tr>
<td></td>
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<td>)</td>
<td></td><td></td>
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</tr>
</table>
</div><div class="memdoc">
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<p>Faster than the common distance function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00195.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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</div>
</div>
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<a class="anchor" id="ga6d1ac559cd77d69119e30c3aca0e14b5"></a>
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<div class="memitem">
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<td class="memname">GLM_FUNC_DECL T glm::fastDistance </td>
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<td>(</td>
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<td class="paramtype">vecType&lt; T, P &gt; const &amp;&#160;</td>
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<td class="paramname"><em>x</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">vecType&lt; T, P &gt; const &amp;&#160;</td>
<td class="paramname"><em>y</em>&#160;</td>
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</tr>
<tr>
<td></td>
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<td>)</td>
<td></td><td></td>
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</tr>
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<p>Faster than the common distance function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00195.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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</div>
</div>
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<td class="memname">GLM_FUNC_DECL genType glm::fastInverseSqrt </td>
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<td>(</td>
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<td class="paramtype">genType&#160;</td>
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<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
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<p>Faster than the common inversesqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00195.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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</div>
</div>
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<td class="memname">GLM_FUNC_DECL vecType&lt;T, P&gt; glm::fastInverseSqrt </td>
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<td>(</td>
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<td class="paramtype">vecType&lt; T, P &gt; const &amp;&#160;</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><div class="memdoc">
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<p>Faster than the common inversesqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00195.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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</div>
</div>
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<td class="memname">GLM_FUNC_DECL genType glm::fastLength </td>
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<td>(</td>
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<td class="paramtype">genType&#160;</td>
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<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
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<p>Faster than the common length function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00195.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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</div>
</div>
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<a class="anchor" id="gae28a3099cbd6404a4ea8ef22147ed7b0"></a>
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<div class="memitem">
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<td class="memname">GLM_FUNC_DECL T glm::fastLength </td>
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<td>(</td>
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<td class="paramtype">vecType&lt; T, P &gt; const &amp;&#160;</td>
<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
</tr>
</table>
</div><div class="memdoc">
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<p>Faster than the common length function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00195.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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</div>
</div>
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<a class="anchor" id="ga3b02c1d6e0c754144e2f1e110bf9f16c"></a>
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<div class="memitem">
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<td class="memname">GLM_FUNC_DECL genType glm::fastNormalize </td>
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<td>(</td>
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<td class="paramtype">genType const &amp;&#160;</td>
<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
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<p>Faster than the common normalize function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00195.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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</div>
</div>
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<a class="anchor" id="ga6c460e9414a50b2fc455c8f64c86cdc9"></a>
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<td class="memname">GLM_FUNC_DECL genType glm::fastSqrt </td>
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<td>(</td>
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<td class="paramtype">genType&#160;</td>
<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
</tr>
</table>
</div><div class="memdoc">
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<p>Faster than the common sqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00195.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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</div>
</div>
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<a class="anchor" id="gaad9f601bbc3faa04dda384e4c4e1592c"></a>
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<div class="memitem">
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<td class="memname">GLM_FUNC_DECL vecType&lt;T, P&gt; glm::fastSqrt </td>
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<td>(</td>
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<td class="paramtype">vecType&lt; T, P &gt; const &amp;&#160;</td>
<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
</tr>
</table>
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</div><div class="memdoc">
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<p>Faster than the common sqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00195.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
</div>
</div>
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