cpp
/
glm
réplica de https://github.com/g-truc/glm.git


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333
							<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.10"/>
<title>0.9.9 API documenation: GLM_GTX_fast_square_root</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
  $(document).ready(function() { init_search(); });
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 56px;">
  <td id="projectlogo"><img alt="Logo" src="logo-mini.png"/></td>
  <td id="projectalign" style="padding-left: 0.5em;">
   <div id="projectname">0.9.9 API documenation
   </div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.10 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
  <div id="navrow1" class="tabs">
    <ul class="tablist">
      <li><a href="index.html"><span>Main&#160;Page</span></a></li>
      <li><a href="modules.html"><span>Modules</span></a></li>
      <li><a href="files.html"><span>Files</span></a></li>
      <li>
        <div id="MSearchBox" class="MSearchBoxInactive">
        <span class="left">
          <img id="MSearchSelect" src="search/mag_sel.png"
               onmouseover="return searchBox.OnSearchSelectShow()"
               onmouseout="return searchBox.OnSearchSelectHide()"
               alt=""/>
          <input type="text" id="MSearchField" value="Search" accesskey="S"
               onfocus="searchBox.OnSearchFieldFocus(true)" 
               onblur="searchBox.OnSearchFieldFocus(false)" 
               onkeyup="searchBox.OnSearchFieldChange(event)"/>
          </span><span class="right">
            <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
          </span>
        </div>
      </li>
    </ul>
  </div>
</div><!-- top -->
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div class="header">
  <div class="summary">
<a href="#func-members">Functions</a>  </div>
  <div class="headertitle">
<div class="title">GLM_GTX_fast_square_root<div class="ingroups"><a class="el" href="a00154.html">GTX Extensions (Experimental)</a></div></div>  </div>
</div><!--header-->
<div class="contents">

<p>Fast but less accurate implementations of square root based functions.  
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:gaac333418d0c4e0cc6d3d219ed606c238"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gaac333418d0c4e0cc6d3d219ed606c238"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00194.html#gaac333418d0c4e0cc6d3d219ed606c238">fastDistance</a> (genType x, genType y)</td></tr>
<tr class="memdesc:gaac333418d0c4e0cc6d3d219ed606c238"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common distance function but less accurate.  <a href="a00194.html#gaac333418d0c4e0cc6d3d219ed606c238">More...</a><br /></td></tr>
<tr class="separator:gaac333418d0c4e0cc6d3d219ed606c238"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga6d1ac559cd77d69119e30c3aca0e14b5"><td class="memTemplParams" colspan="2">template&lt;typename T , precision P, template&lt; typename, precision &gt; class vecType&gt; </td></tr>
<tr class="memitem:ga6d1ac559cd77d69119e30c3aca0e14b5"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL T&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00194.html#ga6d1ac559cd77d69119e30c3aca0e14b5">fastDistance</a> (vecType&lt; T, P &gt; const &amp;x, vecType&lt; T, P &gt; const &amp;y)</td></tr>
<tr class="memdesc:ga6d1ac559cd77d69119e30c3aca0e14b5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common distance function but less accurate.  <a href="a00194.html#ga6d1ac559cd77d69119e30c3aca0e14b5">More...</a><br /></td></tr>
<tr class="separator:ga6d1ac559cd77d69119e30c3aca0e14b5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga7f081b14d9c7035c8714eba5f7f75a8f"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga7f081b14d9c7035c8714eba5f7f75a8f"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00194.html#ga7f081b14d9c7035c8714eba5f7f75a8f">fastInverseSqrt</a> (genType x)</td></tr>
<tr class="memdesc:ga7f081b14d9c7035c8714eba5f7f75a8f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common inversesqrt function but less accurate.  <a href="a00194.html#ga7f081b14d9c7035c8714eba5f7f75a8f">More...</a><br /></td></tr>
<tr class="separator:ga7f081b14d9c7035c8714eba5f7f75a8f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga903878071f92e51e551791e584a171a1"><td class="memTemplParams" colspan="2">template&lt;typename T , precision P, template&lt; typename, precision &gt; class vecType&gt; </td></tr>
<tr class="memitem:ga903878071f92e51e551791e584a171a1"><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="a00194.html#ga903878071f92e51e551791e584a171a1">fastInverseSqrt</a> (vecType&lt; T, P &gt; const &amp;x)</td></tr>
<tr class="memdesc:ga903878071f92e51e551791e584a171a1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common inversesqrt function but less accurate.  <a href="a00194.html#ga903878071f92e51e551791e584a171a1">More...</a><br /></td></tr>
<tr class="separator:ga903878071f92e51e551791e584a171a1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gafe697d6287719538346bbdf8b1367c59"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gafe697d6287719538346bbdf8b1367c59"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00194.html#gafe697d6287719538346bbdf8b1367c59">fastLength</a> (genType x)</td></tr>
<tr class="memdesc:gafe697d6287719538346bbdf8b1367c59"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common length function but less accurate.  <a href="a00194.html#gafe697d6287719538346bbdf8b1367c59">More...</a><br /></td></tr>
<tr class="separator:gafe697d6287719538346bbdf8b1367c59"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gae28a3099cbd6404a4ea8ef22147ed7b0"><td class="memTemplParams" colspan="2">template&lt;typename T , precision P, template&lt; typename, precision &gt; class vecType&gt; </td></tr>
<tr class="memitem:gae28a3099cbd6404a4ea8ef22147ed7b0"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL T&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00194.html#gae28a3099cbd6404a4ea8ef22147ed7b0">fastLength</a> (vecType&lt; T, P &gt; const &amp;x)</td></tr>
<tr class="memdesc:gae28a3099cbd6404a4ea8ef22147ed7b0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common length function but less accurate.  <a href="a00194.html#gae28a3099cbd6404a4ea8ef22147ed7b0">More...</a><br /></td></tr>
<tr class="separator:gae28a3099cbd6404a4ea8ef22147ed7b0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga3b02c1d6e0c754144e2f1e110bf9f16c"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga3b02c1d6e0c754144e2f1e110bf9f16c"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00194.html#ga3b02c1d6e0c754144e2f1e110bf9f16c">fastNormalize</a> (genType const &amp;x)</td></tr>
<tr class="memdesc:ga3b02c1d6e0c754144e2f1e110bf9f16c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common normalize function but less accurate.  <a href="a00194.html#ga3b02c1d6e0c754144e2f1e110bf9f16c">More...</a><br /></td></tr>
<tr class="separator:ga3b02c1d6e0c754144e2f1e110bf9f16c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga6c460e9414a50b2fc455c8f64c86cdc9"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<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="a00194.html#ga6c460e9414a50b2fc455c8f64c86cdc9">fastSqrt</a> (genType x)</td></tr>
<tr class="memdesc:ga6c460e9414a50b2fc455c8f64c86cdc9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common sqrt function but less accurate.  <a href="a00194.html#ga6c460e9414a50b2fc455c8f64c86cdc9">More...</a><br /></td></tr>
<tr class="separator:ga6c460e9414a50b2fc455c8f64c86cdc9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaad9f601bbc3faa04dda384e4c4e1592c"><td class="memTemplParams" colspan="2">template&lt;typename T , precision P, template&lt; typename, precision &gt; class vecType&gt; </td></tr>
<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="a00194.html#gaad9f601bbc3faa04dda384e4c4e1592c">fastSqrt</a> (vecType&lt; T, P &gt; const &amp;x)</td></tr>
<tr class="memdesc:gaad9f601bbc3faa04dda384e4c4e1592c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common sqrt function but less accurate.  <a href="a00194.html#gaad9f601bbc3faa04dda384e4c4e1592c">More...</a><br /></td></tr>
<tr class="separator:gaad9f601bbc3faa04dda384e4c4e1592c"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<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="a00028.html" title="GLM_GTX_fast_square_root ">glm/gtx/fast_square_root.hpp</a>&gt; need to be included to use these functionalities. </p>
<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="gaac333418d0c4e0cc6d3d219ed606c238"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">GLM_FUNC_DECL genType glm::fastDistance </td>
          <td>(</td>
          <td class="paramtype">genType&#160;</td>
          <td class="paramname"><em>x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">genType&#160;</td>
          <td class="paramname"><em>y</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Faster than the common distance function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00194.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>

</div>
</div>
<a class="anchor" id="ga6d1ac559cd77d69119e30c3aca0e14b5"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">GLM_FUNC_DECL T glm::fastDistance </td>
          <td>(</td>
          <td class="paramtype">vecType&lt; T, P &gt; const &amp;&#160;</td>
          <td class="paramname"><em>x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">vecType&lt; T, P &gt; const &amp;&#160;</td>
          <td class="paramname"><em>y</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Faster than the common distance function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00194.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>

</div>
</div>
<a class="anchor" id="ga7f081b14d9c7035c8714eba5f7f75a8f"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">GLM_FUNC_DECL genType glm::fastInverseSqrt </td>
          <td>(</td>
          <td class="paramtype">genType&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Faster than the common inversesqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00194.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>

</div>
</div>
<a class="anchor" id="ga903878071f92e51e551791e584a171a1"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">GLM_FUNC_DECL vecType&lt;T, P&gt; glm::fastInverseSqrt </td>
          <td>(</td>
          <td class="paramtype">vecType&lt; T, P &gt; const &amp;&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Faster than the common inversesqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00194.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>

</div>
</div>
<a class="anchor" id="gafe697d6287719538346bbdf8b1367c59"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">GLM_FUNC_DECL genType glm::fastLength </td>
          <td>(</td>
          <td class="paramtype">genType&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Faster than the common length function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00194.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>

</div>
</div>
<a class="anchor" id="gae28a3099cbd6404a4ea8ef22147ed7b0"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">GLM_FUNC_DECL T glm::fastLength </td>
          <td>(</td>
          <td class="paramtype">vecType&lt; T, P &gt; const &amp;&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Faster than the common length function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00194.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>

</div>
</div>
<a class="anchor" id="ga3b02c1d6e0c754144e2f1e110bf9f16c"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">GLM_FUNC_DECL genType glm::fastNormalize </td>
          <td>(</td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Faster than the common normalize function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00194.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>

</div>
</div>
<a class="anchor" id="ga6c460e9414a50b2fc455c8f64c86cdc9"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">GLM_FUNC_DECL genType glm::fastSqrt </td>
          <td>(</td>
          <td class="paramtype">genType&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Faster than the common sqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00194.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>

</div>
</div>
<a class="anchor" id="gaad9f601bbc3faa04dda384e4c4e1592c"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">GLM_FUNC_DECL vecType&lt;T, P&gt; glm::fastSqrt </td>
          <td>(</td>
          <td class="paramtype">vecType&lt; T, P &gt; const &amp;&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Faster than the common sqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00194.html" title="Fast but less accurate implementations of square root based functions. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>

</div>
</div>
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.10
</small></address>
</body>
</html>