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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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<title>GLM_GTX_ulp: Accuracy measurement</title>
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<div class="header">
<div class="summary">
<a href="#func-members">Functions</a> </div>
<div class="headertitle">
<div class="title">GLM_GTX_ulp: Accuracy measurement</div> </div>
<div class="ingroups"><a class="el" href="a00137.html">GTX Extensions (Experimental)</a></div></div><!--header-->
<div class="contents">
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga0c49c371f6b2adf02d03661e0f2499c9"><td class="memTemplParams" colspan="2">template<typename T > </td></tr>
<tr class="memitem:ga0c49c371f6b2adf02d03661e0f2499c9"><td class="memTemplItemLeft" align="right" valign="top">uint </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00207.html#ga0c49c371f6b2adf02d03661e0f2499c9">float_distance</a> (T const &x, T const &y)</td></tr>
<tr class="memitem:ga9b2de9eb54e59f20b20f7eccd40d435e"><td class="memTemplParams" colspan="2">template<typename T , template< typename > class vecType> </td></tr>
<tr class="memitem:ga9b2de9eb54e59f20b20f7eccd40d435e"><td class="memTemplItemLeft" align="right" valign="top">vecType< uint > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00207.html#ga9b2de9eb54e59f20b20f7eccd40d435e">float_distance</a> (vecType< T > const &x, vecType< T > const &y)</td></tr>
<tr class="memitem:ga3be6de2d954fb457ff88085128e4b521"><td class="memTemplParams" colspan="2">template<typename genType > </td></tr>
<tr class="memitem:ga3be6de2d954fb457ff88085128e4b521"><td class="memTemplItemLeft" align="right" valign="top">genType </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00207.html#ga3be6de2d954fb457ff88085128e4b521">next_float</a> (genType const &x)</td></tr>
<tr class="memitem:ga27752f3f7a9a79a50e95a9ed42800ca7"><td class="memTemplParams" colspan="2">template<typename genType > </td></tr>
<tr class="memitem:ga27752f3f7a9a79a50e95a9ed42800ca7"><td class="memTemplItemLeft" align="right" valign="top">genType </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00207.html#ga27752f3f7a9a79a50e95a9ed42800ca7">next_float</a> (genType const &x, uint const &Distance)</td></tr>
<tr class="memitem:ga2a0122b31c643ca1546635fe8e4f9f74"><td class="memTemplParams" colspan="2">template<typename genType > </td></tr>
<tr class="memitem:ga2a0122b31c643ca1546635fe8e4f9f74"><td class="memTemplItemLeft" align="right" valign="top">genType </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00207.html#ga2a0122b31c643ca1546635fe8e4f9f74">prev_float</a> (genType const &x)</td></tr>
<tr class="memitem:gae506d2fb08aff01e00763d7ed76fe117"><td class="memTemplParams" colspan="2">template<typename genType > </td></tr>
<tr class="memitem:gae506d2fb08aff01e00763d7ed76fe117"><td class="memTemplItemLeft" align="right" valign="top">genType </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00207.html#gae506d2fb08aff01e00763d7ed76fe117">prev_float</a> (genType const &x, uint const &Distance)</td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<p>Allow the measurement of the accuracy of a function against a reference implementation. </p>
<p>This extension works on floating-point data and provide results in ULP. <<a class="el" href="a00115.html" title="OpenGL Mathematics (glm.g-truc.net)">glm/gtx/ulp.hpp</a>> need to be included to use these functionalities. </p>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="ga0c49c371f6b2adf02d03661e0f2499c9"></a>
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<td class="memname">uint glm::float_distance </td>
<td>(</td>
<td class="paramtype">T const & </td>
<td class="paramname"><em>x</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">T const & </td>
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<p>Return the distance in the number of ULP between 2 scalars. </p>
<p>From GLM_GTX_ulp extension. </p>
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<td class="memname">vecType<uint> glm::float_distance </td>
<td>(</td>
<td class="paramtype">vecType< T > const & </td>
<td class="paramname"><em>x</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">vecType< T > const & </td>
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<td>)</td>
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<p>Return the distance in the number of ULP between 2 vectors. </p>
<p>From GLM_GTX_ulp extension. </p>
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<a class="anchor" id="ga3be6de2d954fb457ff88085128e4b521"></a>
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<td class="memname">genType glm::next_float </td>
<td>(</td>
<td class="paramtype">genType const & </td>
<td class="paramname"><em>x</em></td><td>)</td>
<td></td>
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<p>Return the next ULP value(s) after the input value(s). </p>
<p>From GLM_GTX_ulp extension. </p>
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<a class="anchor" id="ga27752f3f7a9a79a50e95a9ed42800ca7"></a>
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<td class="memname">genType glm::next_float </td>
<td>(</td>
<td class="paramtype">genType const & </td>
<td class="paramname"><em>x</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint const & </td>
<td class="paramname"><em>Distance</em> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Return the value(s) ULP distance after the input value(s). </p>
<p>From GLM_GTX_ulp extension. </p>
</div>
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<a class="anchor" id="ga2a0122b31c643ca1546635fe8e4f9f74"></a>
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<td class="memname">genType glm::prev_float </td>
<td>(</td>
<td class="paramtype">genType const & </td>
<td class="paramname"><em>x</em></td><td>)</td>
<td></td>
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<p>Return the previous ULP value(s) before the input value(s). </p>
<p>From GLM_GTX_ulp extension. </p>
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<a class="anchor" id="gae506d2fb08aff01e00763d7ed76fe117"></a>
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<td class="memname">genType glm::prev_float </td>
<td>(</td>
<td class="paramtype">genType const & </td>
<td class="paramname"><em>x</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint const & </td>
<td class="paramname"><em>Distance</em> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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<div class="memdoc">
<p>Return the value(s) ULP distance before the input value(s). </p>
<p>From GLM_GTX_ulp extension. </p>
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