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<title>GLM_GTX_ulp: Accuracy measurement</title>
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<a href="#func-members">Functions</a> </div>
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<h1>GLM_GTX_ulp: Accuracy measurement</h1> </div>
<div class="ingroups"><a class="el" href="a00152.html">GTX Extensions (Experimental)</a></div></div>
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<p>Allow the measurement of the accuracy of a function against a reference implementation.
<a href="#_details">More...</a></p>
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Functions</h2></td></tr>
<tr><td class="memTemplParams" colspan="2">template&lt;typename T &gt; </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">uint&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00222.html#gaa9c7dda6ebfaed5249495358c3a50265">float_distance</a> (T const &amp;x, T const &amp;y)</td></tr>
<tr><td class="memTemplParams" colspan="2">template&lt;typename T , template&lt; typename &gt; class vecType&gt; </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">vecType&lt; uint &gt;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00222.html#ga8667f717789de8b8936c607fdd27793f">float_distance</a> (vecType&lt; T &gt; const &amp;x, vecType&lt; T &gt; const &amp;y)</td></tr>
<tr><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00222.html#ga125f81c629faed6d267ee38f9a2ba73b">next_float</a> (genType const &amp;x)</td></tr>
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<tr><td class="memTemplItemLeft" align="right" valign="top">genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00222.html#ga90fb8abf378453f68931966989627159">prev_float</a> (genType const &amp;x)</td></tr>
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<hr/><a name="_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. &lt;<a class="el" href="a00130.html" title="OpenGL Mathematics (glm.g-truc.net)">glm/gtx/ulp.hpp</a>&gt; need to be included to use these functionalities. </p>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="gaa9c7dda6ebfaed5249495358c3a50265"></a><!-- doxytag: member="glm::float_distance" ref="gaa9c7dda6ebfaed5249495358c3a50265" args="(T const &amp;x, T const &amp;y)" -->
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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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<a class="anchor" id="ga8667f717789de8b8936c607fdd27793f"></a><!-- doxytag: member="glm::float_distance" ref="ga8667f717789de8b8936c607fdd27793f" args="(vecType&lt; T &gt; const &amp;x, vecType&lt; T &gt; const &amp;y)" -->
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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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<p>Return the next ULP value(s) after the input value(s). </p>
<p>From GLM_GTX_ulp extension. </p>
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<p>Return the value(s) ULP distance after the input value(s). </p>
<p>From GLM_GTX_ulp extension. </p>
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<a class="anchor" id="ga8c0adb311cd0b5f2b66785de7da24e49"></a><!-- doxytag: member="glm::prev_float" ref="ga8c0adb311cd0b5f2b66785de7da24e49" args="(genType const &amp;x, uint const &amp;Distance)" -->
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<p>Return the value(s) ULP distance before the input value(s). </p>
<p>From GLM_GTX_ulp extension. </p>
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<a class="anchor" id="ga90fb8abf378453f68931966989627159"></a><!-- doxytag: member="glm::prev_float" ref="ga90fb8abf378453f68931966989627159" args="(genType const &amp;x)" -->
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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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