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<div class="textblock"><h2><a class="anchor" id="issue1"></a>
not Function</h2>
<p>The GLSL keyword not is also a keyword in C++. To prevent name collisions, the GLSL not function has been implemented with the name not_.</p>
<h2><a class="anchor" id="issue2"></a>
Half Based Types</h2>
<p>GLM supports half float number types through the extension GLM_GTC_half_float. This extension provides the types half, hvec*, hmat*x* and hquat*.</p>
<p>Unfortunately, C++ 98 specification doesn�t support anonymous unions which limit hvec* vector components access to x, y, z and w.</p>
<p>However, Visual C++ does support anonymous unions if the language extensions are enabled (/Za to disable them). In this case GLM will automatically enables the support of all component names (x,y,z,w ; r,g,b,a ; s,t,p,q).</p>
<p>To uniformalize the component access across types, GLM provides the define GLM_FORCE_ONLY_XYZW which will generates errors if component accesses are done using r,g,b,a or s,t,p,q.</p>
<div class="fragment"><pre class="fragment"><span class="preprocessor">#define GLM_FORCE_ONLY_XYZW </span>
<span class="preprocessor">#include <glm/glm.hpp></span>
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