glm::faceforward</a></div><div class="ttdeci">GLM_FUNC_DECL vecType&lt; T, P &gt; faceforward(vecType&lt; T, P &gt; const &amp;N, vecType&lt; T, P &gt; const &amp;I, vecType&lt; T, P &gt; const &amp;Nref)</div><div class="ttdoc">If dot(Nref, I) < 0.0, return N, otherwise, return -N. </div></div>
<div class="ttc" id="a00153_html_ga7dada304da2ba7dd3376ab4f178c3f6b"><div class="ttname"><a href="a00153.html#ga7dada304da2ba7dd3376ab4f178c3f6b">glm::dot</a></div><div class="ttdeci">GLM_FUNC_DECL T dot(vecType&lt;