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diff --git a/external/include/glm/gtx/orthonormalize.inl b/external/include/glm/gtx/orthonormalize.inl
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+++ b/external/include/glm/gtx/orthonormalize.inl
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+/// @ref gtx_orthonormalize
+/// @file glm/gtx/orthonormalize.inl
+
+namespace glm
+{
+	template <typename T, precision P>
+	GLM_FUNC_QUALIFIER tmat3x3<T, P> orthonormalize(tmat3x3<T, P> const & m)
+	{
+		tmat3x3<T, P> r = m;
+
+		r[0] = normalize(r[0]);
+
+		T d0 = dot(r[0], r[1]);
+		r[1] -= r[0] * d0;
+		r[1] = normalize(r[1]);
+
+		T d1 = dot(r[1], r[2]);
+		d0 = dot(r[0], r[2]);
+		r[2] -= r[0] * d0 + r[1] * d1;
+		r[2] = normalize(r[2]);
+
+		return r;
+	}
+
+	template <typename T, precision P> 
+	GLM_FUNC_QUALIFIER tvec3<T, P> orthonormalize(tvec3<T, P> const & x, tvec3<T, P> const & y)
+	{
+		return normalize(x - y * dot(y, x));
+	}
+}//namespace glm