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diff --git a/src/Moof/cml/vector/vector_functions.h b/src/Moof/cml/vector/vector_functions.h
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+++ b/src/Moof/cml/vector/vector_functions.h
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+/* -*- C++ -*- ------------------------------------------------------------
+ 
+Copyright (c) 2007 Jesse Anders and Demian Nave http://cmldev.net/
+
+The Configurable Math Library (CML) is distributed under the terms of the
+Boost Software License, v1.0 (see cml/LICENSE for details).
+
+ *-----------------------------------------------------------------------*/
+/** @file
+ *  @brief
+ */
+
+#ifndef vector_functions_h
+#define vector_functions_h
+
+namespace cml {
+
+/** Squared length of a vector. */
+template<typename E, class AT>
+inline typename vector<E,AT>::value_type
+length_squared(const vector<E,AT>& arg)
+{
+    return arg.length_squared();
+}
+
+/** Squared length of a vector expr. */
+template<typename XprT>
+inline typename XprT::value_type
+length_squared(VECXPR_ARG_TYPE arg)
+{
+    return arg.length_squared();
+}
+
+/** Length of a vector. */
+template<typename E, class AT>
+inline typename vector<E,AT>::value_type
+length(const vector<E,AT>& arg)
+{
+    return arg.length();
+}
+
+/** Length of a vector expr. */
+template<typename XprT>
+inline typename XprT::value_type
+length(VECXPR_ARG_TYPE arg)
+{
+    return arg.length();
+}
+
+/** Normalize a vector. */
+template<typename E, class AT>
+inline vector<E, AT>
+normalize(const vector<E,AT>& arg)
+{
+    vector<E, AT> result(arg);
+    result.normalize();
+    return result;
+}
+
+/** Normalize a vector expr. */
+template<typename XprT>
+inline typename XprT::result_type
+normalize(VECXPR_ARG_TYPE arg)
+{
+    return arg.normalize();
+}
+
+} // namespace cml
+
+#endif
+
+// -------------------------------------------------------------------------
+// vim:ft=cpp