--- /dev/null
+/* -*- 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 Defines the various combinations of vector expressions.
+ *
+ * Create unary and binary operators with macros. The available combinations
+ * are:
+ *
+ * Unary expressions:
+ *
+ * op Vector -> Vector
+ * op VecXpr -> VecXpr
+ *
+ * Binary expressions:
+ *
+ * Vector op Vector -> Vector
+ * VecXpr op Vector -> VecXpr
+ * Vector op VecXpr -> VecXpr
+ * VecXpr op VecXpr -> VecXpr
+ *
+ * Vector op Scalar -> Vector
+ * Scalar op Vector -> Vector
+ * VecXpr op Scalar -> VecXpr
+ * Scalar op VecXpr -> VecXpr
+ *
+ * All of the generator functions compress the expression tree by hoisting
+ * subexpressions into the containing expression. This has the effect of
+ * forcing only the root node of the expression tree to be a VectorXpr.
+ * Every other node is a Unary or BinaryVectorOp.
+ *
+ * @todo Should ScalarT in expressions be passed by reference or by value?
+ */
+
+#ifndef vecop_macros_h
+#define vecop_macros_h
+
+/** Declare a unary operator taking a vector operand. */
+#define CML_VEC_UNIOP(_op_, _OpT_) \
+template<typename E, class AT> \
+inline et::VectorXpr< \
+ et::UnaryVectorOp< vector<E,AT>, _OpT_ <E> > \
+> \
+ \
+_op_ (const vector<E,AT>& arg) \
+{ \
+ typedef et::UnaryVectorOp< \
+ vector<E,AT>, _OpT_ <E> \
+ > ExprT; \
+ return et::VectorXpr<ExprT>(ExprT(arg)); \
+}
+
+
+/** Declare a unary operator taking a et::VectorXpr operand. */
+#define CML_VECXPR_UNIOP(_op_, _OpT_) \
+template<class XprT> \
+inline et::VectorXpr< \
+ et::UnaryVectorOp< XprT, _OpT_ <typename XprT::value_type> > \
+> \
+ \
+_op_ (VECXPR_ARG_TYPE arg) \
+{ \
+ typedef et::UnaryVectorOp< \
+ XprT, _OpT_ <typename XprT::value_type> \
+ > ExprT; \
+ return et::VectorXpr<ExprT>(ExprT(arg.expression())); \
+}
+
+
+/** Declare an operator taking two vector operands. */
+#define CML_VEC_VEC_BINOP(_op_, _OpT_) \
+template<typename E1, class AT1, typename E2, class AT2> \
+inline et::VectorXpr< \
+ et::BinaryVectorOp< \
+ vector<E1,AT1>, vector<E2,AT2>, _OpT_ <E1,E2> \
+ > \
+> \
+ \
+_op_ ( \
+ const vector<E1,AT1>& left, \
+ const vector<E2,AT2>& right) \
+{ \
+ typedef et::BinaryVectorOp< \
+ vector<E1,AT1>, vector<E2,AT2>, _OpT_ <E1,E2> \
+ > ExprT; \
+ return et::VectorXpr<ExprT>(ExprT(left,right)); \
+}
+
+
+/** Declare an operator taking a vector and a et::VectorXpr. */
+#define CML_VEC_VECXPR_BINOP(_op_, _OpT_) \
+template<typename E, class AT, class XprT> \
+inline et::VectorXpr< \
+ et::BinaryVectorOp< \
+ vector<E,AT>, XprT, _OpT_ <E, typename XprT::value_type> \
+ > \
+> \
+ \
+_op_ ( \
+ const vector<E,AT>& left, \
+ VECXPR_ARG_TYPE right) \
+{ \
+ typedef et::BinaryVectorOp< \
+ vector<E,AT>, XprT, \
+ _OpT_ <E, typename XprT::value_type> \
+ > ExprT; \
+ return et::VectorXpr<ExprT>(ExprT(left,right.expression())); \
+}
+
+
+/** Declare an operator taking an et::VectorXpr and a vector. */
+#define CML_VECXPR_VEC_BINOP(_op_, _OpT_) \
+template<class XprT, typename E, class AT> \
+inline et::VectorXpr< \
+ et::BinaryVectorOp< \
+ XprT, vector<E,AT>, _OpT_ <typename XprT::value_type, E> \
+ > \
+> \
+ \
+_op_ ( \
+ VECXPR_ARG_TYPE left, \
+ const vector<E,AT>& right) \
+{ \
+ typedef et::BinaryVectorOp< \
+ XprT, vector<E,AT>, \
+ _OpT_ <typename XprT::value_type, E> \
+ > ExprT; \
+ return et::VectorXpr<ExprT>(ExprT(left.expression(),right)); \
+}
+
+
+/** Declare an operator taking two et::VectorXpr operands. */
+#define CML_VECXPR_VECXPR_BINOP(_op_, _OpT_) \
+template<class XprT1, class XprT2> \
+inline et::VectorXpr< \
+ et::BinaryVectorOp< \
+ XprT1, XprT2, \
+ _OpT_ < \
+ typename XprT1::value_type, \
+ typename XprT2::value_type \
+ > \
+ > \
+> \
+ \
+_op_ ( \
+ VECXPR_ARG_TYPE_N(1) left, \
+ VECXPR_ARG_TYPE_N(2) right) \
+{ \
+ typedef et::BinaryVectorOp< \
+ XprT1, XprT2, \
+ _OpT_ < \
+ typename XprT1::value_type, \
+ typename XprT2::value_type> \
+ > ExprT; \
+ return et::VectorXpr<ExprT>( \
+ ExprT(left.expression(),right.expression())); \
+}
+
+
+/** Declare an operator taking a vector and a scalar. */
+#define CML_VEC_SCALAR_BINOP(_op_, _OpT_) \
+template<typename E, class AT, typename ScalarT> \
+inline et::VectorXpr< \
+ et::BinaryVectorOp< \
+ vector<E,AT>, ScalarT, _OpT_ <E,ScalarT> \
+ > \
+> \
+ \
+_op_ ( \
+ const vector<E,AT>& left, \
+ SCALAR_ARG_TYPE right) \
+{ \
+ typedef et::BinaryVectorOp< \
+ vector<E,AT>, ScalarT, _OpT_ <E,ScalarT> \
+ > ExprT; \
+ return et::VectorXpr<ExprT>(ExprT(left,right)); \
+}
+
+
+/** Declare an operator taking a scalar and a vector. */
+#define CML_SCALAR_VEC_BINOP(_op_, _OpT_) \
+template<typename ScalarT, typename E, class AT> \
+inline et::VectorXpr< \
+ et::BinaryVectorOp< \
+ ScalarT, vector<E,AT>, _OpT_ <ScalarT,E> \
+ > \
+> \
+ \
+_op_ ( \
+ SCALAR_ARG_TYPE left, \
+ const vector<E,AT>& right) \
+{ \
+ typedef et::BinaryVectorOp< \
+ ScalarT, vector<E,AT>, _OpT_ <ScalarT,E> \
+ > ExprT; \
+ return et::VectorXpr<ExprT>(ExprT(left,right)); \
+}
+
+
+/** Declare an operator taking a et::VectorXpr and a scalar. */
+#define CML_VECXPR_SCALAR_BINOP(_op_, _OpT_) \
+template<class XprT, typename ScalarT> \
+inline et::VectorXpr< \
+ et::BinaryVectorOp< \
+ XprT, ScalarT, _OpT_ <typename XprT::value_type,ScalarT> \
+ > \
+> \
+ \
+_op_ ( \
+ VECXPR_ARG_TYPE left, \
+ SCALAR_ARG_TYPE right) \
+{ \
+ typedef et::BinaryVectorOp< \
+ XprT, ScalarT, _OpT_ <typename XprT::value_type,ScalarT> \
+ > ExprT; \
+ return et::VectorXpr<ExprT>(ExprT(left.expression(),right)); \
+}
+
+
+/** Declare an operator taking a scalar and a et::VectorXpr. */
+#define CML_SCALAR_VECXPR_BINOP(_op_, _OpT_) \
+template<typename ScalarT, class XprT> \
+inline et::VectorXpr< \
+ et::BinaryVectorOp< \
+ ScalarT, XprT, _OpT_ <ScalarT, typename XprT::value_type> \
+ > \
+> \
+ \
+_op_ ( \
+ SCALAR_ARG_TYPE left, \
+ VECXPR_ARG_TYPE right) \
+{ \
+ typedef et::BinaryVectorOp< \
+ ScalarT, XprT, \
+ _OpT_ <ScalarT, typename XprT::value_type> \
+ > ExprT; \
+ return et::VectorXpr<ExprT>(ExprT(left,right.expression())); \
+}
+
+#endif
+
+// -------------------------------------------------------------------------
+// vim:ft=cpp
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