78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
/* -*- C++ -*- ------------------------------------------------------------
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Copyright (c) 2007 Jesse Anders and Demian Nave http://cmldev.net/
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The Configurable Math Library (CML) is distributed under the terms of the
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Boost Software License, v1.0 (see cml/LICENSE for details).
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*-----------------------------------------------------------------------*/
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/** @file
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* @brief
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*
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* Defines promotions for vectors used in vector/vector or vector/scalar
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* expressions.
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*
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* @sa BinaryVectorOp
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*/
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#ifndef vector_promotions_h
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#define vector_promotions_h
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#include <cml/et/scalar_promotions.h>
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#include <cml/et/array_promotions.h>
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namespace cml {
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namespace et {
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/* Default vector type promotion template. */
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template<class LeftT, class RightT> struct VectorPromote;
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/** Type promotion for two vector types. */
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template<typename E1, class AT1, typename E2, class AT2>
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struct VectorPromote< cml::vector<E1,AT1>, cml::vector<E2,AT2> >
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{
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typedef typename ArrayPromote<
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typename cml::vector<E1,AT1>::array_type,
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typename cml::vector<E2,AT2>::array_type
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>::type promoted_array;
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/* The deduced vector result type: */
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typedef cml::vector<
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typename promoted_array::value_type,
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typename promoted_array::generator_type
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> type;
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/* The deduced temporary type: */
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typedef typename type::temporary_type temporary_type;
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};
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/** Type promotion for a vector and a scalar. */
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template<typename E, class AT, typename S>
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struct VectorPromote<cml::vector<E,AT>, S>
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{
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/* The deduced vector result type (the array type is the same): */
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typedef cml::vector<typename ScalarPromote<E,S>::type, AT> type;
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/* The deduced temporary type: */
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typedef typename type::temporary_type temporary_type;
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};
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/** Type promotion for a scalar and a vector. */
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template<typename S, typename E, class AT>
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struct VectorPromote<S, cml::vector<E,AT> >
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{
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/* The deduced vector result type (the array type is the same): */
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typedef cml::vector<typename ScalarPromote<S,E>::type, AT> type;
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/* The deduced temporary type: */
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typedef typename type::temporary_type temporary_type;
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};
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} // namespace et
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} // namespace cml
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#endif
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// -------------------------------------------------------------------------
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// vim:ft=cpp
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