129 lines
4.0 KiB
C++
129 lines
4.0 KiB
C++
// Copyright (C) 2008-2014 National ICT Australia (NICTA)
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// -------------------------------------------------------------------
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//
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// Written by Conrad Sanderson - http://conradsanderson.id.au
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//! \addtogroup Base
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//! @{
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template<typename derived>
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struct Base_inv_yes
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{
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arma_inline const Op<derived,op_inv> i() const; //!< matrix inverse
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arma_inline const Op<derived,op_inv> i(const bool ) const; //!< kept only for compatibility with old user code
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arma_inline const Op<derived,op_inv> i(const char*) const; //!< kept only for compatibility with old user code
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};
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template<typename derived>
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struct Base_inv_no
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{
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};
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template<typename derived, bool condition>
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struct Base_inv {};
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template<typename derived>
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struct Base_inv<derived, true> { typedef Base_inv_yes<derived> result; };
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template<typename derived>
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struct Base_inv<derived, false> { typedef Base_inv_no<derived> result; };
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template<typename elem_type, typename derived>
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struct Base_eval_Mat
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{
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arma_inline const derived& eval() const;
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};
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template<typename elem_type, typename derived>
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struct Base_eval_expr
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{
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arma_inline Mat<elem_type> eval() const; //!< force the immediate evaluation of a delayed expression
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};
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template<typename elem_type, typename derived, bool condition>
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struct Base_eval {};
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template<typename elem_type, typename derived>
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struct Base_eval<elem_type, derived, true> { typedef Base_eval_Mat<elem_type, derived> result; };
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template<typename elem_type, typename derived>
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struct Base_eval<elem_type, derived, false> { typedef Base_eval_expr<elem_type, derived> result; };
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template<typename derived>
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struct Base_trans_cx
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{
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arma_inline const Op<derived,op_htrans> t() const;
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arma_inline const Op<derived,op_htrans> ht() const;
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arma_inline const Op<derived,op_strans> st() const; // simple transpose: no complex conjugates
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};
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template<typename derived>
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struct Base_trans_default
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{
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arma_inline const Op<derived,op_htrans> t() const;
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arma_inline const Op<derived,op_htrans> ht() const;
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arma_inline const Op<derived,op_htrans> st() const; // return op_htrans instead of op_strans, as it's handled better by matrix multiplication code
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};
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template<typename derived, bool condition>
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struct Base_trans {};
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template<typename derived>
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struct Base_trans<derived, true> { typedef Base_trans_cx<derived> result; };
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template<typename derived>
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struct Base_trans<derived, false> { typedef Base_trans_default<derived> result; };
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//! Class for static polymorphism, modelled after the "Curiously Recurring Template Pattern" (CRTP).
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//! Used for type-safe downcasting in functions that restrict their input(s) to be classes that are
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//! derived from Base (e.g. Mat, Op, Glue, diagview, subview).
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//! A Base object can be converted to a Mat object by the unwrap class.
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template<typename elem_type, typename derived>
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struct Base
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: public Base_inv<derived, is_supported_blas_type<elem_type>::value>::result
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, public Base_eval<elem_type, derived, is_Mat<derived>::value>::result
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, public Base_trans<derived, is_cx<elem_type>::value>::result
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{
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arma_inline const derived& get_ref() const;
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inline void print( const std::string extra_text = "") const;
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inline void print(std::ostream& user_stream, const std::string extra_text = "") const;
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inline void raw_print( const std::string extra_text = "") const;
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inline void raw_print(std::ostream& user_stream, const std::string extra_text = "") const;
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inline arma_warn_unused elem_type min() const;
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inline arma_warn_unused elem_type max() const;
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inline elem_type min(uword& index_of_min_val) const;
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inline elem_type max(uword& index_of_max_val) const;
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inline elem_type min(uword& row_of_min_val, uword& col_of_min_val) const;
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inline elem_type max(uword& row_of_max_val, uword& col_of_max_val) const;
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};
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//! @}
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