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tvmet/xpr/Vector.h@25:143b19c1fb05, 2012-10-17 (annotated)

Committer:
narshu
Date:
Wed Oct 17 22:22:28 2012 +0000
Revision:
25:143b19c1fb05
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narshu 25:143b19c1fb05 1 /*
narshu 25:143b19c1fb05 2 * Tiny Vector Matrix Library
narshu 25:143b19c1fb05 3 * Dense Vector Matrix Libary of Tiny size using Expression Templates
narshu 25:143b19c1fb05 4 *
narshu 25:143b19c1fb05 5 * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>
narshu 25:143b19c1fb05 6 *
narshu 25:143b19c1fb05 7 * This library is free software; you can redistribute it and/or
narshu 25:143b19c1fb05 8 * modify it under the terms of the GNU lesser General Public
narshu 25:143b19c1fb05 9 * License as published by the Free Software Foundation; either
narshu 25:143b19c1fb05 10 * version 2.1 of the License, or (at your option) any later version.
narshu 25:143b19c1fb05 11 *
narshu 25:143b19c1fb05 12 * This library is distributed in the hope that it will be useful,
narshu 25:143b19c1fb05 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
narshu 25:143b19c1fb05 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
narshu 25:143b19c1fb05 15 * lesser General Public License for more details.
narshu 25:143b19c1fb05 16 *
narshu 25:143b19c1fb05 17 * You should have received a copy of the GNU lesser General Public
narshu 25:143b19c1fb05 18 * License along with this library; if not, write to the Free Software
narshu 25:143b19c1fb05 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
narshu 25:143b19c1fb05 20 *
narshu 25:143b19c1fb05 21 * $Id: Vector.h,v 1.28 2007-06-23 15:59:00 opetzold Exp $
narshu 25:143b19c1fb05 22 */
narshu 25:143b19c1fb05 23
narshu 25:143b19c1fb05 24 #ifndef TVMET_XPR_VECTOR_H
narshu 25:143b19c1fb05 25 #define TVMET_XPR_VECTOR_H
narshu 25:143b19c1fb05 26
narshu 25:143b19c1fb05 27 #include <tvmet/meta/Vector.h>
narshu 25:143b19c1fb05 28 #include <tvmet/loop/Vector.h>
narshu 25:143b19c1fb05 29
narshu 25:143b19c1fb05 30 namespace tvmet {
narshu 25:143b19c1fb05 31
narshu 25:143b19c1fb05 32
narshu 25:143b19c1fb05 33 /* forwards */
narshu 25:143b19c1fb05 34 template <class T, std::size_t Sz> class Vector;
narshu 25:143b19c1fb05 35
narshu 25:143b19c1fb05 36 /**
narshu 25:143b19c1fb05 37 * \class XprVector Vector.h "tvmet/xpr/Vector.h"
narshu 25:143b19c1fb05 38 * \brief Represents the expression for vectors at any node in the parse tree.
narshu 25:143b19c1fb05 39 *
narshu 25:143b19c1fb05 40 * Specifically, XprVector is the class that wraps the expression, and the
narshu 25:143b19c1fb05 41 * expression itself is represented by the template parameter E. The
narshu 25:143b19c1fb05 42 * class XprVector is known as an anonymizing expression wrapper because
narshu 25:143b19c1fb05 43 * it can hold any subexpression of arbitrary complexity, allowing
narshu 25:143b19c1fb05 44 * clients to work with any expression by holding on to it via the
narshu 25:143b19c1fb05 45 * wrapper, without having to know the name of the type object that
narshu 25:143b19c1fb05 46 * actually implements the expression.
narshu 25:143b19c1fb05 47 * \note leave the Ctors non-explicit to allow implicit type conversation.
narshu 25:143b19c1fb05 48 */
narshu 25:143b19c1fb05 49 template<class E, std::size_t Sz>
narshu 25:143b19c1fb05 50 class XprVector : public TvmetBase< XprVector<E, Sz> >
narshu 25:143b19c1fb05 51 {
narshu 25:143b19c1fb05 52 XprVector();
narshu 25:143b19c1fb05 53 XprVector& operator=(const XprVector&);
narshu 25:143b19c1fb05 54
narshu 25:143b19c1fb05 55 public:
narshu 25:143b19c1fb05 56 typedef typename E::value_type value_type;
narshu 25:143b19c1fb05 57
narshu 25:143b19c1fb05 58 public:
narshu 25:143b19c1fb05 59 /** Dimensions. */
narshu 25:143b19c1fb05 60 enum {
narshu 25:143b19c1fb05 61 Size = Sz /**< The size of the vector. */
narshu 25:143b19c1fb05 62 };
narshu 25:143b19c1fb05 63
narshu 25:143b19c1fb05 64 public:
narshu 25:143b19c1fb05 65 /** Complexity counter */
narshu 25:143b19c1fb05 66 enum {
narshu 25:143b19c1fb05 67 ops_assign = Size,
narshu 25:143b19c1fb05 68 ops = E::ops,
narshu 25:143b19c1fb05 69 use_meta = ops_assign < TVMET_COMPLEXITY_V_ASSIGN_TRIGGER ? true : false
narshu 25:143b19c1fb05 70 };
narshu 25:143b19c1fb05 71
narshu 25:143b19c1fb05 72 public:
narshu 25:143b19c1fb05 73 /** Constructor. */
narshu 25:143b19c1fb05 74 explicit XprVector(const E& e)
narshu 25:143b19c1fb05 75 : m_expr(e)
narshu 25:143b19c1fb05 76 { }
narshu 25:143b19c1fb05 77
narshu 25:143b19c1fb05 78 /** Copy Constructor. Not explicit! */
narshu 25:143b19c1fb05 79 #if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR)
narshu 25:143b19c1fb05 80 XprVector(const XprVector& e)
narshu 25:143b19c1fb05 81 : m_expr(e.m_expr)
narshu 25:143b19c1fb05 82 { }
narshu 25:143b19c1fb05 83 #endif
narshu 25:143b19c1fb05 84
narshu 25:143b19c1fb05 85 /** const index operator for vectors. */
narshu 25:143b19c1fb05 86 value_type operator()(std::size_t i) const {
narshu 25:143b19c1fb05 87 TVMET_RT_CONDITION(i < Size, "XprVector Bounce Violation")
narshu 25:143b19c1fb05 88 return m_expr(i);
narshu 25:143b19c1fb05 89 }
narshu 25:143b19c1fb05 90
narshu 25:143b19c1fb05 91 /** const index operator for vectors. */
narshu 25:143b19c1fb05 92 value_type operator[](std::size_t i) const {
narshu 25:143b19c1fb05 93 return this->operator()(i);
narshu 25:143b19c1fb05 94 }
narshu 25:143b19c1fb05 95
narshu 25:143b19c1fb05 96 private:
narshu 25:143b19c1fb05 97 /** Wrapper for meta assign. */
narshu 25:143b19c1fb05 98 template<class Dest, class Src, class Assign>
narshu 25:143b19c1fb05 99 static inline
narshu 25:143b19c1fb05 100 void do_assign(dispatch<true>, Dest& dest, const Src& src, const Assign& assign_fn) {
narshu 25:143b19c1fb05 101 meta::Vector<Size, 0>::assign(dest, src, assign_fn);
narshu 25:143b19c1fb05 102 }
narshu 25:143b19c1fb05 103
narshu 25:143b19c1fb05 104 /** Wrapper for loop assign. */
narshu 25:143b19c1fb05 105 template<class Dest, class Src, class Assign>
narshu 25:143b19c1fb05 106 static inline
narshu 25:143b19c1fb05 107 void do_assign(dispatch<false>, Dest& dest, const Src& src, const Assign& assign_fn) {
narshu 25:143b19c1fb05 108 loop::Vector<Size>::assign(dest, src, assign_fn);
narshu 25:143b19c1fb05 109 }
narshu 25:143b19c1fb05 110
narshu 25:143b19c1fb05 111 public:
narshu 25:143b19c1fb05 112 /** assign this expression to Vector dest. */
narshu 25:143b19c1fb05 113 template<class Dest, class Assign>
narshu 25:143b19c1fb05 114 void assign_to(Dest& dest, const Assign& assign_fn) const {
narshu 25:143b19c1fb05 115 /* here is a way for caching, since each complex 'Node'
narshu 25:143b19c1fb05 116 is of type XprVector. */
narshu 25:143b19c1fb05 117 do_assign(dispatch<use_meta>(), dest, *this, assign_fn);
narshu 25:143b19c1fb05 118 }
narshu 25:143b19c1fb05 119
narshu 25:143b19c1fb05 120 public: // debugging Xpr parse tree
narshu 25:143b19c1fb05 121 void print_xpr(std::ostream& os, std::size_t l=0) const {
narshu 25:143b19c1fb05 122 os << IndentLevel(l++)
narshu 25:143b19c1fb05 123 << "XprVector["
narshu 25:143b19c1fb05 124 << (use_meta ? "M" : "L") << ", O=" << ops << "]<"
narshu 25:143b19c1fb05 125 << std::endl;
narshu 25:143b19c1fb05 126 m_expr.print_xpr(os, l);
narshu 25:143b19c1fb05 127 os << IndentLevel(l)
narshu 25:143b19c1fb05 128 << "Sz=" << Size << std::endl;
narshu 25:143b19c1fb05 129 os << IndentLevel(--l) << ">"
narshu 25:143b19c1fb05 130 << ((l != 0) ? "," : "") << std::endl;
narshu 25:143b19c1fb05 131 }
narshu 25:143b19c1fb05 132
narshu 25:143b19c1fb05 133 private:
narshu 25:143b19c1fb05 134 const E m_expr;
narshu 25:143b19c1fb05 135 };
narshu 25:143b19c1fb05 136
narshu 25:143b19c1fb05 137
narshu 25:143b19c1fb05 138 } // namespace tvmet
narshu 25:143b19c1fb05 139
narshu 25:143b19c1fb05 140 #include <tvmet/Functional.h>
narshu 25:143b19c1fb05 141
narshu 25:143b19c1fb05 142 #include <tvmet/xpr/BinOperator.h>
narshu 25:143b19c1fb05 143 #include <tvmet/xpr/UnOperator.h>
narshu 25:143b19c1fb05 144 #include <tvmet/xpr/Literal.h>
narshu 25:143b19c1fb05 145
narshu 25:143b19c1fb05 146 #include <tvmet/xpr/VectorFunctions.h>
narshu 25:143b19c1fb05 147 #include <tvmet/xpr/VectorBinaryFunctions.h>
narshu 25:143b19c1fb05 148 #include <tvmet/xpr/VectorUnaryFunctions.h>
narshu 25:143b19c1fb05 149 #include <tvmet/xpr/VectorOperators.h>
narshu 25:143b19c1fb05 150 #include <tvmet/xpr/Eval.h>
narshu 25:143b19c1fb05 151
narshu 25:143b19c1fb05 152 #endif // TVMET_XPR_VECTOR_H
narshu 25:143b19c1fb05 153
narshu 25:143b19c1fb05 154 // Local Variables:
narshu 25:143b19c1fb05 155 // mode:C++
narshu 25:143b19c1fb05 156 // tab-width:8
narshu 25:143b19c1fb05 157 // End: