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tvmet/xpr/BinOperator.h@15:9c5aaeda36dc, 2013-04-06 (annotated)
- Committer:
- madcowswe
- Date:
- Sat Apr 06 20:57:54 2013 +0000
- Revision:
- 15:9c5aaeda36dc
Encoders fairly tuned, still has random noise in it
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
madcowswe | 15:9c5aaeda36dc | 1 | /* |
madcowswe | 15:9c5aaeda36dc | 2 | * Tiny Vector Matrix Library |
madcowswe | 15:9c5aaeda36dc | 3 | * Dense Vector Matrix Libary of Tiny size using Expression Templates |
madcowswe | 15:9c5aaeda36dc | 4 | * |
madcowswe | 15:9c5aaeda36dc | 5 | * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net> |
madcowswe | 15:9c5aaeda36dc | 6 | * |
madcowswe | 15:9c5aaeda36dc | 7 | * This library is free software; you can redistribute it and/or |
madcowswe | 15:9c5aaeda36dc | 8 | * modify it under the terms of the GNU Lesser General Public |
madcowswe | 15:9c5aaeda36dc | 9 | * License as published by the Free Software Foundation; either |
madcowswe | 15:9c5aaeda36dc | 10 | * version 2.1 of the License, or (at your option) any later version. |
madcowswe | 15:9c5aaeda36dc | 11 | * |
madcowswe | 15:9c5aaeda36dc | 12 | * This library is distributed in the hope that it will be useful, |
madcowswe | 15:9c5aaeda36dc | 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
madcowswe | 15:9c5aaeda36dc | 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
madcowswe | 15:9c5aaeda36dc | 15 | * Lesser General Public License for more details. |
madcowswe | 15:9c5aaeda36dc | 16 | * |
madcowswe | 15:9c5aaeda36dc | 17 | * You should have received a copy of the GNU Lesser General Public |
madcowswe | 15:9c5aaeda36dc | 18 | * License along with this library; if not, write to the Free Software |
madcowswe | 15:9c5aaeda36dc | 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
madcowswe | 15:9c5aaeda36dc | 20 | * |
madcowswe | 15:9c5aaeda36dc | 21 | * $Id: BinOperator.h,v 1.19 2007-06-23 15:58:59 opetzold Exp $ |
madcowswe | 15:9c5aaeda36dc | 22 | */ |
madcowswe | 15:9c5aaeda36dc | 23 | |
madcowswe | 15:9c5aaeda36dc | 24 | #ifndef TVMET_XPR_BINOPERATOR_H |
madcowswe | 15:9c5aaeda36dc | 25 | #define TVMET_XPR_BINOPERATOR_H |
madcowswe | 15:9c5aaeda36dc | 26 | |
madcowswe | 15:9c5aaeda36dc | 27 | #include <tvmet/TypePromotion.h> |
madcowswe | 15:9c5aaeda36dc | 28 | |
madcowswe | 15:9c5aaeda36dc | 29 | namespace tvmet { |
madcowswe | 15:9c5aaeda36dc | 30 | |
madcowswe | 15:9c5aaeda36dc | 31 | |
madcowswe | 15:9c5aaeda36dc | 32 | /** |
madcowswe | 15:9c5aaeda36dc | 33 | * \class XprBinOp BinOperator.h "tvmet/xpr/BinOperator.h" |
madcowswe | 15:9c5aaeda36dc | 34 | * \brief Binary operators working on two sub expressions. |
madcowswe | 15:9c5aaeda36dc | 35 | * |
madcowswe | 15:9c5aaeda36dc | 36 | * On acessing using the index operator() the binary operation will be |
madcowswe | 15:9c5aaeda36dc | 37 | * evaluated at compile time. |
madcowswe | 15:9c5aaeda36dc | 38 | */ |
madcowswe | 15:9c5aaeda36dc | 39 | template<class BinOp, class E1, class E2> |
madcowswe | 15:9c5aaeda36dc | 40 | class XprBinOp |
madcowswe | 15:9c5aaeda36dc | 41 | : public TvmetBase< XprBinOp<BinOp, E1, E2> > |
madcowswe | 15:9c5aaeda36dc | 42 | { |
madcowswe | 15:9c5aaeda36dc | 43 | XprBinOp(); |
madcowswe | 15:9c5aaeda36dc | 44 | XprBinOp& operator=(const XprBinOp&); |
madcowswe | 15:9c5aaeda36dc | 45 | |
madcowswe | 15:9c5aaeda36dc | 46 | public: |
madcowswe | 15:9c5aaeda36dc | 47 | typedef typename BinOp::value_type value_type; |
madcowswe | 15:9c5aaeda36dc | 48 | |
madcowswe | 15:9c5aaeda36dc | 49 | public: |
madcowswe | 15:9c5aaeda36dc | 50 | /** Complexity counter. */ |
madcowswe | 15:9c5aaeda36dc | 51 | enum { |
madcowswe | 15:9c5aaeda36dc | 52 | ops_lhs = E1::ops, |
madcowswe | 15:9c5aaeda36dc | 53 | ops_rhs = E2::ops, |
madcowswe | 15:9c5aaeda36dc | 54 | ops = 2 * (ops_lhs + ops_rhs) // lhs op rhs |
madcowswe | 15:9c5aaeda36dc | 55 | }; |
madcowswe | 15:9c5aaeda36dc | 56 | |
madcowswe | 15:9c5aaeda36dc | 57 | public: |
madcowswe | 15:9c5aaeda36dc | 58 | /** Constructor for two expressions. */ |
madcowswe | 15:9c5aaeda36dc | 59 | explicit XprBinOp(const E1& lhs, const E2& rhs) |
madcowswe | 15:9c5aaeda36dc | 60 | : m_lhs(lhs), m_rhs(rhs) |
madcowswe | 15:9c5aaeda36dc | 61 | { } |
madcowswe | 15:9c5aaeda36dc | 62 | |
madcowswe | 15:9c5aaeda36dc | 63 | /** Copy Constructor. Not explicit! */ |
madcowswe | 15:9c5aaeda36dc | 64 | #if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR) |
madcowswe | 15:9c5aaeda36dc | 65 | XprBinOp(const XprBinOp& e) |
madcowswe | 15:9c5aaeda36dc | 66 | : m_lhs(e.m_lhs), m_rhs(e.m_rhs) |
madcowswe | 15:9c5aaeda36dc | 67 | { } |
madcowswe | 15:9c5aaeda36dc | 68 | #endif |
madcowswe | 15:9c5aaeda36dc | 69 | |
madcowswe | 15:9c5aaeda36dc | 70 | /** Index operator, evaluates the expression inside. */ |
madcowswe | 15:9c5aaeda36dc | 71 | value_type operator()(std::size_t i) const { |
madcowswe | 15:9c5aaeda36dc | 72 | return BinOp::apply_on(m_lhs(i), m_rhs(i)); |
madcowswe | 15:9c5aaeda36dc | 73 | } |
madcowswe | 15:9c5aaeda36dc | 74 | |
madcowswe | 15:9c5aaeda36dc | 75 | /** Index operator for arrays/matrices */ |
madcowswe | 15:9c5aaeda36dc | 76 | value_type operator()(std::size_t i, std::size_t j) const { |
madcowswe | 15:9c5aaeda36dc | 77 | return BinOp::apply_on(m_lhs(i, j), m_rhs(i, j)); |
madcowswe | 15:9c5aaeda36dc | 78 | } |
madcowswe | 15:9c5aaeda36dc | 79 | |
madcowswe | 15:9c5aaeda36dc | 80 | public: // debugging Xpr parse tree |
madcowswe | 15:9c5aaeda36dc | 81 | void print_xpr(std::ostream& os, std::size_t l=0) const { |
madcowswe | 15:9c5aaeda36dc | 82 | os << IndentLevel(l++) |
madcowswe | 15:9c5aaeda36dc | 83 | << "XprBinOp[O="<< ops << ", (O1=" << ops_lhs << ", O2=" << ops_rhs << ")]<" |
madcowswe | 15:9c5aaeda36dc | 84 | << std::endl; |
madcowswe | 15:9c5aaeda36dc | 85 | BinOp::print_xpr(os, l); |
madcowswe | 15:9c5aaeda36dc | 86 | m_lhs.print_xpr(os, l); |
madcowswe | 15:9c5aaeda36dc | 87 | m_rhs.print_xpr(os, l); |
madcowswe | 15:9c5aaeda36dc | 88 | os << IndentLevel(--l) |
madcowswe | 15:9c5aaeda36dc | 89 | << ">," << std::endl; |
madcowswe | 15:9c5aaeda36dc | 90 | } |
madcowswe | 15:9c5aaeda36dc | 91 | |
madcowswe | 15:9c5aaeda36dc | 92 | private: |
madcowswe | 15:9c5aaeda36dc | 93 | const E1 m_lhs; |
madcowswe | 15:9c5aaeda36dc | 94 | const E2 m_rhs; |
madcowswe | 15:9c5aaeda36dc | 95 | }; |
madcowswe | 15:9c5aaeda36dc | 96 | |
madcowswe | 15:9c5aaeda36dc | 97 | |
madcowswe | 15:9c5aaeda36dc | 98 | } // namespace tvmet |
madcowswe | 15:9c5aaeda36dc | 99 | |
madcowswe | 15:9c5aaeda36dc | 100 | #endif // TVMET_XPR_BINOPERATOR_H |
madcowswe | 15:9c5aaeda36dc | 101 | |
madcowswe | 15:9c5aaeda36dc | 102 | // Local Variables: |
madcowswe | 15:9c5aaeda36dc | 103 | // mode:C++ |
madcowswe | 15:9c5aaeda36dc | 104 | // tab-width:8 |
madcowswe | 15:9c5aaeda36dc | 105 | // End: |