STK_UnaryOperators.h

Go to the documentation of this file.

/*--------------------------------------------------------------------*/
/*     Copyright (C) 2004-2016  Serge Iovleff, Université Lille 1, Inria
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
    License along with this program; if not, write to the
    Free Software Foundation, Inc.,
    59 Temple Place,
    Suite 330,
    Boston, MA 02111-1307
    USA
 
    Contact : S..._Dot_I..._At_stkpp_Dot_org (see copyright for ...)
*/
 
/*
 * Project:  stkpp::Arrays
 * created on: 17 oct. 2012
 * Author:   iovleff, S..._Dot_I..._At_stkpp_Dot_org (see copyright for ...)
 **/
 
#ifndef STK_UNARYOPERATORS_H
#define STK_UNARYOPERATORS_H
 
namespace STK
{
// forward declaration
template<typename UnaryOp, typename Lhs> class UnaryOperator;
 
namespace hidden
{
template<typename UnaryOp, typename Lhs>
struct Traits< UnaryOperator <UnaryOp, Lhs> >
{
  enum
  {
      structure_ = Traits<Lhs>::structure_,
      orient_    = Traits<Lhs>::orient_,
      sizeRows_  = Traits<Lhs>::sizeRows_,
      sizeCols_  = Traits<Lhs>::sizeCols_,
      storage_   = Traits<Lhs>::storage_
  };
  typedef RowOperator<UnaryOperator <UnaryOp, Lhs> > Row;
  typedef ColOperator<UnaryOperator <UnaryOp, Lhs> > Col;
 
  typedef typename UnaryOp::result_type Type;
  typedef typename UnaryOp::result_type TypeConst;
};
 
} // end namespace hidden
 
// forward declaration
template<typename UnaryOp, typename Lhs>
class UnaryOperatorBase;
 
 
template<typename UnaryOp,  typename Lhs>
class UnaryOperator: public ExprBase< UnaryOperator<UnaryOp, Lhs> >, public TRef<1>
{
  public:
    typedef ExprBase<  UnaryOperator<UnaryOp, Lhs> > Base;
    typedef typename hidden::Traits< UnaryOperator<UnaryOp, Lhs> >::Type Type;
    typedef typename hidden::Traits< UnaryOperator<UnaryOp, Lhs> >::TypeConst TypeConst;
 
    enum
    {
        structure_ = hidden::Traits< UnaryOperator >::structure_,
        orient_    = hidden::Traits< UnaryOperator >::orient_,
        sizeRows_  = hidden::Traits< UnaryOperator >::sizeRows_,
        sizeCols_  = hidden::Traits< UnaryOperator >::sizeCols_,
        storage_   = hidden::Traits< UnaryOperator >::storage_
    };
    typedef TRange<sizeRows_> RowRange;
    typedef TRange<sizeCols_> ColRange;
 
    inline UnaryOperator( Lhs const& lhs, UnaryOp const& functor = UnaryOp())
                       : Base(), lhs_(lhs), functor_(functor)
    {}
    inline RowRange const& rowsImpl() const { return lhs_.rows();}
    inline ColRange const& colsImpl() const { return lhs_.cols();}
 
    inline Lhs const& lhs() const { return lhs_; }
    inline UnaryOp const& functor() const { return functor_; }
 
    inline TypeConst elt2Impl(int i, int j) const { return functor_(lhs_.elt(i, j));}
    inline TypeConst elt1Impl(int i) const { return functor_(lhs_.elt(i));}
    inline TypeConst elt0Impl() const { return functor_(lhs_.elt());}
 
  protected:
    Lhs const& lhs_;
    UnaryOp const functor_;
};
 
} // namespace STK
 
#endif /* STK_UNARYOPERATORS_H */