Minor.h

/*
 * Expression Template Matrix Library
 *
 * Copyright (C) 2004 - 2006 Ricky Lung <mtlung@users.sourceforge.net>
 *
 * This library 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 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */


// Forward declaration
template<class Rep, class ExtraTParam> class StaticConstMinorView;
template<class Rep> class DynConstMinorView;

template<class Rep, class ExtraTParam>
class StaticMinorView : public StaticMinorViewTag
{
public:
    typedef StaticMinorView<Rep, ExtraTParam>       self_type;
    typedef StaticMinorViewTag                      exp_tag;
    typedef ExtraTParam                             extra_param_type;
    typedef StaticConstMinorView<Rep, ExtraTParam>  const_view_type;
    COMMON_VIEW_TYPEDEFS();

    enum {
        MI = ExtraTParam::INT1, // Minor row index
        MJ= ExtraTParam::INT2,  // Minor col index
        ROWS = super_type::ROWS == 0 ? 0 : super_type::ROWS-1,
        COLS = super_type::COLS == 0 ? 0 : super_type::COLS-1,
        IsLinear = true,
        IsLinearRecursive = IsLinear && super_type::IsLinearRecursive,
        ENOP = Rep::ENOP == -1 ? -1 : Rep::ENOP + 2,    // Complexity from the 2 comparisons and 2 additions
        TNOP = (ROWS == 0 || COLS == 0) ? -1 : ENOP * ROWS * COLS,
        EXPLevel = Rep::EXPLevel + 1
    };

    typedef Mat<DenseMatCon<value_type,ROWS,COLS>, EmptyErrorChecker> temp_type;

    /************************************************/
    // Constructors
    EXMAT_INLINE2 StaticMinorView(const self_type& self)
        : rep(self.rep) {}
    EXMAT_INLINE2 StaticMinorView(Rep& mat)
        : rep(mat) { ComErrCheck(); }
    template<class Rep2> EXMAT_INLINE2
    StaticMinorView(const Rep2& self, Rep& mat)
        : rep(mat) {
        ComErrCheck();
    }

    /************************************************/
    // Dimension information
    EXMAT_INLINE2 size_t size() const { return rows()*cols(); }
    EXMAT_INLINE2 size_t rows() const { return rep.rows()-1; }
    EXMAT_INLINE2 size_t cols() const { return rep.cols()-1; }
    /************************************************/
    // Index function (for internal use, no error checking applied)
    EXMAT_INLINE2 reference setAt(index_type i)
    {   return this->setAt(i/cols(), i%cols()); }
    EXMAT_INLINE2 const_reference getAt(index_type i) const
    {   return this->getAt(i/cols(), i%cols()); }
    EXMAT_INLINE2 reference setAt(index_type i, index_type j)
    {   return rep.setAt(i<MI?i:i+1, j<MJ?j:j+1);   }
    EXMAT_INLINE2 const_reference getAt(index_type i, index_type j) const
    {   return rep.getAt(i<MI?i:i+1, j<MJ?j:j+1);   }

private:
    // Compatibility error checking
    EXMAT_INLINE2 void ComErrCheck() {
        DefaultErrorChecker::AssertCompat(
            MI >= 0 && MJ >= 0 &&
            (MI < rep.rows()) && (MJ < rep.cols())
        );
    }
};
#ifdef minor
#   undef minor
#endif
#if !EXMAT_VC6

template<class Rep, class ErrChk, int MI, int MJ> EXMAT_INLINE2 static
Mat<ExpMat<StaticMinorView<Rep,TParamINT2<MI,MJ> > >, ErrChk>
minor(Mat<Rep, ErrChk>& mat, Int2Type<MI>, Int2Type<MJ>) {
    return Mat<ExpMat<StaticMinorView<Rep,TParamINT2<MI,MJ> > >, ErrChk>(
        ExpMat<StaticMinorView<Rep,TParamINT2<MI,MJ> > >(mat)
    );
}
#endif  // !EXMAT_VC6


template<class Rep, class ExtraTParam>
class StaticConstMinorView : public StaticMinorViewTag
{
public:
    typedef StaticConstMinorView<Rep, ExtraTParam>  self_type;
    typedef StaticMinorViewTag                      exp_tag;
    typedef ExtraTParam                             extra_param_type;
    COMMON_CONST_VIEW_TYPEDEFS();

    enum {
        MI = ExtraTParam::INT1, // Minor row index
        MJ= ExtraTParam::INT2,  // Minor col index
        ROWS = super_type::ROWS == 0 ? 0 : super_type::ROWS-1,
        COLS = super_type::COLS == 0 ? 0 : super_type::COLS-1,
        IsLinear = true,
        IsLinearRecursive = IsLinear && super_type::IsLinearRecursive,
        ENOP = Rep::ENOP == -1 ? -1 : Rep::ENOP + 2,    // Complexity from the 2 comparisons and 2 additions
        TNOP = (ROWS == 0 || COLS == 0) ? -1 : ENOP * ROWS * COLS,
        EXPLevel = Rep::EXPLevel + 1
    };

    typedef Mat<DenseMatCon<value_type,ROWS,COLS>, EmptyErrorChecker> temp_type;

    /************************************************/
    // Constructors
    EXMAT_INLINE2 StaticConstMinorView(const self_type& self)
        : rep(self.rep) {}
    EXMAT_INLINE2 StaticConstMinorView(const Rep& mat)
        : rep(mat) { ComErrCheck(); }
    template<class Rep2> EXMAT_INLINE2
    StaticConstMinorView(const Rep2& self, const Rep& mat)
        : rep(mat) {
        ComErrCheck();
    }

    /************************************************/
    // Dimension information
    EXMAT_INLINE2 size_t size() const { return rows()*cols(); }
    EXMAT_INLINE2 size_t rows() const { return rep.rows()-1; }
    EXMAT_INLINE2 size_t cols() const { return rep.cols()-1; }
    /************************************************/
    // Index function (for internal use, no error checking applied)
    EXMAT_INLINE2 const_reference getAt(index_type i) const
    {   return this->getAt(i/cols(), i%cols()); }
    EXMAT_INLINE2 const_reference getAt(index_type i, index_type j) const
    {   return rep.getAt(i<MI?i:i+1, j<MJ?j:j+1);   }

private:
    // Compatibility error checking
    EXMAT_INLINE2 void ComErrCheck() {
        DefaultErrorChecker::AssertCompat(
            MI >= 0 && MJ >= 0 &&
            (MI < rep.rows()) && (MJ < rep.cols())
        );
    }
};
#if !EXMAT_VC6

template<class Rep, class ErrChk, int MI, int MJ> EXMAT_INLINE2 static
const Mat<ExpMat<StaticConstMinorView<Rep,TParamINT2<MI,MJ> > >, ErrChk>
minor(const Mat<Rep, ErrChk>& mat, Int2Type<MI>, Int2Type<MJ>) {
    return Mat<ExpMat<StaticConstMinorView<Rep,TParamINT2<MI,MJ> > >, ErrChk>(
        ExpMat<StaticConstMinorView<Rep,TParamINT2<MI,MJ> > >(mat)
    );
}
#endif  // !EXMAT_VC6


template<class Rep>
class DynMinorView : public DynMinorViewTag
{
public:
    typedef DynMinorView<Rep>       self_type;
    typedef DynMinorViewTag         exp_tag;
    typedef NullTag                 extra_param_type;
    typedef DynConstMinorView<Rep>  const_view_type;
    COMMON_VIEW_TYPEDEFS();

    enum {
        ROWS = super_type::ROWS == 0 ? 0 : super_type::ROWS-1,
        COLS = super_type::COLS == 0 ? 0 : super_type::COLS-1,
        IsLinear = true,
        IsLinearRecursive = IsLinear && super_type::IsLinearRecursive,
        ENOP = Rep::ENOP == -1 ? -1 : Rep::ENOP + 4,    // Complexity from the 2 comparisons and 2 additions
        TNOP = (ROWS == 0 || COLS == 0) ? -1 : ENOP * ROWS * COLS,
        EXPLevel = Rep::EXPLevel + 1
    };

    typedef Mat<DenseMatCon<value_type,ROWS,COLS>, EmptyErrorChecker> temp_type;

    /************************************************/
    // Constructors
    EXMAT_INLINE2 DynMinorView(const self_type& self)
        : rep(self.rep), mi(self.mi), mj(self.mj) {}
    EXMAT_INLINE2 DynMinorView(Rep& mat, size_t i, size_t j)
        : rep(mat), mi(i), mj(j) { ComErrCheck(); }
    template<class Rep2> EXMAT_INLINE2
    DynMinorView(const Rep2& self, Rep& mat)
        : rep(mat), mi(self.mi), mj(self.mj) { ComErrCheck(); }

    /************************************************/
    // Dimension information
    EXMAT_INLINE2 size_t size() const { return rows()*cols(); }
    EXMAT_INLINE2 size_t rows() const { return rep.rows()-1; }
    EXMAT_INLINE2 size_t cols() const { return rep.cols()-1; }
    /************************************************/
    // Index function (for internal use, no error checking applied)
    EXMAT_INLINE2 reference setAt(index_type i)
    {   return this->setAt(i/cols(), i%cols()); }
    EXMAT_INLINE2 const_reference getAt(index_type i) const
    {   return this->getAt(i/cols(), i%cols()); }
    EXMAT_INLINE2 reference setAt(index_type i, index_type j)
    {   return rep.setAt(i<mi?i:i+1, j<mj?j:j+1);   }
    EXMAT_INLINE2 const_reference getAt(index_type i, index_type j) const
    {   return rep.getAt(i<mi?i:i+1, j<mj?j:j+1);   }

public:
    const size_t mi, mj;

private:
    // Compatibility error checking
    EXMAT_INLINE2 void ComErrCheck() {
        DefaultErrorChecker::AssertCompat(
            mi >= 0 && mj >= 0 &&
            (mi < rep.rows()) && (mj < rep.cols())
        );
    }
};
template<class Rep, class ErrChk> EXMAT_INLINE2 static
Mat<ExpMat<DynMinorView<Rep> >, ErrChk>
minor(Mat<Rep, ErrChk>& mat, size_t i, size_t j) {
    return Mat<ExpMat<DynMinorView<Rep> >, ErrChk>(ExpMat<DynMinorView<Rep> >(mat, i, j));
}


template<class Rep>
class DynConstMinorView : public DynMinorViewTag
{
public:
    typedef DynConstMinorView<Rep>  self_type;
    typedef DynMinorViewTag         exp_tag;
    typedef NullTag                 extra_param_type;
    COMMON_CONST_VIEW_TYPEDEFS();

    enum {
        ROWS = super_type::ROWS == 0 ? 0 : super_type::ROWS-1,
        COLS = super_type::COLS == 0 ? 0 : super_type::COLS-1,
        IsLinear = true,
        IsLinearRecursive = IsLinear && super_type::IsLinearRecursive,
        ENOP = Rep::ENOP == -1 ? -1 : Rep::ENOP + 4,    // Complexity from the 2 comparisons and 2 additions
        TNOP = (ROWS == 0 || COLS == 0) ? -1 : ENOP * ROWS * COLS,
        EXPLevel = Rep::EXPLevel + 1
    };

    typedef Mat<DenseMatCon<value_type,ROWS,COLS>, EmptyErrorChecker> temp_type;

    /************************************************/
    // Constructors
    EXMAT_INLINE2 DynConstMinorView(const self_type& self)
        : rep(self.rep), mi(self.mi), mj(self.mj) {}
    EXMAT_INLINE2 DynConstMinorView(const Rep& mat, size_t i, size_t j)
        : rep(mat), mi(i), mj(j) { ComErrCheck(); }
    template<class Rep2> EXMAT_INLINE2
    DynConstMinorView(const Rep2& self, const Rep& mat)
        : rep(mat), mi(self.mi), mj(self.mj) { ComErrCheck(); }

    /************************************************/
    // Dimension information
    EXMAT_INLINE2 size_t size() const { return rows()*cols(); }
    EXMAT_INLINE2 size_t rows() const { return rep.rows()-1; }
    EXMAT_INLINE2 size_t cols() const { return rep.cols()-1; }
    /************************************************/
    // Index function (for internal use, no error checking applied)
    EXMAT_INLINE2 const_reference getAt(index_type i) const
    {   return this->getAt(i/cols(), i%cols()); }
    EXMAT_INLINE2 const_reference getAt(index_type i, index_type j) const
    {   return rep.getAt(i<mi?i:i+1, j<mj?j:j+1);   }

public:
    const size_t mi, mj;

private:
    // Compatibility error checking
    EXMAT_INLINE2 void ComErrCheck() {
        DefaultErrorChecker::AssertCompat(
            mi >= 0 && mj >= 0 &&
            (mi < rep.rows()) && (mj < rep.cols())
        );
    }
};
template<class Rep, class ErrChk> EXMAT_INLINE2 static
const Mat<ExpMat<DynConstMinorView<Rep> >, ErrChk>
minor(const Mat<Rep, ErrChk>& mat, size_t i, size_t j) {
    return Mat<ExpMat<DynConstMinorView<Rep> >, ErrChk>(ExpMat<DynConstMinorView<Rep> >(mat, i, j));
}

---