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armadillo-code/include/armadillo_bits/SpSubview_meat.hpp
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2021-10-07 13:04:24 +10:00

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// SPDX-License-Identifier: Apache-2.0
//
// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
// Copyright 2008-2016 National ICT Australia (NICTA)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------
//! \addtogroup SpSubview
//! @{
template<typename eT>
inline
SpSubview<eT>::~SpSubview()
{
arma_extra_debug_sigprint_this(this);
}
template<typename eT>
inline
SpSubview<eT>::SpSubview(const SpMat<eT>& in_m, const uword in_row1, const uword in_col1, const uword in_n_rows, const uword in_n_cols)
: m(in_m)
, aux_row1(in_row1)
, aux_col1(in_col1)
, n_rows(in_n_rows)
, n_cols(in_n_cols)
, n_elem(in_n_rows * in_n_cols)
, n_nonzero(0)
{
arma_extra_debug_sigprint_this(this);
m.sync_csc();
// There must be a O(1) way to do this
uword lend = m.col_ptrs[in_col1 + in_n_cols];
uword lend_row = in_row1 + in_n_rows;
uword count = 0;
for(uword i = m.col_ptrs[in_col1]; i < lend; ++i)
{
const uword m_row_indices_i = m.row_indices[i];
const bool condition = (m_row_indices_i >= in_row1) && (m_row_indices_i < lend_row);
count += condition ? uword(1) : uword(0);
}
access::rw(n_nonzero) = count;
}
template<typename eT>
inline
SpSubview<eT>::SpSubview(const SpSubview<eT>& in)
: m (in.m )
, aux_row1 (in.aux_row1 )
, aux_col1 (in.aux_col1 )
, n_rows (in.n_rows )
, n_cols (in.n_cols )
, n_elem (in.n_elem )
, n_nonzero(in.n_nonzero)
{
arma_extra_debug_sigprint(arma_str::format("this = %x in = %x") % this % &in);
}
template<typename eT>
inline
SpSubview<eT>::SpSubview(SpSubview<eT>&& in)
: m (in.m )
, aux_row1 (in.aux_row1 )
, aux_col1 (in.aux_col1 )
, n_rows (in.n_rows )
, n_cols (in.n_cols )
, n_elem (in.n_elem )
, n_nonzero(in.n_nonzero)
{
arma_extra_debug_sigprint(arma_str::format("this = %x in = %x") % this % &in);
// for paranoia
access::rw(in.aux_row1 ) = 0;
access::rw(in.aux_col1 ) = 0;
access::rw(in.n_rows ) = 0;
access::rw(in.n_cols ) = 0;
access::rw(in.n_elem ) = 0;
access::rw(in.n_nonzero) = 0;
}
template<typename eT>
inline
const SpSubview<eT>&
SpSubview<eT>::operator+=(const eT val)
{
arma_extra_debug_sigprint();
if(val == eT(0)) { return *this; }
Mat<eT> tmp( (*this).n_rows, (*this).n_cols, arma_nozeros_indicator() );
tmp.fill(val);
return (*this).operator=( (*this) + tmp );
}
template<typename eT>
inline
const SpSubview<eT>&
SpSubview<eT>::operator-=(const eT val)
{
arma_extra_debug_sigprint();
if(val == eT(0)) { return *this; }
Mat<eT> tmp( (*this).n_rows, (*this).n_cols, arma_nozeros_indicator() );
tmp.fill(val);
return (*this).operator=( (*this) - tmp );
}
template<typename eT>
inline
const SpSubview<eT>&
SpSubview<eT>::operator*=(const eT val)
{
arma_extra_debug_sigprint();
if(val == eT(0)) { (*this).zeros(); return *this; }
if((n_elem == 0) || (n_nonzero == 0)) { return *this; }
m.sync_csc();
m.invalidate_cache();
const uword lstart_row = aux_row1;
const uword lend_row = aux_row1 + n_rows;
const uword lstart_col = aux_col1;
const uword lend_col = aux_col1 + n_cols;
const uword* m_row_indices = m.row_indices;
eT* m_values = access::rwp(m.values);
bool has_zero = false;
for(uword c = lstart_col; c < lend_col; ++c)
{
const uword r_start = m.col_ptrs[c ];
const uword r_end = m.col_ptrs[c + 1];
for(uword r = r_start; r < r_end; ++r)
{
const uword m_row_indices_r = m_row_indices[r];
if( (m_row_indices_r >= lstart_row) && (m_row_indices_r < lend_row) )
{
eT& m_values_r = m_values[r];
m_values_r *= val;
if(m_values_r == eT(0)) { has_zero = true; }
}
}
}
if(has_zero)
{
const uword old_m_n_nonzero = m.n_nonzero;
access::rw(m).remove_zeros();
if(m.n_nonzero != old_m_n_nonzero)
{
access::rw(n_nonzero) = n_nonzero - (old_m_n_nonzero - m.n_nonzero);
}
}
return *this;
}
template<typename eT>
inline
const SpSubview<eT>&
SpSubview<eT>::operator/=(const eT val)
{
arma_extra_debug_sigprint();
arma_debug_check( (val == eT(0)), "element-wise division: division by zero" );
m.sync_csc();
m.invalidate_cache();
const uword lstart_row = aux_row1;
const uword lend_row = aux_row1 + n_rows;
const uword lstart_col = aux_col1;
const uword lend_col = aux_col1 + n_cols;
const uword* m_row_indices = m.row_indices;
eT* m_values = access::rwp(m.values);
bool has_zero = false;
for(uword c = lstart_col; c < lend_col; ++c)
{
const uword r_start = m.col_ptrs[c ];
const uword r_end = m.col_ptrs[c + 1];
for(uword r = r_start; r < r_end; ++r)
{
const uword m_row_indices_r = m_row_indices[r];
if( (m_row_indices_r >= lstart_row) && (m_row_indices_r < lend_row) )
{
eT& m_values_r = m_values[r];
m_values_r /= val;
if(m_values_r == eT(0)) { has_zero = true; }
}
}
}
if(has_zero)
{
const uword old_m_n_nonzero = m.n_nonzero;
access::rw(m).remove_zeros();
if(m.n_nonzero != old_m_n_nonzero)
{
access::rw(n_nonzero) = n_nonzero - (old_m_n_nonzero - m.n_nonzero);
}
}
return *this;
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator=(const Base<eT, T1>& in)
{
arma_extra_debug_sigprint();
if(is_same_type< T1, Gen<Mat<eT>, gen_zeros> >::yes)
{
const Proxy<T1> P(in.get_ref());
arma_debug_assert_same_size(n_rows, n_cols, P.get_n_rows(), P.get_n_cols(), "insertion into sparse submatrix");
(*this).zeros();
return *this;
}
if(is_same_type< T1, Gen<Mat<eT>, gen_eye> >::yes)
{
const Proxy<T1> P(in.get_ref());
arma_debug_assert_same_size(n_rows, n_cols, P.get_n_rows(), P.get_n_cols(), "insertion into sparse submatrix");
(*this).eye();
return *this;
}
const quasi_unwrap<T1> U(in.get_ref());
arma_debug_assert_same_size(n_rows, n_cols, U.M.n_rows, U.M.n_cols, "insertion into sparse submatrix");
spglue_merge::subview_merge(*this, U.M);
return *this;
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator+=(const Base<eT, T1>& x)
{
arma_extra_debug_sigprint();
return (*this).operator=( (*this) + x.get_ref() );
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator-=(const Base<eT, T1>& x)
{
arma_extra_debug_sigprint();
return (*this).operator=( (*this) - x.get_ref() );
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator*=(const Base<eT, T1>& x)
{
arma_extra_debug_sigprint();
SpMat<eT> tmp(*this);
tmp *= x.get_ref();
return (*this).operator=(tmp);
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator%=(const Base<eT, T1>& x)
{
arma_extra_debug_sigprint();
return (*this).operator=( (*this) % x.get_ref() );
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator/=(const Base<eT, T1>& x)
{
arma_extra_debug_sigprint();
return (*this).operator=( (*this) / x.get_ref() );
}
template<typename eT>
inline
const SpSubview<eT>&
SpSubview<eT>::operator=(const SpSubview<eT>& x)
{
arma_extra_debug_sigprint();
return (*this).operator_equ_common(x);
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator=(const SpBase<eT, T1>& x)
{
arma_extra_debug_sigprint();
return (*this).operator_equ_common( x.get_ref() );
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator_equ_common(const SpBase<eT, T1>& in)
{
arma_extra_debug_sigprint();
const unwrap_spmat<T1> U(in.get_ref());
arma_debug_assert_same_size(n_rows, n_cols, U.M.n_rows, U.M.n_cols, "insertion into sparse submatrix");
if(U.is_alias(m))
{
const SpMat<eT> tmp(U.M);
spglue_merge::subview_merge(*this, tmp);
}
else
{
spglue_merge::subview_merge(*this, U.M);
}
return *this;
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator+=(const SpBase<eT, T1>& x)
{
arma_extra_debug_sigprint();
// TODO: implement dedicated machinery
return (*this).operator=( (*this) + x.get_ref() );
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator-=(const SpBase<eT, T1>& x)
{
arma_extra_debug_sigprint();
// TODO: implement dedicated machinery
return (*this).operator=( (*this) - x.get_ref() );
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator*=(const SpBase<eT, T1>& x)
{
arma_extra_debug_sigprint();
return (*this).operator=( (*this) * x.get_ref() );
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator%=(const SpBase<eT, T1>& x)
{
arma_extra_debug_sigprint();
// TODO: implement dedicated machinery
return (*this).operator=( (*this) % x.get_ref() );
}
template<typename eT>
template<typename T1>
inline
const SpSubview<eT>&
SpSubview<eT>::operator/=(const SpBase<eT, T1>& x)
{
arma_extra_debug_sigprint();
// NOTE: use of this function is not advised; it is implemented only for completeness
SpProxy<T1> p(x.get_ref());
arma_debug_assert_same_size(n_rows, n_cols, p.get_n_rows(), p.get_n_cols(), "element-wise division");
if(p.is_alias(m) == false)
{
for(uword lcol = 0; lcol < n_cols; ++lcol)
for(uword lrow = 0; lrow < n_rows; ++lrow)
{
at(lrow,lcol) /= p.at(lrow,lcol);
}
}
else
{
const SpMat<eT> tmp(p.Q);
(*this).operator/=(tmp);
}
return *this;
}
//! apply a functor to each element
template<typename eT>
template<typename functor>
inline
void
SpSubview<eT>::for_each(functor F)
{
arma_extra_debug_sigprint();
m.sync_csc();
m.invalidate_cache();
const uword lstart_row = aux_row1;
const uword lend_row = aux_row1 + n_rows;
const uword lstart_col = aux_col1;
const uword lend_col = aux_col1 + n_cols;
const uword* m_row_indices = m.row_indices;
eT* m_values = access::rwp(m.values);
bool has_zero = false;
for(uword c = lstart_col; c < lend_col; ++c)
{
const uword r_start = m.col_ptrs[c ];
const uword r_end = m.col_ptrs[c + 1];
for(uword r = r_start; r < r_end; ++r)
{
const uword m_row_indices_r = m_row_indices[r];
if( (m_row_indices_r >= lstart_row) && (m_row_indices_r < lend_row) )
{
eT& m_values_r = m_values[r];
F(m_values_r);
if(m_values_r == eT(0)) { has_zero = true; }
}
}
}
if(has_zero)
{
const uword old_m_n_nonzero = m.n_nonzero;
access::rw(m).remove_zeros();
if(m.n_nonzero != old_m_n_nonzero)
{
access::rw(n_nonzero) = n_nonzero - (old_m_n_nonzero - m.n_nonzero);
}
}
}
template<typename eT>
template<typename functor>
inline
void
SpSubview<eT>::for_each(functor F) const
{
arma_extra_debug_sigprint();
m.sync_csc();
const uword lstart_row = aux_row1;
const uword lend_row = aux_row1 + n_rows;
const uword lstart_col = aux_col1;
const uword lend_col = aux_col1 + n_cols;
const uword* m_row_indices = m.row_indices;
for(uword c = lstart_col; c < lend_col; ++c)
{
const uword r_start = m.col_ptrs[c ];
const uword r_end = m.col_ptrs[c + 1];
for(uword r = r_start; r < r_end; ++r)
{
const uword m_row_indices_r = m_row_indices[r];
if( (m_row_indices_r >= lstart_row) && (m_row_indices_r < lend_row) )
{
F(m.values[r]);
}
}
}
}
//! transform each element using a functor
template<typename eT>
template<typename functor>
inline
void
SpSubview<eT>::transform(functor F)
{
arma_extra_debug_sigprint();
m.sync_csc();
m.invalidate_cache();
const uword lstart_row = aux_row1;
const uword lend_row = aux_row1 + n_rows;
const uword lstart_col = aux_col1;
const uword lend_col = aux_col1 + n_cols;
const uword* m_row_indices = m.row_indices;
eT* m_values = access::rwp(m.values);
bool has_zero = false;
for(uword c = lstart_col; c < lend_col; ++c)
{
const uword r_start = m.col_ptrs[c ];
const uword r_end = m.col_ptrs[c + 1];
for(uword r = r_start; r < r_end; ++r)
{
const uword m_row_indices_r = m_row_indices[r];
if( (m_row_indices_r >= lstart_row) && (m_row_indices_r < lend_row) )
{
eT& m_values_r = m_values[r];
m_values_r = eT( F(m_values_r) );
if(m_values_r == eT(0)) { has_zero = true; }
}
}
}
if(has_zero)
{
const uword old_m_n_nonzero = m.n_nonzero;
access::rw(m).remove_zeros();
if(m.n_nonzero != old_m_n_nonzero)
{
access::rw(n_nonzero) = n_nonzero - (old_m_n_nonzero - m.n_nonzero);
}
}
}
template<typename eT>
inline
void
SpSubview<eT>::replace(const eT old_val, const eT new_val)
{
arma_extra_debug_sigprint();
if(old_val == eT(0))
{
if(new_val != eT(0))
{
Mat<eT> tmp(*this);
tmp.replace(old_val, new_val);
(*this).operator=(tmp);
}
return;
}
m.sync_csc();
m.invalidate_cache();
const uword lstart_row = aux_row1;
const uword lend_row = aux_row1 + n_rows;
const uword lstart_col = aux_col1;
const uword lend_col = aux_col1 + n_cols;
const uword* m_row_indices = m.row_indices;
eT* m_values = access::rwp(m.values);
if(arma_isnan(old_val))
{
for(uword c = lstart_col; c < lend_col; ++c)
{
const uword r_start = m.col_ptrs[c ];
const uword r_end = m.col_ptrs[c + 1];
for(uword r = r_start; r < r_end; ++r)
{
const uword m_row_indices_r = m_row_indices[r];
if( (m_row_indices_r >= lstart_row) && (m_row_indices_r < lend_row) )
{
eT& val = m_values[r];
val = (arma_isnan(val)) ? new_val : val;
}
}
}
}
else
{
for(uword c = lstart_col; c < lend_col; ++c)
{
const uword r_start = m.col_ptrs[c ];
const uword r_end = m.col_ptrs[c + 1];
for(uword r = r_start; r < r_end; ++r)
{
const uword m_row_indices_r = m_row_indices[r];
if( (m_row_indices_r >= lstart_row) && (m_row_indices_r < lend_row) )
{
eT& val = m_values[r];
val = (val == old_val) ? new_val : val;
}
}
}
}
if(new_val == eT(0)) { access::rw(m).remove_zeros(); }
}
template<typename eT>
inline
void
SpSubview<eT>::clean(const typename get_pod_type<eT>::result threshold)
{
arma_extra_debug_sigprint();
if((n_elem == 0) || (n_nonzero == 0)) { return; }
// TODO: replace with a more efficient implementation
SpMat<eT> tmp(*this);
tmp.clean(threshold);
if(is_cx<eT>::yes)
{
(*this).operator=(tmp);
}
else
if(tmp.n_nonzero != n_nonzero)
{
(*this).operator=(tmp);
}
}
template<typename eT>
inline
void
SpSubview<eT>::clamp(const eT min_val, const eT max_val)
{
arma_extra_debug_sigprint();
if(is_cx<eT>::no)
{
arma_debug_check( (access::tmp_real(min_val) > access::tmp_real(max_val)), "SpSubview::clamp(): min_val must be less than max_val" );
}
else
{
arma_debug_check( (access::tmp_real(min_val) > access::tmp_real(max_val)), "SpSubview::clamp(): real(min_val) must be less than real(max_val)" );
arma_debug_check( (access::tmp_imag(min_val) > access::tmp_imag(max_val)), "SpSubview::clamp(): imag(min_val) must be less than imag(max_val)" );
}
if((n_elem == 0) || (n_nonzero == 0)) { return; }
// TODO: replace with a more efficient implementation
SpMat<eT> tmp(*this);
tmp.clamp(min_val, max_val);
(*this).operator=(tmp);
}
template<typename eT>
inline
void
SpSubview<eT>::fill(const eT val)
{
arma_extra_debug_sigprint();
if(val != eT(0))
{
Mat<eT> tmp( (*this).n_rows, (*this).n_cols, arma_nozeros_indicator() );
tmp.fill(val);
(*this).operator=(tmp);
}
else
{
(*this).zeros();
}
}
template<typename eT>
inline
void
SpSubview<eT>::zeros()
{
arma_extra_debug_sigprint();
if((n_elem == 0) || (n_nonzero == 0)) { return; }
if((m.n_nonzero - n_nonzero) == 0)
{
access::rw(m).zeros();
access::rw(n_nonzero) = 0;
return;
}
SpMat<eT> tmp(arma_reserve_indicator(), m.n_rows, m.n_cols, m.n_nonzero - n_nonzero);
const uword sv_row_start = aux_row1;
const uword sv_col_start = aux_col1;
const uword sv_row_end = aux_row1 + n_rows - 1;
const uword sv_col_end = aux_col1 + n_cols - 1;
typename SpMat<eT>::const_iterator m_it = m.begin();
typename SpMat<eT>::const_iterator m_it_end = m.end();
uword tmp_count = 0;
for(; m_it != m_it_end; ++m_it)
{
const uword m_it_row = m_it.row();
const uword m_it_col = m_it.col();
const bool inside_box = ((m_it_row >= sv_row_start) && (m_it_row <= sv_row_end)) && ((m_it_col >= sv_col_start) && (m_it_col <= sv_col_end));
if(inside_box == false)
{
access::rw(tmp.values[tmp_count]) = (*m_it);
access::rw(tmp.row_indices[tmp_count]) = m_it_row;
access::rw(tmp.col_ptrs[m_it_col + 1])++;
++tmp_count;
}
}
for(uword i=0; i < tmp.n_cols; ++i)
{
access::rw(tmp.col_ptrs[i + 1]) += tmp.col_ptrs[i];
}
access::rw(m).steal_mem(tmp);
access::rw(n_nonzero) = 0;
}
template<typename eT>
inline
void
SpSubview<eT>::ones()
{
arma_extra_debug_sigprint();
(*this).fill(eT(1));
}
template<typename eT>
inline
void
SpSubview<eT>::eye()
{
arma_extra_debug_sigprint();
SpMat<eT> tmp;
tmp.eye( (*this).n_rows, (*this).n_cols );
(*this).operator=(tmp);
}
template<typename eT>
inline
void
SpSubview<eT>::randu()
{
arma_extra_debug_sigprint();
Mat<eT> tmp( (*this).n_rows, (*this).n_cols, fill::randu );
(*this).operator=(tmp);
}
template<typename eT>
inline
void
SpSubview<eT>::randn()
{
arma_extra_debug_sigprint();
Mat<eT> tmp( (*this).n_rows, (*this).n_cols, fill::randn );
(*this).operator=(tmp);
}
template<typename eT>
arma_hot
inline
SpSubview_MapMat_val<eT>
SpSubview<eT>::operator[](const uword i)
{
const uword lrow = i % n_rows;
const uword lcol = i / n_rows;
return (*this).at(lrow, lcol);
}
template<typename eT>
arma_hot
inline
eT
SpSubview<eT>::operator[](const uword i) const
{
const uword lrow = i % n_rows;
const uword lcol = i / n_rows;
return (*this).at(lrow, lcol);
}
template<typename eT>
arma_hot
inline
SpSubview_MapMat_val<eT>
SpSubview<eT>::operator()(const uword i)
{
arma_debug_check_bounds( (i >= n_elem), "SpSubview::operator(): index out of bounds" );
const uword lrow = i % n_rows;
const uword lcol = i / n_rows;
return (*this).at(lrow, lcol);
}
template<typename eT>
arma_hot
inline
eT
SpSubview<eT>::operator()(const uword i) const
{
arma_debug_check_bounds( (i >= n_elem), "SpSubview::operator(): index out of bounds" );
const uword lrow = i % n_rows;
const uword lcol = i / n_rows;
return (*this).at(lrow, lcol);
}
template<typename eT>
arma_hot
inline
SpSubview_MapMat_val<eT>
SpSubview<eT>::operator()(const uword in_row, const uword in_col)
{
arma_debug_check_bounds( (in_row >= n_rows) || (in_col >= n_cols), "SpSubview::operator(): index out of bounds" );
return (*this).at(in_row, in_col);
}
template<typename eT>
arma_hot
inline
eT
SpSubview<eT>::operator()(const uword in_row, const uword in_col) const
{
arma_debug_check_bounds( (in_row >= n_rows) || (in_col >= n_cols), "SpSubview::operator(): index out of bounds" );
return (*this).at(in_row, in_col);
}
template<typename eT>
arma_hot
inline
SpSubview_MapMat_val<eT>
SpSubview<eT>::at(const uword i)
{
const uword lrow = i % n_rows;
const uword lcol = i / n_cols;
return (*this).at(lrow, lcol);
}
template<typename eT>
arma_hot
inline
eT
SpSubview<eT>::at(const uword i) const
{
const uword lrow = i % n_rows;
const uword lcol = i / n_cols;
return (*this).at(lrow, lcol);
}
template<typename eT>
arma_hot
inline
SpSubview_MapMat_val<eT>
SpSubview<eT>::at(const uword in_row, const uword in_col)
{
return SpSubview_MapMat_val<eT>((*this), m.cache, aux_row1 + in_row, aux_col1 + in_col);
}
template<typename eT>
arma_hot
inline
eT
SpSubview<eT>::at(const uword in_row, const uword in_col) const
{
return m.at(aux_row1 + in_row, aux_col1 + in_col);
}
template<typename eT>
inline
bool
SpSubview<eT>::check_overlap(const SpSubview<eT>& x) const
{
const SpSubview<eT>& t = *this;
if(&t.m != &x.m)
{
return false;
}
else
{
if( (t.n_elem == 0) || (x.n_elem == 0) )
{
return false;
}
else
{
const uword t_row_start = t.aux_row1;
const uword t_row_end_p1 = t_row_start + t.n_rows;
const uword t_col_start = t.aux_col1;
const uword t_col_end_p1 = t_col_start + t.n_cols;
const uword x_row_start = x.aux_row1;
const uword x_row_end_p1 = x_row_start + x.n_rows;
const uword x_col_start = x.aux_col1;
const uword x_col_end_p1 = x_col_start + x.n_cols;
const bool outside_rows = ( (x_row_start >= t_row_end_p1) || (t_row_start >= x_row_end_p1) );
const bool outside_cols = ( (x_col_start >= t_col_end_p1) || (t_col_start >= x_col_end_p1) );
return ( (outside_rows == false) && (outside_cols == false) );
}
}
}
template<typename eT>
inline
bool
SpSubview<eT>::is_vec() const
{
return ( (n_rows == 1) || (n_cols == 1) );
}
template<typename eT>
inline
SpSubview_row<eT>
SpSubview<eT>::row(const uword row_num)
{
arma_extra_debug_sigprint();
arma_debug_check_bounds(row_num >= n_rows, "SpSubview::row(): out of bounds");
return SpSubview_row<eT>(const_cast< SpMat<eT>& >(m), row_num + aux_row1, aux_col1, n_cols);
}
template<typename eT>
inline
const SpSubview_row<eT>
SpSubview<eT>::row(const uword row_num) const
{
arma_extra_debug_sigprint();
arma_debug_check_bounds(row_num >= n_rows, "SpSubview::row(): out of bounds");
return SpSubview_row<eT>(m, row_num + aux_row1, aux_col1, n_cols);
}
template<typename eT>
inline
SpSubview_col<eT>
SpSubview<eT>::col(const uword col_num)
{
arma_extra_debug_sigprint();
arma_debug_check_bounds(col_num >= n_cols, "SpSubview::col(): out of bounds");
return SpSubview_col<eT>(const_cast< SpMat<eT>& >(m), col_num + aux_col1, aux_row1, n_rows);
}
template<typename eT>
inline
const SpSubview_col<eT>
SpSubview<eT>::col(const uword col_num) const
{
arma_extra_debug_sigprint();
arma_debug_check_bounds(col_num >= n_cols, "SpSubview::col(): out of bounds");
return SpSubview_col<eT>(m, col_num + aux_col1, aux_row1, n_rows);
}
template<typename eT>
inline
SpSubview<eT>
SpSubview<eT>::rows(const uword in_row1, const uword in_row2)
{
arma_extra_debug_sigprint();
arma_debug_check_bounds
(
(in_row1 > in_row2) || (in_row2 >= n_rows),
"SpSubview::rows(): indices out of bounds or incorrectly used"
);
return submat(in_row1, 0, in_row2, n_cols - 1);
}
template<typename eT>
inline
const SpSubview<eT>
SpSubview<eT>::rows(const uword in_row1, const uword in_row2) const
{
arma_extra_debug_sigprint();
arma_debug_check_bounds
(
(in_row1 > in_row2) || (in_row2 >= n_rows),
"SpSubview::rows(): indices out of bounds or incorrectly used"
);
return submat(in_row1, 0, in_row2, n_cols - 1);
}
template<typename eT>
inline
SpSubview<eT>
SpSubview<eT>::cols(const uword in_col1, const uword in_col2)
{
arma_extra_debug_sigprint();
arma_debug_check_bounds
(
(in_col1 > in_col2) || (in_col2 >= n_cols),
"SpSubview::cols(): indices out of bounds or incorrectly used"
);
return submat(0, in_col1, n_rows - 1, in_col2);
}
template<typename eT>
inline
const SpSubview<eT>
SpSubview<eT>::cols(const uword in_col1, const uword in_col2) const
{
arma_extra_debug_sigprint();
arma_debug_check_bounds
(
(in_col1 > in_col2) || (in_col2 >= n_cols),
"SpSubview::cols(): indices out of bounds or incorrectly used"
);
return submat(0, in_col1, n_rows - 1, in_col2);
}
template<typename eT>
inline
SpSubview<eT>
SpSubview<eT>::submat(const uword in_row1, const uword in_col1, const uword in_row2, const uword in_col2)
{
arma_extra_debug_sigprint();
arma_debug_check_bounds
(
(in_row1 > in_row2) || (in_col1 > in_col2) || (in_row2 >= n_rows) || (in_col2 >= n_cols),
"SpSubview::submat(): indices out of bounds or incorrectly used"
);
return access::rw(m).submat(in_row1 + aux_row1, in_col1 + aux_col1, in_row2 + aux_row1, in_col2 + aux_col1);
}
template<typename eT>
inline
const SpSubview<eT>
SpSubview<eT>::submat(const uword in_row1, const uword in_col1, const uword in_row2, const uword in_col2) const
{
arma_extra_debug_sigprint();
arma_debug_check_bounds
(
(in_row1 > in_row2) || (in_col1 > in_col2) || (in_row2 >= n_rows) || (in_col2 >= n_cols),
"SpSubview::submat(): indices out of bounds or incorrectly used"
);
return m.submat(in_row1 + aux_row1, in_col1 + aux_col1, in_row2 + aux_row1, in_col2 + aux_col1);
}
template<typename eT>
inline
SpSubview<eT>
SpSubview<eT>::submat(const span& row_span, const span& col_span)
{
arma_extra_debug_sigprint();
const bool row_all = row_span.whole;
const bool col_all = row_span.whole;
const uword in_row1 = row_all ? 0 : row_span.a;
const uword in_row2 = row_all ? n_rows : row_span.b;
const uword in_col1 = col_all ? 0 : col_span.a;
const uword in_col2 = col_all ? n_cols : col_span.b;
arma_debug_check_bounds
(
( row_all ? false : ((in_row1 > in_row2) || (in_row2 >= n_rows)))
||
( col_all ? false : ((in_col1 > in_col2) || (in_col2 >= n_cols))),
"SpSubview::submat(): indices out of bounds or incorrectly used"
);
return submat(in_row1, in_col1, in_row2, in_col2);
}
template<typename eT>
inline
const SpSubview<eT>
SpSubview<eT>::submat(const span& row_span, const span& col_span) const
{
arma_extra_debug_sigprint();
const bool row_all = row_span.whole;
const bool col_all = row_span.whole;
const uword in_row1 = row_all ? 0 : row_span.a;
const uword in_row2 = row_all ? n_rows - 1 : row_span.b;
const uword in_col1 = col_all ? 0 : col_span.a;
const uword in_col2 = col_all ? n_cols - 1 : col_span.b;
arma_debug_check_bounds
(
( row_all ? false : ((in_row1 > in_row2) || (in_row2 >= n_rows)))
||
( col_all ? false : ((in_col1 > in_col2) || (in_col2 >= n_cols))),
"SpSubview::submat(): indices out of bounds or incorrectly used"
);
return submat(in_row1, in_col1, in_row2, in_col2);
}
template<typename eT>
inline
SpSubview<eT>
SpSubview<eT>::operator()(const uword row_num, const span& col_span)
{
arma_extra_debug_sigprint();
return submat(span(row_num, row_num), col_span);
}
template<typename eT>
inline
const SpSubview<eT>
SpSubview<eT>::operator()(const uword row_num, const span& col_span) const
{
arma_extra_debug_sigprint();
return submat(span(row_num, row_num), col_span);
}
template<typename eT>
inline
SpSubview<eT>
SpSubview<eT>::operator()(const span& row_span, const uword col_num)
{
arma_extra_debug_sigprint();
return submat(row_span, span(col_num, col_num));
}
template<typename eT>
inline
const SpSubview<eT>
SpSubview<eT>::operator()(const span& row_span, const uword col_num) const
{
arma_extra_debug_sigprint();
return submat(row_span, span(col_num, col_num));
}
template<typename eT>
inline
SpSubview<eT>
SpSubview<eT>::operator()(const span& row_span, const span& col_span)
{
arma_extra_debug_sigprint();
return submat(row_span, col_span);
}
template<typename eT>
inline
const SpSubview<eT>
SpSubview<eT>::operator()(const span& row_span, const span& col_span) const
{
arma_extra_debug_sigprint();
return submat(row_span, col_span);
}
template<typename eT>
inline
void
SpSubview<eT>::swap_rows(const uword in_row1, const uword in_row2)
{
arma_extra_debug_sigprint();
arma_debug_check((in_row1 >= n_rows) || (in_row2 >= n_rows), "SpSubview::swap_rows(): invalid row index");
const uword lstart_col = aux_col1;
const uword lend_col = aux_col1 + n_cols;
for(uword c = lstart_col; c < lend_col; ++c)
{
const eT val = access::rw(m).at(in_row1 + aux_row1, c);
access::rw(m).at(in_row2 + aux_row1, c) = eT( access::rw(m).at(in_row1 + aux_row1, c) );
access::rw(m).at(in_row1 + aux_row1, c) = val;
}
}
template<typename eT>
inline
void
SpSubview<eT>::swap_cols(const uword in_col1, const uword in_col2)
{
arma_extra_debug_sigprint();
arma_debug_check((in_col1 >= n_cols) || (in_col2 >= n_cols), "SpSubview::swap_cols(): invalid column index");
const uword lstart_row = aux_row1;
const uword lend_row = aux_row1 + n_rows;
for(uword r = lstart_row; r < lend_row; ++r)
{
const eT val = access::rw(m).at(r, in_col1 + aux_col1);
access::rw(m).at(r, in_col1 + aux_col1) = eT( access::rw(m).at(r, in_col2 + aux_col1) );
access::rw(m).at(r, in_col2 + aux_col1) = val;
}
}
template<typename eT>
inline
typename SpSubview<eT>::iterator
SpSubview<eT>::begin()
{
return iterator(*this);
}
template<typename eT>
inline
typename SpSubview<eT>::const_iterator
SpSubview<eT>::begin() const
{
m.sync_csc();
return const_iterator(*this);
}
template<typename eT>
inline
typename SpSubview<eT>::const_iterator
SpSubview<eT>::cbegin() const
{
m.sync_csc();
return const_iterator(*this);
}
template<typename eT>
inline
typename SpSubview<eT>::iterator
SpSubview<eT>::begin_col(const uword col_num)
{
m.sync_csc();
return iterator(*this, 0, col_num);
}
template<typename eT>
inline
typename SpSubview<eT>::const_iterator
SpSubview<eT>::begin_col(const uword col_num) const
{
m.sync_csc();
return const_iterator(*this, 0, col_num);
}
template<typename eT>
inline
typename SpSubview<eT>::row_iterator
SpSubview<eT>::begin_row(const uword row_num)
{
m.sync_csc();
return row_iterator(*this, row_num, 0);
}
template<typename eT>
inline
typename SpSubview<eT>::const_row_iterator
SpSubview<eT>::begin_row(const uword row_num) const
{
m.sync_csc();
return const_row_iterator(*this, row_num, 0);
}
template<typename eT>
inline
typename SpSubview<eT>::iterator
SpSubview<eT>::end()
{
m.sync_csc();
return iterator(*this, 0, n_cols, n_nonzero, m.n_nonzero - n_nonzero);
}
template<typename eT>
inline
typename SpSubview<eT>::const_iterator
SpSubview<eT>::end() const
{
m.sync_csc();
return const_iterator(*this, 0, n_cols, n_nonzero, m.n_nonzero - n_nonzero);
}
template<typename eT>
inline
typename SpSubview<eT>::const_iterator
SpSubview<eT>::cend() const
{
m.sync_csc();
return const_iterator(*this, 0, n_cols, n_nonzero, m.n_nonzero - n_nonzero);
}
template<typename eT>
inline
typename SpSubview<eT>::row_iterator
SpSubview<eT>::end_row()
{
m.sync_csc();
return row_iterator(*this, n_nonzero);
}
template<typename eT>
inline
typename SpSubview<eT>::const_row_iterator
SpSubview<eT>::end_row() const
{
m.sync_csc();
return const_row_iterator(*this, n_nonzero);
}
template<typename eT>
inline
typename SpSubview<eT>::row_iterator
SpSubview<eT>::end_row(const uword row_num)
{
m.sync_csc();
return row_iterator(*this, row_num + 1, 0);
}
template<typename eT>
inline
typename SpSubview<eT>::const_row_iterator
SpSubview<eT>::end_row(const uword row_num) const
{
m.sync_csc();
return const_row_iterator(*this, row_num + 1, 0);
}
template<typename eT>
arma_inline
bool
SpSubview<eT>::is_alias(const SpMat<eT>& X) const
{
return m.is_alias(X);
}
template<typename eT>
inline
arma_warn_unused
eT&
SpSubview<eT>::insert_element(const uword in_row, const uword in_col, const eT in_val)
{
arma_extra_debug_sigprint();
// This may not actually insert an element.
const uword old_n_nonzero = m.n_nonzero;
eT& retval = access::rw(m).insert_element(in_row + aux_row1, in_col + aux_col1, in_val);
// Update n_nonzero (if necessary).
access::rw(n_nonzero) += (m.n_nonzero - old_n_nonzero);
return retval;
}
template<typename eT>
inline
void
SpSubview<eT>::delete_element(const uword in_row, const uword in_col)
{
arma_extra_debug_sigprint();
// This may not actually delete an element.
const uword old_n_nonzero = m.n_nonzero;
access::rw(m).delete_element(in_row + aux_row1, in_col + aux_col1);
access::rw(n_nonzero) -= (old_n_nonzero - m.n_nonzero);
}
template<typename eT>
inline
void
SpSubview<eT>::invalidate_cache() const
{
arma_extra_debug_sigprint();
m.invalidate_cache();
}
//
//
//
template<typename eT>
inline
SpSubview_col<eT>::SpSubview_col(const SpMat<eT>& in_m, const uword in_col)
: SpSubview<eT>(in_m, 0, in_col, in_m.n_rows, 1)
{
arma_extra_debug_sigprint();
}
template<typename eT>
inline
SpSubview_col<eT>::SpSubview_col(const SpMat<eT>& in_m, const uword in_col, const uword in_row1, const uword in_n_rows)
: SpSubview<eT>(in_m, in_row1, in_col, in_n_rows, 1)
{
arma_extra_debug_sigprint();
}
template<typename eT>
inline
void
SpSubview_col<eT>::operator=(const SpSubview<eT>& x)
{
arma_extra_debug_sigprint();
SpSubview<eT>::operator=(x);
}
template<typename eT>
inline
void
SpSubview_col<eT>::operator=(const SpSubview_col<eT>& x)
{
arma_extra_debug_sigprint();
SpSubview<eT>::operator=(x); // interprets 'SpSubview_col' as 'SpSubview'
}
template<typename eT>
template<typename T1>
inline
void
SpSubview_col<eT>::operator=(const SpBase<eT,T1>& x)
{
arma_extra_debug_sigprint();
SpSubview<eT>::operator=(x);
}
template<typename eT>
template<typename T1>
inline
void
SpSubview_col<eT>::operator=(const Base<eT,T1>& x)
{
arma_extra_debug_sigprint();
SpSubview<eT>::operator=(x);
}
template<typename eT>
inline
arma_warn_unused
const SpOp<SpSubview_col<eT>,spop_htrans>
SpSubview_col<eT>::t() const
{
return SpOp<SpSubview_col<eT>,spop_htrans>(*this);
}
template<typename eT>
inline
arma_warn_unused
const SpOp<SpSubview_col<eT>,spop_htrans>
SpSubview_col<eT>::ht() const
{
return SpOp<SpSubview_col<eT>,spop_htrans>(*this);
}
template<typename eT>
inline
arma_warn_unused
const SpOp<SpSubview_col<eT>,spop_strans>
SpSubview_col<eT>::st() const
{
return SpOp<SpSubview_col<eT>,spop_strans>(*this);
}
//
//
//
template<typename eT>
inline
SpSubview_row<eT>::SpSubview_row(const SpMat<eT>& in_m, const uword in_row)
: SpSubview<eT>(in_m, in_row, 0, 1, in_m.n_cols)
{
arma_extra_debug_sigprint();
}
template<typename eT>
inline
SpSubview_row<eT>::SpSubview_row(const SpMat<eT>& in_m, const uword in_row, const uword in_col1, const uword in_n_cols)
: SpSubview<eT>(in_m, in_row, in_col1, 1, in_n_cols)
{
arma_extra_debug_sigprint();
}
template<typename eT>
inline
void
SpSubview_row<eT>::operator=(const SpSubview<eT>& x)
{
arma_extra_debug_sigprint();
SpSubview<eT>::operator=(x);
}
template<typename eT>
inline
void
SpSubview_row<eT>::operator=(const SpSubview_row<eT>& x)
{
arma_extra_debug_sigprint();
SpSubview<eT>::operator=(x); // interprets 'SpSubview_row' as 'SpSubview'
}
template<typename eT>
template<typename T1>
inline
void
SpSubview_row<eT>::operator=(const SpBase<eT,T1>& x)
{
arma_extra_debug_sigprint();
SpSubview<eT>::operator=(x);
}
template<typename eT>
template<typename T1>
inline
void
SpSubview_row<eT>::operator=(const Base<eT,T1>& x)
{
arma_extra_debug_sigprint();
SpSubview<eT>::operator=(x);
}
template<typename eT>
inline
arma_warn_unused
const SpOp<SpSubview_row<eT>,spop_htrans>
SpSubview_row<eT>::t() const
{
return SpOp<SpSubview_row<eT>,spop_htrans>(*this);
}
template<typename eT>
inline
arma_warn_unused
const SpOp<SpSubview_row<eT>,spop_htrans>
SpSubview_row<eT>::ht() const
{
return SpOp<SpSubview_row<eT>,spop_htrans>(*this);
}
template<typename eT>
inline
arma_warn_unused
const SpOp<SpSubview_row<eT>,spop_strans>
SpSubview_row<eT>::st() const
{
return SpOp<SpSubview_row<eT>,spop_strans>(*this);
}
//! @}