Files
armadillo-code/include/armadillo_bits/subview_cube_each_meat.hpp
T

1033 lines
22 KiB
C++

// 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 subview_cube_each
//! @{
//
//
// subview_cube_each_common
template<typename eT>
inline
subview_cube_each_common<eT>::subview_cube_each_common(const Cube<eT>& in_p)
: P(in_p)
{
arma_extra_debug_sigprint();
}
template<typename eT>
inline
void
subview_cube_each_common<eT>::check_size(const Mat<eT>& A) const
{
if(arma_config::debug)
{
if( (A.n_rows != P.n_rows) || (A.n_cols != P.n_cols) )
{
arma_stop_logic_error( incompat_size_string(A) );
}
}
}
template<typename eT>
arma_cold
inline
const std::string
subview_cube_each_common<eT>::incompat_size_string(const Mat<eT>& A) const
{
std::ostringstream tmp;
tmp << "each_slice(): incompatible size; expected " << P.n_rows << 'x' << P.n_cols << ", got " << A.n_rows << 'x' << A.n_cols;
return tmp.str();
}
//
//
// subview_cube_each1
template<typename eT>
inline
subview_cube_each1<eT>::~subview_cube_each1()
{
arma_extra_debug_sigprint();
}
template<typename eT>
inline
subview_cube_each1<eT>::subview_cube_each1(const Cube<eT>& in_p)
: subview_cube_each_common<eT>::subview_cube_each_common(in_p)
{
arma_extra_debug_sigprint();
}
template<typename eT>
template<typename T1>
inline
void
subview_cube_each1<eT>::operator= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& p = access::rw(subview_cube_each_common<eT>::P);
const unwrap<T1> tmp( in.get_ref() );
const Mat<eT>& A = tmp.M;
subview_cube_each_common<eT>::check_size(A);
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
const eT* A_mem = A.memptr();
for(uword i=0; i < p_n_slices; ++i) { arrayops::copy( p.slice_memptr(i), A_mem, p_n_elem_slice ); }
}
template<typename eT>
template<typename T1>
inline
void
subview_cube_each1<eT>::operator+= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& p = access::rw(subview_cube_each_common<eT>::P);
const unwrap<T1> tmp( in.get_ref() );
const Mat<eT>& A = tmp.M;
subview_cube_each_common<eT>::check_size(A);
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
const eT* A_mem = A.memptr();
for(uword i=0; i < p_n_slices; ++i) { arrayops::inplace_plus( p.slice_memptr(i), A_mem, p_n_elem_slice ); }
}
template<typename eT>
template<typename T1>
inline
void
subview_cube_each1<eT>::operator-= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& p = access::rw(subview_cube_each_common<eT>::P);
const unwrap<T1> tmp( in.get_ref() );
const Mat<eT>& A = tmp.M;
subview_cube_each_common<eT>::check_size(A);
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
const eT* A_mem = A.memptr();
for(uword i=0; i < p_n_slices; ++i) { arrayops::inplace_minus( p.slice_memptr(i), A_mem, p_n_elem_slice ); }
}
template<typename eT>
template<typename T1>
inline
void
subview_cube_each1<eT>::operator%= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& p = access::rw(subview_cube_each_common<eT>::P);
const unwrap<T1> tmp( in.get_ref() );
const Mat<eT>& A = tmp.M;
subview_cube_each_common<eT>::check_size(A);
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
const eT* A_mem = A.memptr();
for(uword i=0; i < p_n_slices; ++i) { arrayops::inplace_mul( p.slice_memptr(i), A_mem, p_n_elem_slice ); }
}
template<typename eT>
template<typename T1>
inline
void
subview_cube_each1<eT>::operator/= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& p = access::rw(subview_cube_each_common<eT>::P);
const unwrap<T1> tmp( in.get_ref() );
const Mat<eT>& A = tmp.M;
subview_cube_each_common<eT>::check_size(A);
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
const eT* A_mem = A.memptr();
for(uword i=0; i < p_n_slices; ++i) { arrayops::inplace_div( p.slice_memptr(i), A_mem, p_n_elem_slice ); }
}
template<typename eT>
template<typename T1>
inline
void
subview_cube_each1<eT>::operator*= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& C = access::rw(subview_cube_each_common<eT>::P);
C = C.each_slice() * in.get_ref();
}
//
//
// subview_cube_each2
template<typename eT, typename TB>
inline
subview_cube_each2<eT,TB>::~subview_cube_each2()
{
arma_extra_debug_sigprint();
}
template<typename eT, typename TB>
inline
subview_cube_each2<eT,TB>::subview_cube_each2(const Cube<eT>& in_p, const Base<uword, TB>& in_indices)
: subview_cube_each_common<eT>::subview_cube_each_common(in_p)
, base_indices(in_indices)
{
arma_extra_debug_sigprint();
}
template<typename eT, typename TB>
inline
void
subview_cube_each2<eT,TB>::check_indices(const Mat<uword>& indices) const
{
arma_debug_check( ((indices.is_vec() == false) && (indices.is_empty() == false)), "each_slice(): list of indices must be a vector" );
}
template<typename eT, typename TB>
template<typename T1>
inline
void
subview_cube_each2<eT,TB>::operator= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& p = access::rw(subview_cube_each_common<eT>::P);
const unwrap<T1> tmp( in.get_ref() );
const Mat<eT>& A = tmp.M;
subview_cube_each_common<eT>::check_size(A);
const unwrap<TB> U( base_indices.get_ref() );
check_indices(U.M);
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
const eT* A_mem = A.memptr();
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
arrayops::copy(p.slice_memptr(slice), A_mem, p_n_elem_slice);
}
}
template<typename eT, typename TB>
template<typename T1>
inline
void
subview_cube_each2<eT,TB>::operator+= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& p = access::rw(subview_cube_each_common<eT>::P);
const unwrap<T1> tmp( in.get_ref() );
const Mat<eT>& A = tmp.M;
subview_cube_each_common<eT>::check_size(A);
const unwrap<TB> U( base_indices.get_ref() );
check_indices(U.M);
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
const eT* A_mem = A.memptr();
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
arrayops::inplace_plus(p.slice_memptr(slice), A_mem, p_n_elem_slice);
}
}
template<typename eT, typename TB>
template<typename T1>
inline
void
subview_cube_each2<eT,TB>::operator-= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& p = access::rw(subview_cube_each_common<eT>::P);
const unwrap<T1> tmp( in.get_ref() );
const Mat<eT>& A = tmp.M;
subview_cube_each_common<eT>::check_size(A);
const unwrap<TB> U( base_indices.get_ref() );
check_indices(U.M);
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
const eT* A_mem = A.memptr();
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
arrayops::inplace_minus(p.slice_memptr(slice), A_mem, p_n_elem_slice);
}
}
template<typename eT, typename TB>
template<typename T1>
inline
void
subview_cube_each2<eT,TB>::operator%= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& p = access::rw(subview_cube_each_common<eT>::P);
const unwrap<T1> tmp( in.get_ref() );
const Mat<eT>& A = tmp.M;
subview_cube_each_common<eT>::check_size(A);
const unwrap<TB> U( base_indices.get_ref() );
check_indices(U.M);
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
const eT* A_mem = A.memptr();
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
arrayops::inplace_mul(p.slice_memptr(slice), A_mem, p_n_elem_slice);
}
}
template<typename eT, typename TB>
template<typename T1>
inline
void
subview_cube_each2<eT,TB>::operator/= (const Base<eT,T1>& in)
{
arma_extra_debug_sigprint();
Cube<eT>& p = access::rw(subview_cube_each_common<eT>::P);
const unwrap<T1> tmp( in.get_ref() );
const Mat<eT>& A = tmp.M;
subview_cube_each_common<eT>::check_size(A);
const unwrap<TB> U( base_indices.get_ref() );
check_indices(U.M);
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
const eT* A_mem = A.memptr();
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
arrayops::inplace_div(p.slice_memptr(slice), A_mem, p_n_elem_slice);
}
}
//
//
// subview_cube_each1_aux
template<typename eT, typename T2>
inline
Cube<eT>
subview_cube_each1_aux::operator_plus
(
const subview_cube_each1<eT>& X,
const Base<eT,T2>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = X.P;
const uword p_n_rows = p.n_rows;
const uword p_n_cols = p.n_cols;
const uword p_n_slices = p.n_slices;
Cube<eT> out(p_n_rows, p_n_cols, p_n_slices, arma_nozeros_indicator());
const unwrap<T2> tmp(Y.get_ref());
const Mat<eT>& A = tmp.M;
X.check_size(A);
for(uword i=0; i < p_n_slices; ++i)
{
Mat<eT> out_slice( out.slice_memptr(i), p_n_rows, p_n_cols, false, true);
const Mat<eT> p_slice(const_cast<eT*>(p.slice_memptr(i)), p_n_rows, p_n_cols, false, true);
out_slice = p_slice + A;
}
return out;
}
template<typename eT, typename T2>
inline
Cube<eT>
subview_cube_each1_aux::operator_minus
(
const subview_cube_each1<eT>& X,
const Base<eT,T2>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = X.P;
const uword p_n_rows = p.n_rows;
const uword p_n_cols = p.n_cols;
const uword p_n_slices = p.n_slices;
Cube<eT> out(p_n_rows, p_n_cols, p_n_slices, arma_nozeros_indicator());
const unwrap<T2> tmp(Y.get_ref());
const Mat<eT>& A = tmp.M;
X.check_size(A);
for(uword i=0; i < p_n_slices; ++i)
{
Mat<eT> out_slice( out.slice_memptr(i), p_n_rows, p_n_cols, false, true);
const Mat<eT> p_slice(const_cast<eT*>(p.slice_memptr(i)), p_n_rows, p_n_cols, false, true);
out_slice = p_slice - A;
}
return out;
}
template<typename T1, typename eT>
inline
Cube<eT>
subview_cube_each1_aux::operator_minus
(
const Base<eT,T1>& X,
const subview_cube_each1<eT>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = Y.P;
const uword p_n_rows = p.n_rows;
const uword p_n_cols = p.n_cols;
const uword p_n_slices = p.n_slices;
Cube<eT> out(p_n_rows, p_n_cols, p_n_slices, arma_nozeros_indicator());
const unwrap<T1> tmp(X.get_ref());
const Mat<eT>& A = tmp.M;
Y.check_size(A);
for(uword i=0; i < p_n_slices; ++i)
{
Mat<eT> out_slice( out.slice_memptr(i), p_n_rows, p_n_cols, false, true);
const Mat<eT> p_slice(const_cast<eT*>(p.slice_memptr(i)), p_n_rows, p_n_cols, false, true);
out_slice = A - p_slice;
}
return out;
}
template<typename eT, typename T2>
inline
Cube<eT>
subview_cube_each1_aux::operator_schur
(
const subview_cube_each1<eT>& X,
const Base<eT,T2>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = X.P;
const uword p_n_rows = p.n_rows;
const uword p_n_cols = p.n_cols;
const uword p_n_slices = p.n_slices;
Cube<eT> out(p_n_rows, p_n_cols, p_n_slices, arma_nozeros_indicator());
const unwrap<T2> tmp(Y.get_ref());
const Mat<eT>& A = tmp.M;
X.check_size(A);
for(uword i=0; i < p_n_slices; ++i)
{
Mat<eT> out_slice( out.slice_memptr(i), p_n_rows, p_n_cols, false, true);
const Mat<eT> p_slice(const_cast<eT*>(p.slice_memptr(i)), p_n_rows, p_n_cols, false, true);
out_slice = p_slice % A;
}
return out;
}
template<typename eT, typename T2>
inline
Cube<eT>
subview_cube_each1_aux::operator_div
(
const subview_cube_each1<eT>& X,
const Base<eT,T2>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = X.P;
const uword p_n_rows = p.n_rows;
const uword p_n_cols = p.n_cols;
const uword p_n_slices = p.n_slices;
Cube<eT> out(p_n_rows, p_n_cols, p_n_slices, arma_nozeros_indicator());
const unwrap<T2> tmp(Y.get_ref());
const Mat<eT>& A = tmp.M;
X.check_size(A);
for(uword i=0; i < p_n_slices; ++i)
{
Mat<eT> out_slice( out.slice_memptr(i), p_n_rows, p_n_cols, false, true);
const Mat<eT> p_slice(const_cast<eT*>(p.slice_memptr(i)), p_n_rows, p_n_cols, false, true);
out_slice = p_slice / A;
}
return out;
}
template<typename T1, typename eT>
inline
Cube<eT>
subview_cube_each1_aux::operator_div
(
const Base<eT,T1>& X,
const subview_cube_each1<eT>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = Y.P;
const uword p_n_rows = p.n_rows;
const uword p_n_cols = p.n_cols;
const uword p_n_slices = p.n_slices;
Cube<eT> out(p_n_rows, p_n_cols, p_n_slices, arma_nozeros_indicator());
const unwrap<T1> tmp(X.get_ref());
const Mat<eT>& A = tmp.M;
Y.check_size(A);
for(uword i=0; i < p_n_slices; ++i)
{
Mat<eT> out_slice( out.slice_memptr(i), p_n_rows, p_n_cols, false, true);
const Mat<eT> p_slice(const_cast<eT*>(p.slice_memptr(i)), p_n_rows, p_n_cols, false, true);
out_slice = A / p_slice;
}
return out;
}
template<typename eT, typename T2>
inline
Cube<eT>
subview_cube_each1_aux::operator_times
(
const subview_cube_each1<eT>& X,
const Base<eT,T2>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& C = X.P;
const unwrap<T2> tmp(Y.get_ref());
const Mat<eT>& M = tmp.M;
Cube<eT> out(C.n_rows, M.n_cols, C.n_slices, arma_nozeros_indicator());
for(uword i=0; i < C.n_slices; ++i)
{
Mat<eT> out_slice( out.slice_memptr(i), C.n_rows, M.n_cols, false, true);
const Mat<eT> C_slice(const_cast<eT*>(C.slice_memptr(i)), C.n_rows, C.n_cols, false, true);
out_slice = C_slice * M;
}
return out;
}
template<typename T1, typename eT>
inline
Cube<eT>
subview_cube_each1_aux::operator_times
(
const Base<eT,T1>& X,
const subview_cube_each1<eT>& Y
)
{
arma_extra_debug_sigprint();
const unwrap<T1> tmp(X.get_ref());
const Mat<eT>& M = tmp.M;
const Cube<eT>& C = Y.P;
Cube<eT> out(M.n_rows, C.n_cols, C.n_slices, arma_nozeros_indicator());
for(uword i=0; i < C.n_slices; ++i)
{
Mat<eT> out_slice( out.slice_memptr(i), M.n_rows, C.n_cols, false, true);
const Mat<eT> C_slice(const_cast<eT*>(C.slice_memptr(i)), C.n_rows, C.n_cols, false, true);
out_slice = M * C_slice;
}
return out;
}
//
//
// subview_cube_each2_aux
template<typename eT, typename TB, typename T2>
inline
Cube<eT>
subview_cube_each2_aux::operator_plus
(
const subview_cube_each2<eT,TB>& X,
const Base<eT,T2>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = X.P;
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
Cube<eT> out = p;
const unwrap<T2> tmp(Y.get_ref());
const Mat<eT>& A = tmp.M;
const unwrap<TB> U(X.base_indices.get_ref());
X.check_size(A);
X.check_indices(U.M);
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
const eT* A_mem = A.memptr();
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
arrayops::inplace_plus(out.slice_memptr(slice), A_mem, p_n_elem_slice);
}
return out;
}
template<typename eT, typename TB, typename T2>
inline
Cube<eT>
subview_cube_each2_aux::operator_minus
(
const subview_cube_each2<eT,TB>& X,
const Base<eT,T2>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = X.P;
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
Cube<eT> out = p;
const unwrap<T2> tmp(Y.get_ref());
const Mat<eT>& A = tmp.M;
const unwrap<TB> U(X.base_indices.get_ref());
X.check_size(A);
X.check_indices(U.M);
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
const eT* A_mem = A.memptr();
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
arrayops::inplace_minus(out.slice_memptr(slice), A_mem, p_n_elem_slice);
}
return out;
}
template<typename T1, typename eT, typename TB>
inline
Cube<eT>
subview_cube_each2_aux::operator_minus
(
const Base<eT,T1>& X,
const subview_cube_each2<eT,TB>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = Y.P;
const uword p_n_rows = p.n_rows;
const uword p_n_cols = p.n_cols;
const uword p_n_slices = p.n_slices;
Cube<eT> out = p;
const unwrap<T1> tmp(X.get_ref());
const Mat<eT>& A = tmp.M;
const unwrap<TB> U(Y.base_indices.get_ref());
Y.check_size(A);
Y.check_indices(U.M);
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
Mat<eT> out_slice( out.slice_memptr(slice), p_n_rows, p_n_cols, false, true);
const Mat<eT> p_slice(const_cast<eT*>(p.slice_memptr(slice)), p_n_rows, p_n_cols, false, true);
out_slice = A - p_slice;
}
return out;
}
template<typename eT, typename TB, typename T2>
inline
Cube<eT>
subview_cube_each2_aux::operator_schur
(
const subview_cube_each2<eT,TB>& X,
const Base<eT,T2>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = X.P;
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
Cube<eT> out = p;
const unwrap<T2> tmp(Y.get_ref());
const Mat<eT>& A = tmp.M;
const unwrap<TB> U(X.base_indices.get_ref());
X.check_size(A);
X.check_indices(U.M);
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
const eT* A_mem = A.memptr();
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
arrayops::inplace_mul(out.slice_memptr(slice), A_mem, p_n_elem_slice);
}
return out;
}
template<typename eT, typename TB, typename T2>
inline
Cube<eT>
subview_cube_each2_aux::operator_div
(
const subview_cube_each2<eT,TB>& X,
const Base<eT,T2>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = X.P;
const uword p_n_slices = p.n_slices;
const uword p_n_elem_slice = p.n_elem_slice;
Cube<eT> out = p;
const unwrap<T2> tmp(Y.get_ref());
const Mat<eT>& A = tmp.M;
const unwrap<TB> U(X.base_indices.get_ref());
X.check_size(A);
X.check_indices(U.M);
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
const eT* A_mem = A.memptr();
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
arrayops::inplace_div(out.slice_memptr(slice), A_mem, p_n_elem_slice);
}
return out;
}
template<typename T1, typename eT, typename TB>
inline
Cube<eT>
subview_cube_each2_aux::operator_div
(
const Base<eT,T1>& X,
const subview_cube_each2<eT,TB>& Y
)
{
arma_extra_debug_sigprint();
const Cube<eT>& p = Y.P;
const uword p_n_rows = p.n_rows;
const uword p_n_cols = p.n_cols;
const uword p_n_slices = p.n_slices;
Cube<eT> out = p;
const unwrap<T1> tmp(X.get_ref());
const Mat<eT>& A = tmp.M;
const unwrap<TB> U(Y.base_indices.get_ref());
Y.check_size(A);
Y.check_indices(U.M);
const uword* indices_mem = U.M.memptr();
const uword N = U.M.n_elem;
for(uword i=0; i < N; ++i)
{
const uword slice = indices_mem[i];
arma_debug_check_bounds( (slice >= p_n_slices), "each_slice(): index out of bounds" );
Mat<eT> out_slice( out.slice_memptr(slice), p_n_rows, p_n_cols, false, true);
const Mat<eT> p_slice(const_cast<eT*>(p.slice_memptr(slice)), p_n_rows, p_n_cols, false, true);
out_slice = A / p_slice;
}
return out;
}
//! @}