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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 unwrap_cube
//! @{
template<typename T1>
struct unwrap_cube
{
typedef typename T1::elem_type eT;
inline
unwrap_cube(const T1& A)
: M(A)
{
arma_extra_debug_sigprint();
}
const Cube<eT> M;
template<typename eT2>
constexpr bool is_alias(const Cube<eT2>&) const { return false; }
};
template<typename eT>
struct unwrap_cube< Cube<eT> >
{
inline
unwrap_cube(const Cube<eT>& A)
: M(A)
{
arma_extra_debug_sigprint();
}
const Cube<eT>& M;
template<typename eT2>
arma_inline bool is_alias(const Cube<eT2>& X) const { return (void_ptr(&M) == void_ptr(&X)); }
};
//
//
//
template<typename T1>
struct unwrap_cube_check
{
typedef typename T1::elem_type eT;
inline
unwrap_cube_check(const T1& A, const Cube<eT>&)
: M(A)
{
arma_extra_debug_sigprint();
arma_type_check(( is_arma_cube_type<T1>::value == false ));
}
inline
unwrap_cube_check(const T1& A, const bool)
: M(A)
{
arma_extra_debug_sigprint();
arma_type_check(( is_arma_cube_type<T1>::value == false ));
}
const Cube<eT> M;
};
template<typename eT>
struct unwrap_cube_check< Cube<eT> >
{
inline
unwrap_cube_check(const Cube<eT>& A, const Cube<eT>& B)
: M_local( (&A == &B) ? new Cube<eT>(A) : nullptr )
, M ( (&A == &B) ? (*M_local) : A )
{
arma_extra_debug_sigprint();
}
inline
unwrap_cube_check(const Cube<eT>& A, const bool is_alias)
: M_local( is_alias ? new Cube<eT>(A) : nullptr )
, M ( is_alias ? (*M_local) : A )
{
arma_extra_debug_sigprint();
}
inline
~unwrap_cube_check()
{
arma_extra_debug_sigprint();
if(M_local) { delete M_local; }
}
// the order below is important
const Cube<eT>* M_local;
const Cube<eT>& M;
};
//! @}
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