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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 glue_min
//! @{
template<typename T1, typename T2>
inline
void
glue_min::apply(Mat<typename T1::elem_type>& out, const Glue<T1, T2, glue_min>& X)
{
arma_extra_debug_sigprint();
typedef typename T1::elem_type eT;
const Proxy<T1> PA(X.A);
const Proxy<T2> PB(X.B);
if( (PA.is_alias(out) && PA.has_subview) || (PB.is_alias(out) && PB.has_subview) )
{
Mat<eT> tmp;
glue_min::apply(tmp, PA, PB);
out.steal_mem(tmp);
}
else
{
glue_min::apply(out, PA, PB);
}
}
template<typename eT, typename T1, typename T2>
inline
void
glue_min::apply(Mat<eT>& out, const Proxy<T1>& PA, const Proxy<T2>& PB)
{
arma_extra_debug_sigprint();
const uword n_rows = PA.get_n_rows();
const uword n_cols = PA.get_n_cols();
arma_debug_assert_same_size(n_rows, n_cols, PB.get_n_rows(), PB.get_n_cols(), "element-wise min()");
const arma_lt_comparator<eT> comparator;
out.set_size(n_rows, n_cols);
eT* out_mem = out.memptr();
if( (Proxy<T1>::use_at == false) && (Proxy<T2>::use_at == false) )
{
typename Proxy<T1>::ea_type A = PA.get_ea();
typename Proxy<T2>::ea_type B = PB.get_ea();
const uword N = PA.get_n_elem();
for(uword i=0; i<N; ++i)
{
const eT Ai = A[i];
const eT Bi = B[i];
out_mem[i] = comparator(Ai,Bi) ? Ai : Bi;
}
}
else
{
for(uword col=0; col < n_cols; ++col)
for(uword row=0; row < n_rows; ++row)
{
const eT Ai = PA.at(row,col);
const eT Bi = PB.at(row,col);
*out_mem = comparator(Ai,Bi) ? Ai : Bi;
++out_mem;
}
}
}
template<typename T1, typename T2>
inline
void
glue_min::apply(Cube<typename T1::elem_type>& out, const GlueCube<T1, T2, glue_min>& X)
{
arma_extra_debug_sigprint();
typedef typename T1::elem_type eT;
const ProxyCube<T1> PA(X.A);
const ProxyCube<T2> PB(X.B);
if( (PA.is_alias(out) && PA.has_subview) || (PB.is_alias(out) && PB.has_subview) )
{
Cube<eT> tmp;
glue_min::apply(tmp, PA, PB);
out.steal_mem(tmp);
}
else
{
glue_min::apply(out, PA, PB);
}
}
template<typename eT, typename T1, typename T2>
inline
void
glue_min::apply(Cube<eT>& out, const ProxyCube<T1>& PA, const ProxyCube<T2>& PB)
{
arma_extra_debug_sigprint();
const uword n_rows = PA.get_n_rows();
const uword n_cols = PA.get_n_cols();
const uword n_slices = PA.get_n_slices();
arma_debug_assert_same_size(n_rows, n_cols, n_slices, PB.get_n_rows(), PB.get_n_cols(), PB.get_n_slices(), "element-wise min()");
const arma_lt_comparator<eT> comparator;
out.set_size(n_rows, n_cols, n_slices);
eT* out_mem = out.memptr();
if( (ProxyCube<T1>::use_at == false) && (ProxyCube<T2>::use_at == false) )
{
typename ProxyCube<T1>::ea_type A = PA.get_ea();
typename ProxyCube<T2>::ea_type B = PB.get_ea();
const uword N = PA.get_n_elem();
for(uword i=0; i<N; ++i)
{
const eT Ai = A[i];
const eT Bi = B[i];
out_mem[i] = comparator(Ai,Bi) ? Ai : Bi;
}
}
else
{
for(uword slice=0; slice < n_slices; ++slice)
for(uword col=0; col < n_cols; ++col )
for(uword row=0; row < n_rows; ++row )
{
const eT Ai = PA.at(row,col,slice);
const eT Bi = PB.at(row,col,slice);
*out_mem = comparator(Ai,Bi) ? Ai : Bi;
++out_mem;
}
}
}
//! @}
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