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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 spglue_relational
//! @{
template<typename T1, typename T2>
inline
void
spglue_rel_lt::apply(SpMat<uword>& out, const mtSpGlue<uword, T1, T2, spglue_rel_lt>& X)
{
arma_extra_debug_sigprint();
const SpProxy<T1> PA(X.A);
const SpProxy<T2> PB(X.B);
const bool is_alias = PA.is_alias(out) || PB.is_alias(out);
if(is_alias == false)
{
spglue_rel_lt::apply_noalias(out, PA, PB);
}
else
{
SpMat<uword> tmp;
spglue_rel_lt::apply_noalias(tmp, PA, PB);
out.steal_mem(tmp);
}
}
template<typename T1, typename T2>
inline
void
spglue_rel_lt::apply_noalias(SpMat<uword>& out, const SpProxy<T1>& PA, const SpProxy<T2>& PB)
{
arma_extra_debug_sigprint();
typedef typename T1::elem_type eT;
arma_debug_assert_same_size(PA.get_n_rows(), PA.get_n_cols(), PB.get_n_rows(), PB.get_n_cols(), "operator<");
const uword max_n_nonzero = PA.get_n_nonzero() + PB.get_n_nonzero();
// Resize memory to upper bound
out.reserve(PA.get_n_rows(), PA.get_n_cols(), max_n_nonzero);
// Now iterate across both matrices.
typename SpProxy<T1>::const_iterator_type x_it = PA.begin();
typename SpProxy<T1>::const_iterator_type x_end = PA.end();
typename SpProxy<T2>::const_iterator_type y_it = PB.begin();
typename SpProxy<T2>::const_iterator_type y_end = PB.end();
uword count = 0;
while( (x_it != x_end) || (y_it != y_end) )
{
uword out_val;
const uword x_it_col = x_it.col();
const uword x_it_row = x_it.row();
const uword y_it_col = y_it.col();
const uword y_it_row = y_it.row();
bool use_y_loc = false;
if(x_it == y_it)
{
out_val = ((*x_it) < (*y_it)) ? uword(1) : uword(0);
++x_it;
++y_it;
}
else
{
if((x_it_col < y_it_col) || ((x_it_col == y_it_col) && (x_it_row < y_it_row))) // if y is closer to the end
{
out_val = ((*x_it) < eT(0)) ? uword(1) : uword(0);
++x_it;
}
else
{
out_val = (eT(0) < (*y_it)) ? uword(1) : uword(0);
++y_it;
use_y_loc = true;
}
}
if(out_val != uword(0))
{
access::rw(out.values[count]) = out_val;
const uword out_row = (use_y_loc == false) ? x_it_row : y_it_row;
const uword out_col = (use_y_loc == false) ? x_it_col : y_it_col;
access::rw(out.row_indices[count]) = out_row;
access::rw(out.col_ptrs[out_col + 1])++;
++count;
}
arma_check( (count > max_n_nonzero), "internal error: spglue_rel_lt::apply_noalias(): count > max_n_nonzero" );
}
const uword out_n_cols = out.n_cols;
uword* col_ptrs = access::rwp(out.col_ptrs);
// Fix column pointers to be cumulative.
for(uword c = 1; c <= out_n_cols; ++c)
{
col_ptrs[c] += col_ptrs[c - 1];
}
if(count < max_n_nonzero)
{
if(count <= (max_n_nonzero/2))
{
out.mem_resize(count);
}
else
{
// quick resize without reallocating memory and copying data
access::rw( out.n_nonzero) = count;
access::rw( out.values[count]) = eT(0);
access::rw(out.row_indices[count]) = uword(0);
}
}
}
//
template<typename T1, typename T2>
inline
void
spglue_rel_gt::apply(SpMat<uword>& out, const mtSpGlue<uword, T1, T2, spglue_rel_gt>& X)
{
arma_extra_debug_sigprint();
const SpProxy<T1> PA(X.A);
const SpProxy<T2> PB(X.B);
const bool is_alias = PA.is_alias(out) || PB.is_alias(out);
if(is_alias == false)
{
spglue_rel_gt::apply_noalias(out, PA, PB);
}
else
{
SpMat<uword> tmp;
spglue_rel_gt::apply_noalias(tmp, PA, PB);
out.steal_mem(tmp);
}
}
template<typename T1, typename T2>
inline
void
spglue_rel_gt::apply_noalias(SpMat<uword>& out, const SpProxy<T1>& PA, const SpProxy<T2>& PB)
{
arma_extra_debug_sigprint();
typedef typename T1::elem_type eT;
arma_debug_assert_same_size(PA.get_n_rows(), PA.get_n_cols(), PB.get_n_rows(), PB.get_n_cols(), "operator>");
const uword max_n_nonzero = PA.get_n_nonzero() + PB.get_n_nonzero();
// Resize memory to upper bound
out.reserve(PA.get_n_rows(), PA.get_n_cols(), max_n_nonzero);
// Now iterate across both matrices.
typename SpProxy<T1>::const_iterator_type x_it = PA.begin();
typename SpProxy<T1>::const_iterator_type x_end = PA.end();
typename SpProxy<T2>::const_iterator_type y_it = PB.begin();
typename SpProxy<T2>::const_iterator_type y_end = PB.end();
uword count = 0;
while( (x_it != x_end) || (y_it != y_end) )
{
uword out_val;
const uword x_it_col = x_it.col();
const uword x_it_row = x_it.row();
const uword y_it_col = y_it.col();
const uword y_it_row = y_it.row();
bool use_y_loc = false;
if(x_it == y_it)
{
out_val = ((*x_it) > (*y_it)) ? uword(1) : uword(0);
++x_it;
++y_it;
}
else
{
if((x_it_col < y_it_col) || ((x_it_col == y_it_col) && (x_it_row < y_it_row))) // if y is closer to the end
{
out_val = ((*x_it) > eT(0)) ? uword(1) : uword(0);
++x_it;
}
else
{
out_val = (eT(0) > (*y_it)) ? uword(1) : uword(0);
++y_it;
use_y_loc = true;
}
}
if(out_val != uword(0))
{
access::rw(out.values[count]) = out_val;
const uword out_row = (use_y_loc == false) ? x_it_row : y_it_row;
const uword out_col = (use_y_loc == false) ? x_it_col : y_it_col;
access::rw(out.row_indices[count]) = out_row;
access::rw(out.col_ptrs[out_col + 1])++;
++count;
}
arma_check( (count > max_n_nonzero), "internal error: spglue_rel_gt::apply_noalias(): count > max_n_nonzero" );
}
const uword out_n_cols = out.n_cols;
uword* col_ptrs = access::rwp(out.col_ptrs);
// Fix column pointers to be cumulative.
for(uword c = 1; c <= out_n_cols; ++c)
{
col_ptrs[c] += col_ptrs[c - 1];
}
if(count < max_n_nonzero)
{
if(count <= (max_n_nonzero/2))
{
out.mem_resize(count);
}
else
{
// quick resize without reallocating memory and copying data
access::rw( out.n_nonzero) = count;
access::rw( out.values[count]) = eT(0);
access::rw(out.row_indices[count]) = uword(0);
}
}
}
//
template<typename T1, typename T2>
inline
void
spglue_rel_and::apply(SpMat<uword>& out, const mtSpGlue<uword, T1, T2, spglue_rel_and>& X)
{
arma_extra_debug_sigprint();
const SpProxy<T1> PA(X.A);
const SpProxy<T2> PB(X.B);
const bool is_alias = PA.is_alias(out) || PB.is_alias(out);
if(is_alias == false)
{
spglue_rel_and::apply_noalias(out, PA, PB);
}
else
{
SpMat<uword> tmp;
spglue_rel_and::apply_noalias(tmp, PA, PB);
out.steal_mem(tmp);
}
}
template<typename T1, typename T2>
inline
void
spglue_rel_and::apply_noalias(SpMat<uword>& out, const SpProxy<T1>& PA, const SpProxy<T2>& PB)
{
arma_extra_debug_sigprint();
typedef typename T1::elem_type eT;
arma_debug_assert_same_size(PA.get_n_rows(), PA.get_n_cols(), PB.get_n_rows(), PB.get_n_cols(), "operator&&");
if( (PA.get_n_nonzero() == 0) || (PB.get_n_nonzero() == 0) )
{
out.zeros(PA.get_n_rows(), PA.get_n_cols());
return;
}
const uword max_n_nonzero = (std::min)(PA.get_n_nonzero(), PB.get_n_nonzero());
// Resize memory to upper bound
out.reserve(PA.get_n_rows(), PA.get_n_cols(), max_n_nonzero);
// Now iterate across both matrices.
typename SpProxy<T1>::const_iterator_type x_it = PA.begin();
typename SpProxy<T1>::const_iterator_type x_end = PA.end();
typename SpProxy<T2>::const_iterator_type y_it = PB.begin();
typename SpProxy<T2>::const_iterator_type y_end = PB.end();
uword count = 0;
while( (x_it != x_end) || (y_it != y_end) )
{
const uword x_it_row = x_it.row();
const uword x_it_col = x_it.col();
const uword y_it_row = y_it.row();
const uword y_it_col = y_it.col();
if(x_it == y_it)
{
access::rw(out.values[count]) = uword(1);
access::rw(out.row_indices[count]) = x_it_row;
access::rw(out.col_ptrs[x_it_col + 1])++;
++count;
++x_it;
++y_it;
}
else
{
if((x_it_col < y_it_col) || ((x_it_col == y_it_col) && (x_it_row < y_it_row))) // if y is closer to the end
{
++x_it;
}
else
{
++y_it;
}
}
arma_check( (count > max_n_nonzero), "internal error: spglue_rel_and::apply_noalias(): count > max_n_nonzero" );
}
const uword out_n_cols = out.n_cols;
uword* col_ptrs = access::rwp(out.col_ptrs);
// Fix column pointers to be cumulative.
for(uword c = 1; c <= out_n_cols; ++c)
{
col_ptrs[c] += col_ptrs[c - 1];
}
if(count < max_n_nonzero)
{
if(count <= (max_n_nonzero/2))
{
out.mem_resize(count);
}
else
{
// quick resize without reallocating memory and copying data
access::rw( out.n_nonzero) = count;
access::rw( out.values[count]) = eT(0);
access::rw(out.row_indices[count]) = uword(0);
}
}
}
//
template<typename T1, typename T2>
inline
void
spglue_rel_or::apply(SpMat<uword>& out, const mtSpGlue<uword, T1, T2, spglue_rel_or>& X)
{
arma_extra_debug_sigprint();
const SpProxy<T1> PA(X.A);
const SpProxy<T2> PB(X.B);
const bool is_alias = PA.is_alias(out) || PB.is_alias(out);
if(is_alias == false)
{
spglue_rel_or::apply_noalias(out, PA, PB);
}
else
{
SpMat<uword> tmp;
spglue_rel_or::apply_noalias(tmp, PA, PB);
out.steal_mem(tmp);
}
}
template<typename T1, typename T2>
inline
void
spglue_rel_or::apply_noalias(SpMat<uword>& out, const SpProxy<T1>& PA, const SpProxy<T2>& PB)
{
arma_extra_debug_sigprint();
typedef typename T1::elem_type eT;
arma_debug_assert_same_size(PA.get_n_rows(), PA.get_n_cols(), PB.get_n_rows(), PB.get_n_cols(), "operator||");
const uword max_n_nonzero = PA.get_n_nonzero() + PB.get_n_nonzero();
// Resize memory to upper bound
out.reserve(PA.get_n_rows(), PA.get_n_cols(), max_n_nonzero);
// Now iterate across both matrices.
typename SpProxy<T1>::const_iterator_type x_it = PA.begin();
typename SpProxy<T1>::const_iterator_type x_end = PA.end();
typename SpProxy<T2>::const_iterator_type y_it = PB.begin();
typename SpProxy<T2>::const_iterator_type y_end = PB.end();
uword count = 0;
while( (x_it != x_end) || (y_it != y_end) )
{
const uword x_it_col = x_it.col();
const uword x_it_row = x_it.row();
const uword y_it_col = y_it.col();
const uword y_it_row = y_it.row();
bool use_y_loc = false;
if(x_it == y_it)
{
++x_it;
++y_it;
}
else
{
if((x_it_col < y_it_col) || ((x_it_col == y_it_col) && (x_it_row < y_it_row))) // if y is closer to the end
{
++x_it;
}
else
{
++y_it;
use_y_loc = true;
}
}
access::rw(out.values[count]) = uword(1);
const uword out_row = (use_y_loc == false) ? x_it_row : y_it_row;
const uword out_col = (use_y_loc == false) ? x_it_col : y_it_col;
access::rw(out.row_indices[count]) = out_row;
access::rw(out.col_ptrs[out_col + 1])++;
++count;
arma_check( (count > max_n_nonzero), "internal error: spglue_rel_or::apply_noalias(): count > max_n_nonzero" );
}
const uword out_n_cols = out.n_cols;
uword* col_ptrs = access::rwp(out.col_ptrs);
// Fix column pointers to be cumulative.
for(uword c = 1; c <= out_n_cols; ++c)
{
col_ptrs[c] += col_ptrs[c - 1];
}
if(count < max_n_nonzero)
{
if(count <= (max_n_nonzero/2))
{
out.mem_resize(count);
}
else
{
// quick resize without reallocating memory and copying data
access::rw( out.n_nonzero) = count;
access::rw( out.values[count]) = eT(0);
access::rw(out.row_indices[count]) = uword(0);
}
}
}
//! @}
|
