/usr/include/tbb/blocked_range3d.h is in libtbb-dev 4.2~20130725-1.1ubuntu1.
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Copyright 2005-2013 Intel Corporation. All Rights Reserved.
This file is part of Threading Building Blocks.
Threading Building Blocks is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
Threading Building Blocks is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Threading Building Blocks; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
As a special exception, you may use this file as part of a free software
library without restriction. Specifically, if other files instantiate
templates or use macros or inline functions from this file, or you compile
this file and link it with other files to produce an executable, this
file does not by itself cause the resulting executable to be covered by
the GNU General Public License. This exception does not however
invalidate any other reasons why the executable file might be covered by
the GNU General Public License.
*/
#ifndef __TBB_blocked_range3d_H
#define __TBB_blocked_range3d_H
#include "tbb_stddef.h"
#include "blocked_range.h"
namespace tbb {
//! A 3-dimensional range that models the Range concept.
/** @ingroup algorithms */
template<typename PageValue, typename RowValue=PageValue, typename ColValue=RowValue>
class blocked_range3d {
public:
//! Type for size of an iteration range
typedef blocked_range<PageValue> page_range_type;
typedef blocked_range<RowValue> row_range_type;
typedef blocked_range<ColValue> col_range_type;
private:
page_range_type my_pages;
row_range_type my_rows;
col_range_type my_cols;
public:
blocked_range3d( PageValue page_begin, PageValue page_end,
RowValue row_begin, RowValue row_end,
ColValue col_begin, ColValue col_end ) :
my_pages(page_begin,page_end),
my_rows(row_begin,row_end),
my_cols(col_begin,col_end)
{
}
blocked_range3d( PageValue page_begin, PageValue page_end, typename page_range_type::size_type page_grainsize,
RowValue row_begin, RowValue row_end, typename row_range_type::size_type row_grainsize,
ColValue col_begin, ColValue col_end, typename col_range_type::size_type col_grainsize ) :
my_pages(page_begin,page_end,page_grainsize),
my_rows(row_begin,row_end,row_grainsize),
my_cols(col_begin,col_end,col_grainsize)
{
}
//! True if range is empty
bool empty() const {
// Yes, it is a logical OR here, not AND.
return my_pages.empty() || my_rows.empty() || my_cols.empty();
}
//! True if range is divisible into two pieces.
bool is_divisible() const {
return my_pages.is_divisible() || my_rows.is_divisible() || my_cols.is_divisible();
}
blocked_range3d( blocked_range3d& r, split ) :
my_pages(r.my_pages),
my_rows(r.my_rows),
my_cols(r.my_cols)
{
if( my_pages.size()*double(my_rows.grainsize()) < my_rows.size()*double(my_pages.grainsize()) ) {
if ( my_rows.size()*double(my_cols.grainsize()) < my_cols.size()*double(my_rows.grainsize()) ) {
my_cols.my_begin = col_range_type::do_split(r.my_cols);
} else {
my_rows.my_begin = row_range_type::do_split(r.my_rows);
}
} else {
if ( my_pages.size()*double(my_cols.grainsize()) < my_cols.size()*double(my_pages.grainsize()) ) {
my_cols.my_begin = col_range_type::do_split(r.my_cols);
} else {
my_pages.my_begin = page_range_type::do_split(r.my_pages);
}
}
}
//! The pages of the iteration space
const page_range_type& pages() const {return my_pages;}
//! The rows of the iteration space
const row_range_type& rows() const {return my_rows;}
//! The columns of the iteration space
const col_range_type& cols() const {return my_cols;}
};
} // namespace tbb
#endif /* __TBB_blocked_range3d_H */
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