From c817c81d9d79fe77b0729216b7db5a7eab56a23c Mon Sep 17 00:00:00 2001 From: "ulrich.bauer@gmail.com" Date: Thu, 28 Feb 2013 19:31:04 +0000 Subject: initial checkin git-svn-id: https://phat.googlecode.com/svn/trunk@2 8e3bb3c2-eed4-f18f-5264-0b6c94e6926d --- include/phat/representations/sparse_pivot_column.h | 62 ++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 include/phat/representations/sparse_pivot_column.h (limited to 'include/phat/representations/sparse_pivot_column.h') diff --git a/include/phat/representations/sparse_pivot_column.h b/include/phat/representations/sparse_pivot_column.h new file mode 100644 index 0000000..c851a2b --- /dev/null +++ b/include/phat/representations/sparse_pivot_column.h @@ -0,0 +1,62 @@ +/* Copyright 2013 IST Austria + Contributed by: Ulrich Bauer, Michael Kerber, Jan Reininghaus + + This file is part of PHAT. + + PHAT is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + PHAT 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 Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with PHAT. If not, see . */ + +#pragma once + +#include +#include + +namespace phat { + class sparse_column { + + protected: + std::set< index > m_data; + + public: + void init( const index total_size ) { + m_data.clear(); + } + + void add_column( const column& col ) { + for( index idx = 0; idx < (index) col.size(); idx++ ) + add_index( col[ idx ] ); + } + + void add_index( const index idx ) { + std::pair< std::set< index >::iterator, bool > result = m_data.insert( idx ); + if( result.second == false ) + m_data.erase( result.first ); + } + + index max_index() { + return m_data.empty() ? -1 : *m_data.rbegin(); + } + + void get_column_and_clear( column& col ) { + col.clear(); + col.assign( m_data.begin(), m_data.end() ); + m_data.clear(); + } + + bool empty() { + return m_data.empty(); + } + }; + + typedef abstract_pivot_column< sparse_column > sparse_pivot_column; +} -- cgit v1.2.3