AbstractLinAlgPack_sparse_bounds.cpp

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00001 #if 0
00002 // @HEADER
00003 // ***********************************************************************
00004 // 
00005 // Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
00006 //                  Copyright (2003) Sandia Corporation
00007 // 
00008 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00009 // license for use of this work by or on behalf of the U.S. Government.
00010 // 
00011 // This library is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Lesser General Public License as
00013 // published by the Free Software Foundation; either version 2.1 of the
00014 // License, or (at your option) any later version.
00015 //  
00016 // This library is distributed in the hope that it will be useful, but
00017 // WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00019 // Lesser General Public License for more details.
00020 //  
00021 // You should have received a copy of the GNU Lesser General Public
00022 // License along with this library; if not, write to the Free Software
00023 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00024 // USA
00025 // Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov) 
00026 // 
00027 // ***********************************************************************
00028 // @HEADER
00029 
00030 #include "AbstractLinAlgPack_sparse_bounds.hpp"
00031 
00035 AbstractLinAlgPack::size_type
00036 AbstractLinAlgPack::num_bounds( const SpVectorSlice& bl, const SpVectorSlice& bu )
00037 {
00038   SpVectorSlice::const_iterator
00039     bl_itr      = bl.begin(),
00040     bl_itr_end    = bl.end(),
00041     bu_itr      = bu.begin(),
00042     bu_itr_end    = bu.end();
00043   size_type num_bounds = 0;
00044   while( bl_itr != bl_itr_end || bu_itr != bu_itr_end ) {
00045     if( ( bl_itr != bl_itr_end )
00046       && ( bu_itr == bu_itr_end || bl_itr->indice() + bl.offset() < bu_itr->indice() + bu.offset() ) )
00047     {
00048       // Only the lower bound is finite
00049       ++bl_itr;
00050     }
00051     else if( ( bu_itr != bu_itr_end )
00052       && ( bl_itr == bl_itr_end || bu_itr->indice() + bu.offset() < bl_itr->indice() + bl.offset()) )
00053     {
00054       // Only the upper bound is finite
00055       ++bu_itr;
00056     }
00057     else if(bl_itr->indice() == bu_itr->indice()) {
00058       // Both bounds exist.
00059       ++bl_itr;
00060       ++bu_itr; 
00061     }
00062     ++num_bounds;
00063   }
00064   return num_bounds;
00065 }
00066 
00067 
00068 #endif // 0

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