55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
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/*
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----
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This file is part of SECONDO.
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Copyright (C) 2004, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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*/
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/*
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1 Distance Computations
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This file supports the main memomry based m-tree implemented
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in file MMMTree.h. If you want to store variables of type ~X~
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into an mm-m-tree, there must exist a distance function.
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This function can be defined within this file.
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*/
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#ifndef DISTANCES_H
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#define DISTANCES_H
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double distance(const int i, const int j){
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int diff = i-j;
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return diff<0?-diff:diff;
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}
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double distance(const double i, const double j){
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double diff = i-j;
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return diff<0?-diff:diff;
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}
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#endif
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