83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
//
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// interpolater.hxx -- routines to handle linear interpolation from a table of
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// x,y The table must be sorted by "x" in ascending order
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//
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// Written by Curtis Olson, started April 1998.
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//
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// Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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// (Log is kept at end of this file)
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#ifndef _INTERPOLATER_H
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#define _INTERPOLATER_H
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#ifndef __cplusplus
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# error This library requires C++
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#endif
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#include <string>
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#include "Include/compiler.h"
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FG_USING_STD(string);
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#define MAX_TABLE_SIZE 32
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class fgINTERPTABLE {
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int size;
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double table[MAX_TABLE_SIZE][2];
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public:
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// Constructor -- loads the interpolation table from the specified
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// file
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fgINTERPTABLE( const string& file );
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// Given an x value, linearly interpolate the y value from the table
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double interpolate(double x);
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// Destructor
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~fgINTERPTABLE( void );
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};
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#endif // _INTERPOLATER_H
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// $Log$
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// Revision 1.4 1999/01/27 04:46:17 curt
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// Portability tweaks by Bernie Bright.
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//
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// Revision 1.3 1998/11/06 21:17:28 curt
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// Converted to new logstream debugging facility. This allows release
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// builds with no messages at all (and no performance impact) by using
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// the -DFG_NDEBUG flag.
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//
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// Revision 1.2 1998/04/22 13:18:10 curt
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// C++ - ified comments. Make file open errors fatal.
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//
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// Revision 1.1 1998/04/21 19:14:23 curt
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// Modified Files:
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// Makefile.am Makefile.in
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// Added Files:
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// interpolater.cxx interpolater.hxx
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//
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