2 // interpolater.hxx -- routines to handle linear interpolation from a table of
3 // x,y The table must be sorted by "x" in ascending order
5 // Written by Curtis Olson, started April 1998.
7 // Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
9 // This program is free software; you can redistribute it and/or
10 // modify it under the terms of the GNU General Public License as
11 // published by the Free Software Foundation; either version 2 of the
12 // License, or (at your option) any later version.
14 // This program is distributed in the hope that it will be useful, but
15 // WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 // General Public License for more details.
19 // You should have received a copy of the GNU General Public License
20 // along with this program; if not, write to the Free Software
21 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #ifndef _INTERPOLATER_H
27 #define _INTERPOLATER_H
31 # error This library requires C++
34 #include "Include/compiler.h"
39 #define MAX_TABLE_SIZE 32
44 double table[MAX_TABLE_SIZE][2];
48 // Constructor -- loads the interpolation table from the specified
50 fgINTERPTABLE( const string& file );
52 // Given an x value, linearly interpolate the y value from the table
53 double interpolate(double x);
56 ~fgINTERPTABLE( void );
60 #endif // _INTERPOLATER_H