2 Copyright (C) 2000 Paul Barton-Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #ifndef __pbd_scale_h__
22 #define __pbd_scale_h__
27 scale (float value, float lower, float upper)
29 return fabs (lower + value) / (upper-lower);
33 scale_with_range (float value, float lower, float range)
35 return fabs (lower + value) / range;
40 scale_to (float value, float lower, float upper, float to)
42 return (fabs (lower + value) / (upper-lower)) * to;
46 scale_to_with_range (float value, float lower, float range, float to)
48 return (fabs (lower + value) / range) * to;
51 #endif /* __pbd_scale_h__ */