**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-** Copyright (c) 2007 Chris Moore
+** Copyright (c) 2007, 2008 Chris Moore
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
etl::hermite<Vector> curve(segment.p1,segment.p2,segment.t1,segment.t2);
etl::derivative< etl::hermite<Vector> > deriv(curve);
-#ifdef ETL_FIXED_DERIVATIVE
- return deriv((*amount_)(t).get(Real()))*(0.5);
-#else
- return deriv((*amount_)(t).get(Real()))*(-0.5);
-#endif
-
+ return deriv((*amount_)(t).get(Real()));
}