/*
* The 3D Studio File Format Library
* Copyright (C) 1996-2001 by J.E. Hoffmann
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
#define LIB3DS_EXPORT
#include "lib3ds_float.h"
/*!
* \defgroup float Floating Point Mathematics
*
* \author J.E. Hoffmann
*/
/*!
* \ingroup float
*/
Lib3dsFloat
lib3ds_float_cubic(Lib3dsFloat a, Lib3dsFloat p, Lib3dsFloat q, Lib3dsFloat b, Lib3dsFloat t)
{
Lib3dsDouble x,y,z,w;
x=2*t*t*t - 3*t*t + 1;
y=-2*t*t*t + 3*t*t;
z=t*t*t - 2*t*t + t;
w=t*t*t - t*t;
return((Lib3dsFloat)(x*a + y*b + z*p + w*q));
}