// Copyright (C) 1999 Jonathan Richard Shewchuk
// Licensed under the GNU LGPL Version 2.1.
// 
// Modified by Johan Jansson, 2006.


#ifndef __GEOMETRIC_PREDICATES_H
#define __GEOMETRIC_PREDICATES_H

#include <dolfin/common/types.h>

namespace dolfin
{

/* GTS - Library for the manipulation of triangulated surfaces
 * Copyright (C) 1999 Stéphane Popinet
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
/* Header file for robust predicates by Jonathan Richard Shewchuk */

double orient2d            (double* pa,
			    double* pb,
			    double* pc);
double orient3d            (double* pa,
			    double* pb,
			    double* pc,
			    double* pd);
double incircle            (double* pa,
			    double* pb,
			    double* pc,
			    double* pd);
double insphere            (double* pa,
			    double* pb,
			    double* pc,
			    double* pd,
			    double* pe);

}

#endif