/***************************************************************************
 *   Copyright (C) 2009 by Douglas Castro   *
 *   douglas@ime.unicamp.br   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef _FLUXO_H_
#define _FLUXO_H_

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

/** Nota: isso vai valer pra dimensao superior??? */

/**
 * Funcao para calcular o fluxo numerico na interface das celulas i e i+1 para equacao de adveccao.
 * Isto e, o fluxo no ponto i+1/2
 * @param u1 [in] valor da media na celula i-1
 * @param u2 [in] valor da media na celula i
 * @param u3 [in] valor da media na celula i+1
 * @param c [in] velocidade de adveccao .. deefinida na equacao diferencial
 */
double flux(double u1, double u2, double u3, double c);

#endif