File: cs_equation_common.h

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#ifndef __CS_EQUATION_COMMON_H__
#define __CS_EQUATION_COMMON_H__

/*============================================================================
 * Routines to handle common equation features for building algebraic system
 * in CDO schemes
 *============================================================================*/

/*
  This file is part of Code_Saturne, a general-purpose CFD tool.

  Copyright (C) 1998-2016 EDF S.A.

  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., 51 Franklin
  Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/

/*----------------------------------------------------------------------------
 *  Local headers
 *----------------------------------------------------------------------------*/

#include "cs_cdo_connect.h"
#include "cs_cdo_quantities.h"
#include "cs_time_step.h"

/*----------------------------------------------------------------------------*/

BEGIN_C_DECLS

/*============================================================================
 * Macro definitions
 *============================================================================*/

/*============================================================================
 * Type definitions
 *============================================================================*/

/*============================================================================
 * Public function prototypes
 *============================================================================*/

/*----------------------------------------------------------------------------*/
/*!
 * \brief  Allocate a pointer to a buffer of size at least the 2*n_cells for
 *         managing temporary usage of memory when dealing with equations
 *         Call specific structure allocation related to a numerical scheme
 *         according the scheme flag
 *         The size of the temporary buffer can be bigger according to the
 *         numerical settings
 *         Set also shared pointers from the main domain members
 *
 * \param[in]  connect       pointer to a cs_cdo_connect_t structure
 * \param[in]  quant         pointer to additional mesh quantities struct.
 * \param[in]  time_step     pointer to a time step structure
 * \param[in]  scheme_flag   flag to identify which kind of numerical scheme is
 *                           requested to solve the computational domain
 */
/*----------------------------------------------------------------------------*/

void
cs_equation_allocate_common_structures(const cs_cdo_connect_t     *connect,
                                       const cs_cdo_quantities_t  *quant,
                                       const cs_time_step_t       *time_step,
                                       cs_flag_t                   scheme_flag);

/*----------------------------------------------------------------------------*/
/*!
 * \brief  Allocate a pointer to a buffer of size at least the 2*n_cells for
 *         managing temporary usage of memory when dealing with equations
 *         Call specific structure allocation related to a numerical scheme
 *         according the scheme flag
 *         The size of the temporary buffer can be bigger according to the
 *         numerical settings
 *
 * \param[in]  scheme_flag   flag to identify which kind of numerical scheme is
 *                           requested to solve the computational domain
 */
/*----------------------------------------------------------------------------*/

void
cs_equation_free_common_structures(cs_flag_t   scheme_flag);

/*----------------------------------------------------------------------------*/
/*!
 * \brief  Retrieve a pointer to a buffer of size at least the 2*n_cells
 *         The size of the temporary buffer can be bigger according to the
 *         numerical settings
 *
 * \return  a pointer to an array of double
 */
/*----------------------------------------------------------------------------*/

cs_real_t *
cs_equation_get_tmpbuf(void);

/*----------------------------------------------------------------------------*/
/*!
 * \brief  Get the allocation size of the temporary buffer
 *
 * \return  the size of the temporary buffer
 */
/*----------------------------------------------------------------------------*/

size_t
cs_equation_get_tmpbuf_size(void);

/*----------------------------------------------------------------------------*/

END_C_DECLS

#endif /* __CS_EQUATION_COMMON_H__ */