//***********************************************************************
//  pde.h
//  authors: Matthew Judd and John Karpovich
//           mrj2p@virginia.edu and jfk3w@virginia.edu
//           University of Virginia
//           December 7, 1992
//
//	     adapted from code by Ambar Sarkar
//
//  compilation:
//      make -f serial	- serial version
//      make all	- parallel MENTAT version
//
//  description:
//      Class definitions for pde and related objects
//
//  user responsibility:
//      Write setRowsAndCols() code - this code initializes the number of rows
//	and columns in the image. It also initializes the window variables to 
//	include the whole image.
//
//      Write getNextStencil() code - this function both returns the next stencil
//      to apply to the matrix, and decides whether or not to stop applying
//      filters.
//
//      Write prepareDest() code - this function prepares the destination file
//      to receive the final image from the stencil_workers.  Any information
//      the destination file needs other than that image must be written here.
//***********************************************************************


// ****************************************************************************
//
//              Copyright (c) 1992
//              University of Virginia
//              All Rights Reserved
//
//              This software is the property of the University of Virginia.
//              This software is provided `as is' and without any express or
//              implied warrenties.
//
//              Send problems & suggestions to:
//              Andrew Grimshaw (grimshaw@cs.virginia.edu)
//
// **************************************************************************


#include <stdio.h>
#include "Stenciler.h"

#ifndef SERIAL
persistent mentat class pde : public Stenciler {
#else
class pde : public Stenciler {
#endif
  public:

    void 	workers_alloc(int pieces);
    void 	destroy_workers(int pieces);
    void	getMatrixPiece();
    void	putMatrixPiece();
    void	doStencilPiece(stencil *st);

    void  	prepareDest();
    stencil*	getNextStencil();
    int		setRowsCols();

    float 	checkConvergence();
    float	checkConvergencePiece();
};