splitrec.c 2.45 KB
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/*-----------------------------------------------------------------------------------------
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 * Copyright (C) 2016  For the list of authors, see file AUTHORS.
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 *
 * This file is part of DENISE.
 * 
 * DENISE 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, version 2.0 of the License only.
 * 
 * DENISE 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 DENISE. See file COPYING and/or <http://www.gnu.org/licenses/gpl-2.0.html>.
-----------------------------------------------------------------------------------------*/

/*  Computation of local receiver coordinates
 *  (within each subgrid)
 *	 
 *   update 11.02.02, T. Bohlen
 *   last update 02.09.11 M. Schfer
 */
 
 #include "fd.h"
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int **splitrec(int **recpos,int *ntr_loc, int ntr, int *recswitch){
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	extern int IENDX, IENDY, POS[4], REC1, REC2;

	int a,b,i=0,j,k,found=0;
	int ** recpos_dummy, **recpos_local=NULL;
	recpos_dummy = imatrix(1,3,1,ntr);
        
	REC1=0;
	REC2=0;
	
	for (j=1;j<=ntr;j++)
	{
		recswitch[j] = 0;
		a=(recpos[1][j]-1)/IENDX;
		b=(recpos[2][j]-1)/IENDY;

		if ((POS[1]==a)&&(POS[2]==b))
		{
			found = 1;
			recswitch[j] = 1;
			  if(REC1==0){
			     REC1=j;
			  }
			i++;	/* Anzahl der Empfnger i jedes Prozesses ermitteln */
			recpos_dummy[1][i] = ((recpos[1][j]-1)%IENDX)+1;
			recpos_dummy[2][i] = ((recpos[2][j]-1)%IENDY)+1;
			recpos_dummy[3][i] = j;
		}
	}
   
        if (i>0) recpos_local = imatrix(1,3,1,i);
	REC2=REC1+(i-1);
	for (k=1;k<=i;k++){
		recpos_local[1][k] = recpos_dummy[1][k];
		recpos_local[2][k] = recpos_dummy[2][k];
		recpos_local[3][k] = recpos_dummy[3][k];
	}
	free_imatrix(recpos_dummy,1,3,1,ntr);

/*	
	fprintf(FP,"\n **Message from split_rec:\n");
	fprintf(FP," Splitting of receivers from global to local grids finished.\n");
	fprintf(FP," MYID \t \t no. of receivers\n");
	fprintf(FP," %d \t\t %d\n",MYID,i);

	fprintf(FP,"\n **Message from split_rec:\n");
	fprintf(FP," Table of local receiver positions (in gridpoints):\n");
	fprintf(FP," MYID \t x \t y\n");

	for (j=1;j<=i;j++)
		fprintf(FP," %d \t %d \t %d\n",
		    MYID,recpos_local[1][j],recpos_local[2][j]);
*/
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	*ntr_loc=i;
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	return recpos_local;

}