view Lib/fftw-3.2.1/kernel/tile2d.c @ 1:e86e9c111b29

Updates stuff that potentially fixes the memory leak and also makes it work on Windows and Linux (Need to test). Still have to fix fftw include for linux in Jucer.

/*
 * Copyright (c) 2003, 2007-8 Matteo Frigo
 * Copyright (c) 2003, 2007-8 Massachusetts Institute of Technology
 *
 * 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
 *
 */

/* out of place 2D copy routines */
#include "ifftw.h"

void X(tile2d)(INT n0l, INT n0u, INT n1l, INT n1u, INT tilesz,
	       void (*f)(INT n0l, INT n0u, INT n1l, INT n1u, void *args),
	       void *args)
{
     INT d0, d1;

     A(tilesz > 0); /* infinite loops otherwise */
     
 tail:
     d0 = n0u - n0l;
     d1 = n1u - n1l;

     if (d0 >= d1 && d0 > tilesz) {
	  INT n0m = (n0u + n0l) / 2;
	  X(tile2d)(n0l, n0m, n1l, n1u, tilesz, f, args);
	  n0l = n0m; goto tail;
     } else if (/* d1 >= d0 && */ d1 > tilesz) {
	  INT n1m = (n1u + n1l) / 2;
	  X(tile2d)(n0l, n0u, n1l, n1m, tilesz, f, args);
	  n1l = n1m; goto tail;
     } else {
	  f(n0l, n0u, n1l, n1u, args);
     }
}

INT X(compute_tilesz)(INT vl, int how_many_tiles_in_cache)
{
     return X(isqrt)(CACHESIZE / 
		     (((INT)sizeof(R)) * vl * (INT)how_many_tiles_in_cache));
}