mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-27 23:13:01 +00:00
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/*
|
|
* Copyright (c) 2003, 2007-14 Matteo Frigo
|
|
* Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
/* out of place 2D copy routines */
|
|
#include "kernel/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));
|
|
}
|