mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-23 13:05:11 +00:00
68 lines
2.2 KiB
C
68 lines
2.2 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 copy routines for pairs of isomorphic 2D arrays */
|
|
#include "kernel/ifftw.h"
|
|
|
|
void X(cpy2d_pair)(R *I0, R *I1, R *O0, R *O1,
|
|
INT n0, INT is0, INT os0,
|
|
INT n1, INT is1, INT os1)
|
|
{
|
|
INT i0, i1;
|
|
|
|
for (i1 = 0; i1 < n1; ++i1)
|
|
for (i0 = 0; i0 < n0; ++i0) {
|
|
R x0 = I0[i0 * is0 + i1 * is1];
|
|
R x1 = I1[i0 * is0 + i1 * is1];
|
|
O0[i0 * os0 + i1 * os1] = x0;
|
|
O1[i0 * os0 + i1 * os1] = x1;
|
|
}
|
|
}
|
|
|
|
void X(zero1d_pair)(R *O0, R *O1, INT n0, INT os0)
|
|
{
|
|
INT i0;
|
|
for (i0 = 0; i0 < n0; ++i0) {
|
|
O0[i0 * os0] = 0;
|
|
O1[i0 * os0] = 0;
|
|
}
|
|
}
|
|
|
|
/* like cpy2d_pair, but read input contiguously if possible */
|
|
void X(cpy2d_pair_ci)(R *I0, R *I1, R *O0, R *O1,
|
|
INT n0, INT is0, INT os0,
|
|
INT n1, INT is1, INT os1)
|
|
{
|
|
if (IABS(is0) < IABS(is1)) /* inner loop is for n0 */
|
|
X(cpy2d_pair) (I0, I1, O0, O1, n0, is0, os0, n1, is1, os1);
|
|
else
|
|
X(cpy2d_pair) (I0, I1, O0, O1, n1, is1, os1, n0, is0, os0);
|
|
}
|
|
|
|
/* like cpy2d_pair, but write output contiguously if possible */
|
|
void X(cpy2d_pair_co)(R *I0, R *I1, R *O0, R *O1,
|
|
INT n0, INT is0, INT os0,
|
|
INT n1, INT is1, INT os1)
|
|
{
|
|
if (IABS(os0) < IABS(os1)) /* inner loop is for n0 */
|
|
X(cpy2d_pair) (I0, I1, O0, O1, n0, is0, os0, n1, is1, os1);
|
|
else
|
|
X(cpy2d_pair) (I0, I1, O0, O1, n1, is1, os1, n0, is0, os0);
|
|
}
|