mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-18 10:35:11 +00:00
39 lines
1.4 KiB
C
39 lines
1.4 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
|
|
*
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include "api/api.h"
|
|
|
|
const int *X(rdft2_pad)(int rnk, const int *n, const int *nembed,
|
|
int inplace, int cmplx, int **nfree)
|
|
{
|
|
A(FINITE_RNK(rnk));
|
|
*nfree = 0;
|
|
if (!nembed && rnk > 0) {
|
|
if (inplace || cmplx) {
|
|
int *np = (int *) MALLOC(sizeof(int) * (unsigned)rnk, PROBLEMS);
|
|
memcpy(np, n, sizeof(int) * (unsigned)rnk);
|
|
np[rnk - 1] = (n[rnk - 1] / 2 + 1) * (1 + !cmplx);
|
|
nembed = *nfree = np;
|
|
} else
|
|
nembed = n;
|
|
}
|
|
return nembed;
|
|
}
|