mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-05 04:15:05 +00:00
92 lines
2.7 KiB
C
92 lines
2.7 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
|
|
*
|
|
*/
|
|
|
|
|
|
#include "kernel/ifftw.h"
|
|
|
|
static void dimcpy(iodim *dst, const iodim *src, int rnk)
|
|
{
|
|
int i;
|
|
if (FINITE_RNK(rnk))
|
|
for (i = 0; i < rnk; ++i)
|
|
dst[i] = src[i];
|
|
}
|
|
|
|
tensor *X(tensor_copy)(const tensor *sz)
|
|
{
|
|
tensor *x = X(mktensor)(sz->rnk);
|
|
dimcpy(x->dims, sz->dims, sz->rnk);
|
|
return x;
|
|
}
|
|
|
|
/* like X(tensor_copy), but makes strides in-place by
|
|
setting os = is if k == INPLACE_IS or is = os if k == INPLACE_OS. */
|
|
tensor *X(tensor_copy_inplace)(const tensor *sz, inplace_kind k)
|
|
{
|
|
tensor *x = X(tensor_copy)(sz);
|
|
if (FINITE_RNK(x->rnk)) {
|
|
int i;
|
|
if (k == INPLACE_OS)
|
|
for (i = 0; i < x->rnk; ++i)
|
|
x->dims[i].is = x->dims[i].os;
|
|
else
|
|
for (i = 0; i < x->rnk; ++i)
|
|
x->dims[i].os = x->dims[i].is;
|
|
}
|
|
return x;
|
|
}
|
|
|
|
/* Like X(tensor_copy), but copy all of the dimensions *except*
|
|
except_dim. */
|
|
tensor *X(tensor_copy_except)(const tensor *sz, int except_dim)
|
|
{
|
|
tensor *x;
|
|
|
|
A(FINITE_RNK(sz->rnk) && sz->rnk >= 1 && except_dim < sz->rnk);
|
|
x = X(mktensor)(sz->rnk - 1);
|
|
dimcpy(x->dims, sz->dims, except_dim);
|
|
dimcpy(x->dims + except_dim, sz->dims + except_dim + 1,
|
|
x->rnk - except_dim);
|
|
return x;
|
|
}
|
|
|
|
/* Like X(tensor_copy), but copy only rnk dimensions starting
|
|
with start_dim. */
|
|
tensor *X(tensor_copy_sub)(const tensor *sz, int start_dim, int rnk)
|
|
{
|
|
tensor *x;
|
|
|
|
A(FINITE_RNK(sz->rnk) && start_dim + rnk <= sz->rnk);
|
|
x = X(mktensor)(rnk);
|
|
dimcpy(x->dims, sz->dims + start_dim, rnk);
|
|
return x;
|
|
}
|
|
|
|
tensor *X(tensor_append)(const tensor *a, const tensor *b)
|
|
{
|
|
if (!FINITE_RNK(a->rnk) || !FINITE_RNK(b->rnk)) {
|
|
return X(mktensor)(RNK_MINFTY);
|
|
} else {
|
|
tensor *x = X(mktensor)(a->rnk + b->rnk);
|
|
dimcpy(x->dims, a->dims, a->rnk);
|
|
dimcpy(x->dims + a->rnk, b->dims, b->rnk);
|
|
return x;
|
|
}
|
|
}
|