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1 /*
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2 * Copyright (c) 2003, 2007-11 Matteo Frigo
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3 * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
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4 *
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5 * This program is free software; you can redistribute it and/or modify
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6 * it under the terms of the GNU General Public License as published by
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7 * the Free Software Foundation; either version 2 of the License, or
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8 * (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program; if not, write to the Free Software
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17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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18 *
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19 */
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20
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21 #include "api.h"
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22 #include "dft.h"
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23
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24 X(plan) XGURU(split_dft)(int rank, const IODIM *dims,
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25 int howmany_rank, const IODIM *howmany_dims,
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26 R *ri, R *ii, R *ro, R *io, unsigned flags)
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27 {
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28 if (!GURU_KOSHERP(rank, dims, howmany_rank, howmany_dims)) return 0;
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29
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30 return X(mkapiplan)(
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31 ii - ri == 1 && io - ro == 1 ? FFT_SIGN : -FFT_SIGN, flags,
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32 X(mkproblem_dft_d)(MKTENSOR_IODIMS(rank, dims, 1, 1),
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33 MKTENSOR_IODIMS(howmany_rank, howmany_dims,
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34 1, 1),
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35 TAINT_UNALIGNED(ri, flags),
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36 TAINT_UNALIGNED(ii, flags),
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37 TAINT_UNALIGNED(ro, flags),
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38 TAINT_UNALIGNED(io, flags)));
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39 }
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