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1 /*
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2 * Copyright (c) 2003, 2007-14 Matteo Frigo
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3 * Copyright (c) 2003, 2007-14 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 "ifftw-mpi.h"
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22
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23 /* r2c and c2r transforms. The sz dtensor, as usual, gives the size
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24 of the "logical" complex array. For the last dimension N, however,
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25 only N/2+1 complex numbers are stored for the complex data. Moreover,
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26 for the real data, the last dimension is *always* padded to a size
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27 2*(N/2+1). (Contrast this with the serial API, where there is only
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28 padding for in-place plans.) */
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29
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30 /* problem.c: */
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31 typedef struct {
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32 problem super;
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33 dtensor *sz;
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34 INT vn; /* vector length (vector stride 1) */
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35 R *I, *O; /* contiguous interleaved arrays */
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36
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37 rdft_kind kind; /* assert(kind < DHT) */
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38 unsigned flags; /* TRANSPOSED_IN/OUT meaningful for rnk>1 only
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39 SCRAMBLED_IN/OUT meaningful for 1d transforms only */
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40
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41 MPI_Comm comm;
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42 } problem_mpi_rdft2;
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43
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44 problem *XM(mkproblem_rdft2)(const dtensor *sz, INT vn,
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45 R *I, R *O, MPI_Comm comm,
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46 rdft_kind kind, unsigned flags);
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47 problem *XM(mkproblem_rdft2_d)(dtensor *sz, INT vn,
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48 R *I, R *O, MPI_Comm comm,
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49 rdft_kind kind, unsigned flags);
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50
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51 /* solve.c: */
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52 void XM(rdft2_solve)(const plan *ego_, const problem *p_);
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53
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54 /* plans have same operands as rdft plans, so just re-use */
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55 typedef plan_rdft plan_mpi_rdft2;
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56 #define MKPLAN_MPI_RDFT2(type, adt, apply) \
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57 (type *)X(mkplan_rdft)(sizeof(type), adt, apply)
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58
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59 int XM(rdft2_serial_applicable)(const problem_mpi_rdft2 *p);
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60
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61 /* various solvers */
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62 void XM(rdft2_rank_geq2_register)(planner *p);
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63 void XM(rdft2_rank_geq2_transposed_register)(planner *p);
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64 void XM(rdft2_serial_register)(planner *p);
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