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annotate liboctave/oct-fftw.cc @ 12149:0364b6c76b37 release-3-4-x

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octave_scalar_struct::print_raw: avoid unnecessary conversion of map contents to Cell
author John W. Eaton <jwe@octave.org>
date Sun, 23 Jan 2011 22:31:29 -0500
parents 12df7854fa7c
children 7dd7cccf0757
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1 /*
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2
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3 Copyright (C) 2001-2011 John W. Eaton
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4
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5 This file is part of Octave.
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6
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
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10 option) any later version.
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11
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
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21 */
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22
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #if defined (HAVE_FFTW)
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29 #include <iostream>
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30 #include <vector>
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31
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32 #include "lo-error.h"
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33 #include "oct-fftw.h"
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34 #include "quit.h"
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35 #include "oct-locbuf.h"
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36
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37 octave_fftw_planner *octave_fftw_planner::instance = 0;
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38
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39 // Helper class to create and cache fftw plans for both 1d and
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40 // 2d. This implementation defaults to using FFTW_ESTIMATE to create
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41 // the plans, which in theory is suboptimal, but provides quit
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42 // reasonable performance.
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43
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44 // Also note that if FFTW_ESTIMATE is not used the planner in FFTW3
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45 // destroys the input and output arrays. We must therefore create a
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46 // temporary input array with the same size and 16-byte alignment as
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47 // the original array and use that for the planner. Note that we also
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48 // use any wisdom that is available, either in a FFTW3 system wide file
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49 // or as supplied by the user.
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50
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51 // FIXME -- if we can ensure 16 byte alignment in Array<T>
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52 // (<T> *data) the FFTW3 can use SIMD instructions for further
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53 // acceleration.
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54
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55 // Note that it is profitable to store the FFTW3 plans, for small
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56 // ffts.
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57
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58 octave_fftw_planner::octave_fftw_planner (void)
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59 : meth (ESTIMATE), rplan (0), rd (0), rs (0), rr (0), rh (0), rn (),
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60 rsimd_align (false)
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61 {
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62 plan[0] = plan[1] = 0;
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63 d[0] = d[1] = s[0] = s[1] = r[0] = r[1] = h[0] = h[1] = 0;
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64 simd_align[0] = simd_align[1] = false;
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65 inplace[0] = inplace[1] = false;
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66 n[0] = n[1] = dim_vector ();
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67
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68 // If we have a system wide wisdom file, import it.
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69 fftw_import_system_wisdom ();
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70 }
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71
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72 bool
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73 octave_fftw_planner::instance_ok (void)
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74 {
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75 bool retval = true;
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76
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77 if (! instance)
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78 instance = new octave_fftw_planner ();
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79
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80 if (! instance)
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81 {
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82 (*current_liboctave_error_handler)
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83 ("unable to create octave_fftw_planner object!");
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84
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85 retval = false;
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86 }
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87
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88 return retval;
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89 }
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90
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91 #define CHECK_SIMD_ALIGNMENT(x) \
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92 (((reinterpret_cast<ptrdiff_t> (x)) & 0xF) == 0)
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93
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94 fftw_plan
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95 octave_fftw_planner::do_create_plan (int dir, const int rank,
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96 const dim_vector dims,
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97 octave_idx_type howmany,
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98 octave_idx_type stride,
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99 octave_idx_type dist,
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100 const Complex *in, Complex *out)
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101 {
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102 int which = (dir == FFTW_FORWARD) ? 0 : 1;
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103 fftw_plan *cur_plan_p = &plan[which];
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104 bool create_new_plan = false;
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105 bool ioalign = CHECK_SIMD_ALIGNMENT (in) && CHECK_SIMD_ALIGNMENT (out);
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106 bool ioinplace = (in == out);
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107
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108 // Don't create a new plan if we have a non SIMD plan already but
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109 // can do SIMD. This prevents endlessly recreating plans if we
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110 // change the alignment.
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111
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112 if (plan[which] == 0 || d[which] != dist || s[which] != stride
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113 || r[which] != rank || h[which] != howmany
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114 || ioinplace != inplace[which]
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115 || ((ioalign != simd_align[which]) ? !ioalign : false))
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116 create_new_plan = true;
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117 else
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118 {
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119 // We still might not have the same shape of array.
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120
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121 for (int i = 0; i < rank; i++)
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122 if (dims(i) != n[which](i))
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123 {
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124 create_new_plan = true;
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125 break;
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126 }
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127 }
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128
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129 if (create_new_plan)
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130 {
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131 d[which] = dist;
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132 s[which] = stride;
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133 r[which] = rank;
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134 h[which] = howmany;
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135 simd_align[which] = ioalign;
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136 inplace[which] = ioinplace;
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137 n[which] = dims;
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138
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139 // Note reversal of dimensions for column major storage in FFTW.
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140 octave_idx_type nn = 1;
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141 OCTAVE_LOCAL_BUFFER (int, tmp, rank);
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142
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143 for (int i = 0, j = rank-1; i < rank; i++, j--)
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144 {
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145 tmp[i] = dims(j);
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parents: 10158
diff changeset
146 nn *= dims(j);
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
147 }
6228
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parents: 5775
diff changeset
148
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
149 int plan_flags = 0;
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
150 bool plan_destroys_in = true;
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
151
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parents: 11523
diff changeset
152 switch (meth)
10314
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parents: 10158
diff changeset
153 {
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
154 case UNKNOWN:
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
155 case ESTIMATE:
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
156 plan_flags |= FFTW_ESTIMATE;
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parents: 10158
diff changeset
157 plan_destroys_in = false;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
158 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
159 case MEASURE:
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
160 plan_flags |= FFTW_MEASURE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
161 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
162 case PATIENT:
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
163 plan_flags |= FFTW_PATIENT;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
164 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
165 case EXHAUSTIVE:
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
166 plan_flags |= FFTW_EXHAUSTIVE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
167 break;
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
168 case HYBRID:
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
169 if (nn < 8193)
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
170 plan_flags |= FFTW_MEASURE;
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
171 else
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
172 {
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
173 plan_flags |= FFTW_ESTIMATE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
174 plan_destroys_in = false;
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
175 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
176 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
177 }
6228
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diff changeset
178
4808
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jwe
parents: 4788
diff changeset
179 if (ioalign)
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diff changeset
180 plan_flags &= ~FFTW_UNALIGNED;
4808
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jwe
parents: 4788
diff changeset
181 else
10314
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parents: 10158
diff changeset
182 plan_flags |= FFTW_UNALIGNED;
4808
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jwe
parents: 4788
diff changeset
183
3828
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jwe
parents:
diff changeset
184 if (*cur_plan_p)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
185 fftw_destroy_plan (*cur_plan_p);
3828
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jwe
parents:
diff changeset
186
6228
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dbateman
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diff changeset
187 if (plan_destroys_in)
10314
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parents: 10158
diff changeset
188 {
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
189 // Create matrix with the same size and 16-byte alignment as input
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
190 OCTAVE_LOCAL_BUFFER (Complex, itmp, nn * howmany + 32);
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
191 itmp = reinterpret_cast<Complex *>
11586
12df7854fa7c strip trailing whitespace from source files
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parents: 11523
diff changeset
192 (((reinterpret_cast<ptrdiff_t>(itmp) + 15) & ~ 0xF) +
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
193 ((reinterpret_cast<ptrdiff_t> (in)) & 0xF));
4809
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jwe
parents: 4808
diff changeset
194
10314
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
195 *cur_plan_p =
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
196 fftw_plan_many_dft (rank, tmp, howmany,
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
197 reinterpret_cast<fftw_complex *> (itmp),
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
198 0, stride, dist, reinterpret_cast<fftw_complex *> (out),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
199 0, stride, dist, dir, plan_flags);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
200 }
6228
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
201 else
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
202 {
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
203 *cur_plan_p =
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
204 fftw_plan_many_dft (rank, tmp, howmany,
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
205 reinterpret_cast<fftw_complex *> (const_cast<Complex *> (in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
206 0, stride, dist, reinterpret_cast<fftw_complex *> (out),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
207 0, stride, dist, dir, plan_flags);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
208 }
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
209
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
210 if (*cur_plan_p == 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
211 (*current_liboctave_error_handler) ("Error creating fftw plan");
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
212 }
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
213
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
214 return *cur_plan_p;
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
215 }
11586
12df7854fa7c strip trailing whitespace from source files
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parents: 11523
diff changeset
216
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
217 fftw_plan
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
218 octave_fftw_planner::do_create_plan (const int rank, const dim_vector dims,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
219 octave_idx_type howmany,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
220 octave_idx_type stride,
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
221 octave_idx_type dist,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
222 const double *in, Complex *out)
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
223 {
4773
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parents: 3874
diff changeset
224 fftw_plan *cur_plan_p = &rplan;
3828
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parents:
diff changeset
225 bool create_new_plan = false;
4808
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jwe
parents: 4788
diff changeset
226 bool ioalign = CHECK_SIMD_ALIGNMENT (in) && CHECK_SIMD_ALIGNMENT (out);
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
227
4809
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jwe
parents: 4808
diff changeset
228 // Don't create a new plan if we have a non SIMD plan already but
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
229 // can do SIMD. This prevents endlessly recreating plans if we
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
230 // change the alignment.
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
231
4783
55975a3073be [project @ 2004-02-17 17:16:37 by jwe]
jwe
parents: 4775
diff changeset
232 if (rplan == 0 || rd != dist || rs != stride || rr != rank
4808
a9ec0ce18568 [project @ 2004-03-02 17:36:28 by jwe]
jwe
parents: 4788
diff changeset
233 || rh != howmany || ((ioalign != rsimd_align) ? !ioalign : false))
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
234 create_new_plan = true;
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
235 else
4809
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
236 {
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
237 // We still might not have the same shape of array.
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
238
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
239 for (int i = 0; i < rank; i++)
10314
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
240 if (dims(i) != rn(i))
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
241 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
242 create_new_plan = true;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
243 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
244 }
4809
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
245 }
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
246
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
247 if (create_new_plan)
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
248 {
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
249 rd = dist;
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
250 rs = stride;
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
251 rr = rank;
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
252 rh = howmany;
4808
a9ec0ce18568 [project @ 2004-03-02 17:36:28 by jwe]
jwe
parents: 4788
diff changeset
253 rsimd_align = ioalign;
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
254 rn = dims;
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
255
6228
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parents: 5775
diff changeset
256 // Note reversal of dimensions for column major storage in FFTW.
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
257 octave_idx_type nn = 1;
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
258 OCTAVE_LOCAL_BUFFER (int, tmp, rank);
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
259
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
260 for (int i = 0, j = rank-1; i < rank; i++, j--)
10314
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parents: 10158
diff changeset
261 {
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
262 tmp[i] = dims(j);
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
263 nn *= dims(j);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
264 }
6228
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
265
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
266 int plan_flags = 0;
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
267 bool plan_destroys_in = true;
aa5df9ba98d5 [project @ 2007-01-05 22:49:03 by dbateman]
dbateman
parents: 5775
diff changeset
268
11586
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parents: 11523
diff changeset
269 switch (meth)
10314
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
270 {
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
271 case UNKNOWN:
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
272 case ESTIMATE:
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
273 plan_flags |= FFTW_ESTIMATE;
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
274 plan_destroys_in = false;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
275 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
276 case MEASURE:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
277 plan_flags |= FFTW_MEASURE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
278 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
279 case PATIENT:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
280 plan_flags |= FFTW_PATIENT;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
281 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
282 case EXHAUSTIVE:
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
283 plan_flags |= FFTW_EXHAUSTIVE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
284 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
285 case HYBRID:
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
286 if (nn < 8193)
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
287 plan_flags |= FFTW_MEASURE;
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
288 else
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
289 {
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
290 plan_flags |= FFTW_ESTIMATE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
291 plan_destroys_in = false;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
292 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
293 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
294 }
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diff changeset
295
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296 if (ioalign)
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297 plan_flags &= ~FFTW_UNALIGNED;
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298 else
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299 plan_flags |= FFTW_UNALIGNED;
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300
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301 if (*cur_plan_p)
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302 fftw_destroy_plan (*cur_plan_p);
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303
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304 if (plan_destroys_in)
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305 {
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306 // Create matrix with the same size and 16-byte alignment as input
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307 OCTAVE_LOCAL_BUFFER (double, itmp, nn + 32);
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308 itmp = reinterpret_cast<double *>
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309 (((reinterpret_cast<ptrdiff_t>(itmp) + 15) & ~ 0xF) +
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310 ((reinterpret_cast<ptrdiff_t> (in)) & 0xF));
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311
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312 *cur_plan_p =
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313 fftw_plan_many_dft_r2c (rank, tmp, howmany, itmp,
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314 0, stride, dist, reinterpret_cast<fftw_complex *> (out),
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diff changeset
315 0, stride, dist, plan_flags);
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316 }
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317 else
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318 {
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319 *cur_plan_p =
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320 fftw_plan_many_dft_r2c (rank, tmp, howmany,
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321 (const_cast<double *> (in)),
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322 0, stride, dist, reinterpret_cast<fftw_complex *> (out),
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323 0, stride, dist, plan_flags);
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324 }
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325
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326 if (*cur_plan_p == 0)
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327 (*current_liboctave_error_handler) ("Error creating fftw plan");
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328 }
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329
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330 return *cur_plan_p;
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331 }
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332
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333 octave_fftw_planner::FftwMethod
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334 octave_fftw_planner::do_method (void)
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335 {
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336 return meth;
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337 }
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338
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339 octave_fftw_planner::FftwMethod
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340 octave_fftw_planner::do_method (FftwMethod _meth)
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341 {
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342 FftwMethod ret = meth;
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343 if (_meth == ESTIMATE || _meth == MEASURE
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344 || _meth == PATIENT || _meth == EXHAUSTIVE
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diff changeset
345 || _meth == HYBRID)
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346 {
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347 if (meth != _meth)
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348 {
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diff changeset
349 meth = _meth;
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350 if (rplan)
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351 fftw_destroy_plan (rplan);
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352 if (plan[0])
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353 fftw_destroy_plan (plan[0]);
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diff changeset
354 if (plan[1])
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355 fftw_destroy_plan (plan[1]);
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diff changeset
356 rplan = plan[0] = plan[1] = 0;
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357 }
9516
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358 }
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359 else
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360 ret = UNKNOWN;
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361 return ret;
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diff changeset
362 }
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diff changeset
363
fb933db0c517 convert fftw planner classes to singleton objects
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diff changeset
364 octave_float_fftw_planner *octave_float_fftw_planner::instance = 0;
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365
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366 octave_float_fftw_planner::octave_float_fftw_planner (void)
11509
fc35194006d6 oct-fftw.cc: more constructor tweaks
John W. Eaton <jwe@octave.org>
parents: 11501
diff changeset
367 : meth (ESTIMATE), rplan (0), rd (0), rs (0), rr (0), rh (0), rn (),
11501
331fcc41ca23 data member initialization fixes
John W. Eaton <jwe@octave.org>
parents: 10350
diff changeset
368 rsimd_align (false)
7789
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369 {
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370 plan[0] = plan[1] = 0;
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371 d[0] = d[1] = s[0] = s[1] = r[0] = r[1] = h[0] = h[1] = 0;
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372 simd_align[0] = simd_align[1] = false;
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373 inplace[0] = inplace[1] = false;
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374 n[0] = n[1] = dim_vector ();
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diff changeset
375
7789
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diff changeset
376 // If we have a system wide wisdom file, import it.
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diff changeset
377 fftwf_import_system_wisdom ();
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378 }
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379
9516
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diff changeset
380 bool
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diff changeset
381 octave_float_fftw_planner::instance_ok (void)
7789
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diff changeset
382 {
9516
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diff changeset
383 bool retval = true;
7789
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diff changeset
384
9516
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diff changeset
385 if (! instance)
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diff changeset
386 instance = new octave_float_fftw_planner ();
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diff changeset
387
fb933db0c517 convert fftw planner classes to singleton objects
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diff changeset
388 if (! instance)
7789
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diff changeset
389 {
9516
fb933db0c517 convert fftw planner classes to singleton objects
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diff changeset
390 (*current_liboctave_error_handler)
10314
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
391 ("unable to create octave_fftw_planner object!");
9516
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diff changeset
392
fb933db0c517 convert fftw planner classes to singleton objects
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diff changeset
393 retval = false;
7789
82be108cc558 First attempt at single precision tyeps
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diff changeset
394 }
9516
fb933db0c517 convert fftw planner classes to singleton objects
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diff changeset
395
fb933db0c517 convert fftw planner classes to singleton objects
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diff changeset
396 return retval;
7789
82be108cc558 First attempt at single precision tyeps
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diff changeset
397 }
82be108cc558 First attempt at single precision tyeps
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parents: 7017
diff changeset
398
82be108cc558 First attempt at single precision tyeps
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diff changeset
399 fftwf_plan
9516
fb933db0c517 convert fftw planner classes to singleton objects
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diff changeset
400 octave_float_fftw_planner::do_create_plan (int dir, const int rank,
10314
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
401 const dim_vector dims,
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
402 octave_idx_type howmany,
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
403 octave_idx_type stride,
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
404 octave_idx_type dist,
10314
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
405 const FloatComplex *in,
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
406 FloatComplex *out)
7789
82be108cc558 First attempt at single precision tyeps
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parents: 7017
diff changeset
407 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
408 int which = (dir == FFTW_FORWARD) ? 0 : 1;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
409 fftwf_plan *cur_plan_p = &plan[which];
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
410 bool create_new_plan = false;
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David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
411 bool ioalign = CHECK_SIMD_ALIGNMENT (in) && CHECK_SIMD_ALIGNMENT (out);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
412 bool ioinplace = (in == out);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
413
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
414 // Don't create a new plan if we have a non SIMD plan already but
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
415 // can do SIMD. This prevents endlessly recreating plans if we
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
416 // change the alignment.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
417
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
418 if (plan[which] == 0 || d[which] != dist || s[which] != stride
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
419 || r[which] != rank || h[which] != howmany
7789
82be108cc558 First attempt at single precision tyeps
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parents: 7017
diff changeset
420 || ioinplace != inplace[which]
82be108cc558 First attempt at single precision tyeps
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parents: 7017
diff changeset
421 || ((ioalign != simd_align[which]) ? !ioalign : false))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
422 create_new_plan = true;
82be108cc558 First attempt at single precision tyeps
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parents: 7017
diff changeset
423 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
424 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
425 // We still might not have the same shape of array.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
426
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
427 for (int i = 0; i < rank; i++)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
428 if (dims(i) != n[which](i))
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
429 {
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
430 create_new_plan = true;
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
431 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
432 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
433 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
434
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
435 if (create_new_plan)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
436 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
437 d[which] = dist;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
438 s[which] = stride;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
439 r[which] = rank;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
440 h[which] = howmany;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
441 simd_align[which] = ioalign;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
442 inplace[which] = ioinplace;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
443 n[which] = dims;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
444
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
445 // Note reversal of dimensions for column major storage in FFTW.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
446 octave_idx_type nn = 1;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
447 OCTAVE_LOCAL_BUFFER (int, tmp, rank);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
448
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
449 for (int i = 0, j = rank-1; i < rank; i++, j--)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
450 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
451 tmp[i] = dims(j);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
452 nn *= dims(j);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
453 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
454
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
455 int plan_flags = 0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
456 bool plan_destroys_in = true;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
457
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
458 switch (meth)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
459 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
460 case UNKNOWN:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
461 case ESTIMATE:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
462 plan_flags |= FFTW_ESTIMATE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
463 plan_destroys_in = false;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
464 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
465 case MEASURE:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
466 plan_flags |= FFTW_MEASURE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
467 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
468 case PATIENT:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
469 plan_flags |= FFTW_PATIENT;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
470 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
471 case EXHAUSTIVE:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
472 plan_flags |= FFTW_EXHAUSTIVE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
473 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
474 case HYBRID:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
475 if (nn < 8193)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
476 plan_flags |= FFTW_MEASURE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
477 else
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
478 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
479 plan_flags |= FFTW_ESTIMATE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
480 plan_destroys_in = false;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
481 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
482 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
483 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
484
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
485 if (ioalign)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
486 plan_flags &= ~FFTW_UNALIGNED;
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
487 else
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
488 plan_flags |= FFTW_UNALIGNED;
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
489
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
490 if (*cur_plan_p)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
491 fftwf_destroy_plan (*cur_plan_p);
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
492
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
493 if (plan_destroys_in)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
494 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
495 // Create matrix with the same size and 16-byte alignment as input
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
496 OCTAVE_LOCAL_BUFFER (FloatComplex, itmp, nn * howmany + 32);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
497 itmp = reinterpret_cast<FloatComplex *>
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
498 (((reinterpret_cast<ptrdiff_t>(itmp) + 15) & ~ 0xF) +
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
499 ((reinterpret_cast<ptrdiff_t> (in)) & 0xF));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
500
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
501 *cur_plan_p =
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
502 fftwf_plan_many_dft (rank, tmp, howmany,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
503 reinterpret_cast<fftwf_complex *> (itmp),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
504 0, stride, dist, reinterpret_cast<fftwf_complex *> (out),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
505 0, stride, dist, dir, plan_flags);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
506 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
507 else
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
508 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
509 *cur_plan_p =
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
510 fftwf_plan_many_dft (rank, tmp, howmany,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
511 reinterpret_cast<fftwf_complex *> (const_cast<FloatComplex *> (in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
512 0, stride, dist, reinterpret_cast<fftwf_complex *> (out),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
513 0, stride, dist, dir, plan_flags);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
514 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
515
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
516 if (*cur_plan_p == 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
517 (*current_liboctave_error_handler) ("Error creating fftw plan");
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
518 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
519
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
520 return *cur_plan_p;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
521 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
522
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
523 fftwf_plan
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
524 octave_float_fftw_planner::do_create_plan (const int rank,
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
525 const dim_vector dims,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
526 octave_idx_type howmany,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
527 octave_idx_type stride,
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
528 octave_idx_type dist,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
529 const float *in, FloatComplex *out)
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
530 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
531 fftwf_plan *cur_plan_p = &rplan;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
532 bool create_new_plan = false;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
533 bool ioalign = CHECK_SIMD_ALIGNMENT (in) && CHECK_SIMD_ALIGNMENT (out);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
534
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
535 // Don't create a new plan if we have a non SIMD plan already but
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
536 // can do SIMD. This prevents endlessly recreating plans if we
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
537 // change the alignment.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
538
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
539 if (rplan == 0 || rd != dist || rs != stride || rr != rank
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
540 || rh != howmany || ((ioalign != rsimd_align) ? !ioalign : false))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
541 create_new_plan = true;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
542 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
543 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
544 // We still might not have the same shape of array.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
545
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
546 for (int i = 0; i < rank; i++)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
547 if (dims(i) != rn(i))
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
548 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
549 create_new_plan = true;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
550 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
551 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
552 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
553
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
554 if (create_new_plan)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
555 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
556 rd = dist;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
557 rs = stride;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
558 rr = rank;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
559 rh = howmany;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
560 rsimd_align = ioalign;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
561 rn = dims;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
562
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
563 // Note reversal of dimensions for column major storage in FFTW.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
564 octave_idx_type nn = 1;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
565 OCTAVE_LOCAL_BUFFER (int, tmp, rank);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
566
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
567 for (int i = 0, j = rank-1; i < rank; i++, j--)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
568 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
569 tmp[i] = dims(j);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
570 nn *= dims(j);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
571 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
572
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
573 int plan_flags = 0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
574 bool plan_destroys_in = true;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
575
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
576 switch (meth)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
577 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
578 case UNKNOWN:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
579 case ESTIMATE:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
580 plan_flags |= FFTW_ESTIMATE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
581 plan_destroys_in = false;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
582 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
583 case MEASURE:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
584 plan_flags |= FFTW_MEASURE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
585 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
586 case PATIENT:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
587 plan_flags |= FFTW_PATIENT;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
588 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
589 case EXHAUSTIVE:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
590 plan_flags |= FFTW_EXHAUSTIVE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
591 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
592 case HYBRID:
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
593 if (nn < 8193)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
594 plan_flags |= FFTW_MEASURE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
595 else
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
596 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
597 plan_flags |= FFTW_ESTIMATE;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
598 plan_destroys_in = false;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
599 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
600 break;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
601 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
602
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
603 if (ioalign)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
604 plan_flags &= ~FFTW_UNALIGNED;
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
605 else
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
606 plan_flags |= FFTW_UNALIGNED;
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
607
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
608 if (*cur_plan_p)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
609 fftwf_destroy_plan (*cur_plan_p);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
610
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
611 if (plan_destroys_in)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
612 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
613 // Create matrix with the same size and 16-byte alignment as input
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
614 OCTAVE_LOCAL_BUFFER (float, itmp, nn + 32);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
615 itmp = reinterpret_cast<float *>
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
616 (((reinterpret_cast<ptrdiff_t>(itmp) + 15) & ~ 0xF) +
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
617 ((reinterpret_cast<ptrdiff_t> (in)) & 0xF));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
618
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
619 *cur_plan_p =
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
620 fftwf_plan_many_dft_r2c (rank, tmp, howmany, itmp,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
621 0, stride, dist, reinterpret_cast<fftwf_complex *> (out),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
622 0, stride, dist, plan_flags);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
623 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
624 else
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
625 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
626 *cur_plan_p =
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
627 fftwf_plan_many_dft_r2c (rank, tmp, howmany,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
628 (const_cast<float *> (in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
629 0, stride, dist, reinterpret_cast<fftwf_complex *> (out),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
630 0, stride, dist, plan_flags);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
631 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
632
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
633 if (*cur_plan_p == 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
634 (*current_liboctave_error_handler) ("Error creating fftw plan");
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
635 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
636
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
637 return *cur_plan_p;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
638 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
639
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
640 octave_float_fftw_planner::FftwMethod
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
641 octave_float_fftw_planner::do_method (void)
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
642 {
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
643 return meth;
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
644 }
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
645
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
646 octave_float_fftw_planner::FftwMethod
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
647 octave_float_fftw_planner::do_method (FftwMethod _meth)
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
648 {
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
649 FftwMethod ret = meth;
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
650 if (_meth == ESTIMATE || _meth == MEASURE
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
651 || _meth == PATIENT || _meth == EXHAUSTIVE
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
652 || _meth == HYBRID)
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
653 {
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
654 if (meth != _meth)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
655 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
656 meth = _meth;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
657 if (rplan)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
658 fftwf_destroy_plan (rplan);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
659 if (plan[0])
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
660 fftwf_destroy_plan (plan[0]);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
661 if (plan[1])
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
662 fftwf_destroy_plan (plan[1]);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
663 rplan = plan[0] = plan[1] = 0;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
664 }
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
665 }
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
666 else
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
667 ret = UNKNOWN;
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
668 return ret;
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
669 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
670
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
671 template <class T>
4775
88b638195bd1 [project @ 2004-02-16 19:57:06 by jwe]
jwe
parents: 4774
diff changeset
672 static inline void
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
673 convert_packcomplex_1d (T *out, size_t nr, size_t nc,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
674 octave_idx_type stride, octave_idx_type dist)
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
675 {
10142
829e69ec3110 make OCTAVE_QUIT a function
Jaroslav Hajek <highegg@gmail.com>
parents: 9523
diff changeset
676 octave_quit ();
4785
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
677
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
678 // Fill in the missing data.
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
679
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
680 for (size_t i = 0; i < nr; i++)
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
681 for (size_t j = nc/2+1; j < nc; j++)
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
682 out[j*stride + i*dist] = conj(out[(nc - j)*stride + i*dist]);
4785
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
683
10142
829e69ec3110 make OCTAVE_QUIT a function
Jaroslav Hajek <highegg@gmail.com>
parents: 9523
diff changeset
684 octave_quit ();
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
685 }
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
686
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
687 template <class T>
4775
88b638195bd1 [project @ 2004-02-16 19:57:06 by jwe]
jwe
parents: 4774
diff changeset
688 static inline void
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
689 convert_packcomplex_Nd (T *out, const dim_vector &dv)
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
690 {
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
691 size_t nc = dv(0);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
692 size_t nr = dv(1);
4808
a9ec0ce18568 [project @ 2004-03-02 17:36:28 by jwe]
jwe
parents: 4788
diff changeset
693 size_t np = (dv.length () > 2 ? dv.numel () / nc / nr : 1);
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
694 size_t nrp = nr * np;
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
695 T *ptr1, *ptr2;
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
696
10142
829e69ec3110 make OCTAVE_QUIT a function
Jaroslav Hajek <highegg@gmail.com>
parents: 9523
diff changeset
697 octave_quit ();
4785
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
698
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
699 // Create space for the missing elements.
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
700
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
701 for (size_t i = 0; i < nrp; i++)
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
702 {
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
703 ptr1 = out + i * (nc/2 + 1) + nrp*((nc-1)/2);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
704 ptr2 = out + i * nc;
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
705 for (size_t j = 0; j < nc/2+1; j++)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
706 *ptr2++ = *ptr1++;
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
707 }
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
708
10142
829e69ec3110 make OCTAVE_QUIT a function
Jaroslav Hajek <highegg@gmail.com>
parents: 9523
diff changeset
709 octave_quit ();
4785
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
710
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
711 // Fill in the missing data for the rank = 2 case directly for speed.
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
712
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
713 for (size_t i = 0; i < np; i++)
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
714 {
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
715 for (size_t j = 1; j < nr; j++)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
716 for (size_t k = nc/2+1; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
717 out[k + (j + i*nr)*nc] = conj(out[nc - k + ((i+1)*nr - j)*nc]);
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
718
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
719 for (size_t j = nc/2+1; j < nc; j++)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
720 out[j + i*nr*nc] = conj(out[(i*nr+1)*nc - j]);
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
721 }
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
722
10142
829e69ec3110 make OCTAVE_QUIT a function
Jaroslav Hajek <highegg@gmail.com>
parents: 9523
diff changeset
723 octave_quit ();
4785
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
724
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
725 // Now do the permutations needed for rank > 2 cases.
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
726
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
727 size_t jstart = dv(0) * dv(1);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
728 size_t kstep = dv(0);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
729 size_t nel = dv.numel ();
4785
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
730
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
731 for (int inner = 2; inner < dv.length (); inner++)
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
732 {
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
733 size_t jmax = jstart * dv(inner);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
734 for (size_t i = 0; i < nel; i+=jmax)
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
735 for (size_t j = jstart, jj = jmax-jstart; j < jj;
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
736 j+=jstart, jj-=jstart)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
737 for (size_t k = 0; k < jstart; k+= kstep)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
738 for (size_t l = nc/2+1; l < nc; l++)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
739 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
740 T tmp = out[i+ j + k + l];
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
741 out[i + j + k + l] = out[i + jj + k + l];
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
742 out[i + jj + k + l] = tmp;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
743 }
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
744 jstart = jmax;
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
745 }
4785
d3018a33c584 [project @ 2004-02-17 21:58:17 by jwe]
jwe
parents: 4784
diff changeset
746
10142
829e69ec3110 make OCTAVE_QUIT a function
Jaroslav Hajek <highegg@gmail.com>
parents: 9523
diff changeset
747 octave_quit ();
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
748 }
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
749
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
750 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
751 octave_fftw::fft (const double *in, Complex *out, size_t npts,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
752 size_t nsamples, octave_idx_type stride, octave_idx_type dist)
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
753 {
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
754 dist = (dist < 0 ? npts : dist);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
755
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10314
diff changeset
756 dim_vector dv (npts, 1);
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
757 fftw_plan plan = octave_fftw_planner::create_plan (1, dv, nsamples,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
758 stride, dist, in, out);
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
759
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
760 fftw_execute_dft_r2c (plan, (const_cast<double *>(in)),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
761 reinterpret_cast<fftw_complex *> (out));
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
762
4809
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
763 // Need to create other half of the transform.
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
764
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
765 convert_packcomplex_1d (out, nsamples, npts, stride, dist);
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
766
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
767 return 0;
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
768 }
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
769
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
770 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
771 octave_fftw::fft (const Complex *in, Complex *out, size_t npts,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
772 size_t nsamples, octave_idx_type stride, octave_idx_type dist)
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
773 {
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
774 dist = (dist < 0 ? npts : dist);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
775
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10314
diff changeset
776 dim_vector dv (npts, 1);
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
777 fftw_plan plan = octave_fftw_planner::create_plan (FFTW_FORWARD, 1, dv,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
778 nsamples, stride,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
779 dist, in, out);
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
780
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
781 fftw_execute_dft (plan,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
782 reinterpret_cast<fftw_complex *> (const_cast<Complex *>(in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
783 reinterpret_cast<fftw_complex *> (out));
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
784
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
785 return 0;
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
786 }
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
787
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
788 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
789 octave_fftw::ifft (const Complex *in, Complex *out, size_t npts,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
790 size_t nsamples, octave_idx_type stride, octave_idx_type dist)
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
791 {
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
792 dist = (dist < 0 ? npts : dist);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
793
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10314
diff changeset
794 dim_vector dv (npts, 1);
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
795 fftw_plan plan = octave_fftw_planner::create_plan (FFTW_BACKWARD, 1, dv,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
796 nsamples, stride,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
797 dist, in, out);
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
798
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
799 fftw_execute_dft (plan,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
800 reinterpret_cast<fftw_complex *> (const_cast<Complex *>(in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
801 reinterpret_cast<fftw_complex *> (out));
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
802
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
803 const Complex scale = npts;
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
804 for (size_t j = 0; j < nsamples; j++)
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
805 for (size_t i = 0; i < npts; i++)
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
806 out[i*stride + j*dist] /= scale;
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
807
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
808 return 0;
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
809 }
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
810
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
811 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
812 octave_fftw::fftNd (const double *in, Complex *out, const int rank,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
813 const dim_vector &dv)
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
814 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5044
diff changeset
815 octave_idx_type dist = 1;
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
816 for (int i = 0; i < rank; i++)
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
817 dist *= dv(i);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
818
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
819 // Fool with the position of the start of the output matrix, so that
4809
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
820 // creating other half of the matrix won't cause cache problems.
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
821
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
822 octave_idx_type offset = (dv.numel () / dv(0)) * ((dv(0) - 1) / 2);
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
823
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
824 fftw_plan plan = octave_fftw_planner::create_plan (rank, dv, 1, 1, dist,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
825 in, out + offset);
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
826
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
827 fftw_execute_dft_r2c (plan, (const_cast<double *>(in)),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
828 reinterpret_cast<fftw_complex *> (out+ offset));
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
829
4809
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
830 // Need to create other half of the transform.
b60be7678bdc [project @ 2004-03-02 17:40:08 by jwe]
jwe
parents: 4808
diff changeset
831
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
832 convert_packcomplex_Nd (out, dv);
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
833
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
834 return 0;
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
835 }
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
836
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
837 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
838 octave_fftw::fftNd (const Complex *in, Complex *out, const int rank,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
839 const dim_vector &dv)
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
840 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5044
diff changeset
841 octave_idx_type dist = 1;
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
842 for (int i = 0; i < rank; i++)
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
843 dist *= dv(i);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
844
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
845 fftw_plan plan = octave_fftw_planner::create_plan (FFTW_FORWARD, rank,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
846 dv, 1, 1, dist, in, out);
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
847
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
848 fftw_execute_dft (plan,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
849 reinterpret_cast<fftw_complex *> (const_cast<Complex *>(in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
850 reinterpret_cast<fftw_complex *> (out));
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
851
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
852 return 0;
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
853 }
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
854
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
855 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
856 octave_fftw::ifftNd (const Complex *in, Complex *out, const int rank,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
857 const dim_vector &dv)
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
858 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5044
diff changeset
859 octave_idx_type dist = 1;
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
860 for (int i = 0; i < rank; i++)
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
861 dist *= dv(i);
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
862
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
863 fftw_plan plan = octave_fftw_planner::create_plan (FFTW_BACKWARD, rank,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
864 dv, 1, 1, dist, in, out);
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
865
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
866 fftw_execute_dft (plan,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
867 reinterpret_cast<fftw_complex *> (const_cast<Complex *>(in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
868 reinterpret_cast<fftw_complex *> (out));
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
869
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
870 const size_t npts = dv.numel ();
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
871 const Complex scale = npts;
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
872 for (size_t i = 0; i < npts; i++)
4773
ccfbd6047a54 [project @ 2004-02-16 19:02:32 by jwe]
jwe
parents: 3874
diff changeset
873 out[i] /= scale;
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
874
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
875 return 0;
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
876 }
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
877
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
878 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
879 octave_fftw::fft (const float *in, FloatComplex *out, size_t npts,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
880 size_t nsamples, octave_idx_type stride, octave_idx_type dist)
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
881 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
882 dist = (dist < 0 ? npts : dist);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
883
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10314
diff changeset
884 dim_vector dv (npts, 1);
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
885 fftwf_plan plan = octave_float_fftw_planner::create_plan (1, dv, nsamples,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
886 stride, dist,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
887 in, out);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
888
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
889 fftwf_execute_dft_r2c (plan, (const_cast<float *>(in)),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
890 reinterpret_cast<fftwf_complex *> (out));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
891
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
892 // Need to create other half of the transform.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
893
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
894 convert_packcomplex_1d (out, nsamples, npts, stride, dist);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
895
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
896 return 0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
897 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
898
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
899 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
900 octave_fftw::fft (const FloatComplex *in, FloatComplex *out, size_t npts,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
901 size_t nsamples, octave_idx_type stride, octave_idx_type dist)
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
902 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
903 dist = (dist < 0 ? npts : dist);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
904
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10314
diff changeset
905 dim_vector dv (npts, 1);
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
906 fftwf_plan plan = octave_float_fftw_planner::create_plan (FFTW_FORWARD, 1,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
907 dv, nsamples,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
908 stride, dist,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
909 in, out);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
910
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
911 fftwf_execute_dft (plan,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
912 reinterpret_cast<fftwf_complex *> (const_cast<FloatComplex *>(in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
913 reinterpret_cast<fftwf_complex *> (out));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
914
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
915 return 0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
916 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
917
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
918 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
919 octave_fftw::ifft (const FloatComplex *in, FloatComplex *out, size_t npts,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
920 size_t nsamples, octave_idx_type stride, octave_idx_type dist)
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
921 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
922 dist = (dist < 0 ? npts : dist);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
923
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10314
diff changeset
924 dim_vector dv (npts, 1);
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
925 fftwf_plan plan = octave_float_fftw_planner::create_plan (FFTW_BACKWARD, 1,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
926 dv, nsamples,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
927 stride, dist,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
928 in, out);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
929
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
930 fftwf_execute_dft (plan,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
931 reinterpret_cast<fftwf_complex *> (const_cast<FloatComplex *>(in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
932 reinterpret_cast<fftwf_complex *> (out));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
933
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
934 const FloatComplex scale = npts;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
935 for (size_t j = 0; j < nsamples; j++)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
936 for (size_t i = 0; i < npts; i++)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
937 out[i*stride + j*dist] /= scale;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
938
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
939 return 0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
940 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
941
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
942 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
943 octave_fftw::fftNd (const float *in, FloatComplex *out, const int rank,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
944 const dim_vector &dv)
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
945 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
946 octave_idx_type dist = 1;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
947 for (int i = 0; i < rank; i++)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
948 dist *= dv(i);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
949
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
950 // Fool with the position of the start of the output matrix, so that
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
951 // creating other half of the matrix won't cause cache problems.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
952
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
953 octave_idx_type offset = (dv.numel () / dv(0)) * ((dv(0) - 1) / 2);
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
954
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
955 fftwf_plan plan = octave_float_fftw_planner::create_plan (rank, dv, 1, 1,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
956 dist, in,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
957 out + offset);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
958
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
959 fftwf_execute_dft_r2c (plan, (const_cast<float *>(in)),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
960 reinterpret_cast<fftwf_complex *> (out+ offset));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
961
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
962 // Need to create other half of the transform.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
963
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
964 convert_packcomplex_Nd (out, dv);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
965
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
966 return 0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
967 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
968
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
969 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
970 octave_fftw::fftNd (const FloatComplex *in, FloatComplex *out, const int rank,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
971 const dim_vector &dv)
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
972 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
973 octave_idx_type dist = 1;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
974 for (int i = 0; i < rank; i++)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
975 dist *= dv(i);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
976
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
977 fftwf_plan plan = octave_float_fftw_planner::create_plan (FFTW_FORWARD,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
978 rank, dv, 1, 1,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
979 dist, in, out);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
980
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
981 fftwf_execute_dft (plan,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
982 reinterpret_cast<fftwf_complex *> (const_cast<FloatComplex *>(in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
983 reinterpret_cast<fftwf_complex *> (out));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
984
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
985 return 0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
986 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
987
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
988 int
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
989 octave_fftw::ifftNd (const FloatComplex *in, FloatComplex *out, const int rank,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
990 const dim_vector &dv)
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
991 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
992 octave_idx_type dist = 1;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
993 for (int i = 0; i < rank; i++)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
994 dist *= dv(i);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
995
9516
fb933db0c517 convert fftw planner classes to singleton objects
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
996 fftwf_plan plan = octave_float_fftw_planner::create_plan (FFTW_BACKWARD,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
997 rank, dv, 1, 1,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
998 dist, in, out);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
999
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
1000 fftwf_execute_dft (plan,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
1001 reinterpret_cast<fftwf_complex *> (const_cast<FloatComplex *>(in)),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
1002 reinterpret_cast<fftwf_complex *> (out));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
1003
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
1004 const size_t npts = dv.numel ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
1005 const FloatComplex scale = npts;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
1006 for (size_t i = 0; i < npts; i++)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
1007 out[i] /= scale;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
1008
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
1009 return 0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
1010 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
1011
3828
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
jwe
parents:
diff changeset
1012 #endif