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annotate liboctave/operators/Sparse-perm-op-defs.h @ 22327:d0562b3159c7

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move more classes inside octave namespace * ov-complex.cc, quit.h, lo-array-errwarn.h, lo-array-errwarn.cc, lo-array-gripes.cc: Move classes inside octave namespace. * NEWS, file-editor-tab.cc, Cell.cc, __qp__.cc, cellfun.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, error.cc, error.h, errwarn.cc, errwarn.h, file-io.cc, gcd.cc, graphics.cc, graphics.in.h, gripes.cc, gripes.h, input.cc, interpreter.cc, interpreter.h, inv.cc, jit-typeinfo.cc, load-path.cc, ls-mat-ascii.cc, ls-mat5.cc, lsode.cc, mex.cc, oct-handle.h, oct-map.cc, oct-stream.cc, quad.cc, rand.cc, sparse-xdiv.cc, sparse-xpow.cc, sparse.cc, sub2ind.cc, toplev.cc, utils.cc, variables.cc, xdiv.cc, xpow.cc, __eigs__.cc, __init_gnuplot__.cc, ov-base-diag.cc, ov-base-mat.cc, ov-base-scalar.cc, ov-base-sparse.cc, ov-base.cc, ov-class.cc, ov-classdef.cc, ov-complex.h, ov-complex.cc, ov-cx-mat.cc, ov-cx-sparse.cc, ov-fcn-handle.cc, ov-float.cc, ov-float.h, ov-flt-complex.h, ov-flt-cx-mat.cc, ov-flt-re-mat.cc, ov-java.cc, ov-oncleanup.cc, ov-perm.cc, ov-range.cc, ov-re-diag.cc, ov-re-mat.cc, ov-re-sparse.cc, ov-scalar.cc, ov-scalar.h, ov-str-mat.cc, ov.cc, op-cs-cs.cc, op-fcs-fcs.cc, op-fs-fs.cc, op-int.h, op-s-s.cc, ops.h, oct-parse.in.yy, pt-assign.cc, pt-eval.cc, pt-idx.cc, pt.cc, Array-util.cc, Array.cc, CColVector.cc, CDiagMatrix.cc, CMatrix.cc, CNDArray.cc, CRowVector.cc, CSparse.cc, DiagArray2.cc, MDiagArray2.cc, MSparse.cc, PermMatrix.cc, Range.cc, Sparse.cc, dColVector.cc, dDiagMatrix.cc, dMatrix.cc, dNDArray.cc, dRowVector.cc, dSparse.cc, fCColVector.cc, fCDiagMatrix.cc, fCMatrix.cc, fCNDArray.cc, fCRowVector.cc, fColVector.cc, fDiagMatrix.cc, fMatrix.cc, fNDArray.cc, fRowVector.cc, idx-vector.cc, quit.cc, quit.h, gepbalance.cc, Sparse-diag-op-defs.h, Sparse-op-defs.h, Sparse-perm-op-defs.h, mx-inlines.cc, mx-op-defs.h, cmd-edit.cc, lo-array-errwarn.cc, lo-array-errwarn.h, lo-array-gripes.cc, lo-array-gripes.h, oct-binmap.h: Update to use namespace.
author John W. Eaton <jwe@octave.org>
date Wed, 17 Aug 2016 03:41:42 -0400
parents bac0d6f07a3e
children 4caa7b28d183
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1 /* -*- C++ -*-
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2
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3 Copyright (C) 2009-2016 Jason Riedy
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4
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5 This file is part of Octave.
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6
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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
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10 option) any later version.
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11
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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
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21 */
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22
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23 #if ! defined (octave_Sparse_perm_op_defs_h)
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24 #define octave_Sparse_perm_op_defs_h 1
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25
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26 #include "octave-config.h"
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27
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28 // Matrix multiplication
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29
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30 template <typename SM>
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31 SM octinternal_do_mul_colpm_sm (const octave_idx_type *pcol, const SM& a)
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32 // Relabel the rows according to pcol.
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33 {
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34 const octave_idx_type nr = a.rows ();
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35 const octave_idx_type nc = a.cols ();
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36 const octave_idx_type nent = a.nnz ();
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37 SM r (nr, nc, nent);
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38
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39 octave_sort<octave_idx_type> sort;
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40
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41 for (octave_idx_type j = 0; j <= nc; ++j)
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42 r.xcidx (j) = a.cidx (j);
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43
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44 for (octave_idx_type j = 0; j < nc; j++)
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45 {
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46 octave_quit ();
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47
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48 OCTAVE_LOCAL_BUFFER (octave_idx_type, sidx, r.xcidx (j+1) - r.xcidx (j));
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49 for (octave_idx_type i = r.xcidx (j), ii = 0; i < r.xcidx (j+1); i++)
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50 {
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51 sidx[ii++]=i;
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52 r.xridx (i) = pcol[a.ridx (i)];
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53 }
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54 sort.sort (r.xridx () + r.xcidx (j), sidx, r.xcidx (j+1) - r.xcidx (j));
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55 for (octave_idx_type i = r.xcidx (j), ii = 0; i < r.xcidx (j+1); i++)
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56 r.xdata (i) = a.data (sidx[ii++]);
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57 }
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58
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59 return r;
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60 }
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61
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62 template <typename SM>
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63 SM octinternal_do_mul_pm_sm (const PermMatrix& p, const SM& a)
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64 {
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65 const octave_idx_type nr = a.rows ();
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66 if (p.cols () != nr)
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67 octave::err_nonconformant ("operator *", p.rows (), p.cols (), a.rows (), a.cols ());
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68
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69 return octinternal_do_mul_colpm_sm (p.col_perm_vec ().data (), a);
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70 }
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71
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72 template <typename SM>
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73 SM octinternal_do_mul_sm_rowpm (const SM& a, const octave_idx_type *prow)
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74 // For a row permutation, iterate across the source a and stuff the
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75 // results into the correct destination column in r.
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76 {
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77 const octave_idx_type nr = a.rows ();
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78 const octave_idx_type nc = a.cols ();
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79 const octave_idx_type nent = a.nnz ();
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80 SM r (nr, nc, nent);
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81
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82 for (octave_idx_type j_src = 0; j_src < nc; ++j_src)
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83 r.xcidx (prow[j_src]) = a.cidx (j_src+1) - a.cidx (j_src);
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84 octave_idx_type k = 0;
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85 for (octave_idx_type j = 0; j < nc; ++j)
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86 {
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87 const octave_idx_type tmp = r.xcidx (j);
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88 r.xcidx (j) = k;
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89 k += tmp;
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90 }
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91 r.xcidx (nc) = nent;
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92
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93 octave_idx_type k_src = 0;
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94 for (octave_idx_type j_src = 0; j_src < nc; ++j_src)
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95 {
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96 octave_quit ();
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97 const octave_idx_type j = prow[j_src];
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98 const octave_idx_type kend_src = a.cidx (j_src + 1);
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99 for (k = r.xcidx (j); k_src < kend_src; ++k, ++k_src)
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100 {
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101 r.xridx (k) = a.ridx (k_src);
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102 r.xdata (k) = a.data (k_src);
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103 }
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104 }
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105 assert (k_src == nent);
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106
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107 return r;
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108 }
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109
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110 template <typename SM>
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111 SM octinternal_do_mul_sm_colpm (const SM& a, const octave_idx_type *pcol)
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112 // For a column permutation, iterate across the destination r and pull
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113 // data from the correct column of a.
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114 {
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115 const octave_idx_type nr = a.rows ();
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116 const octave_idx_type nc = a.cols ();
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117 const octave_idx_type nent = a.nnz ();
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118 SM r (nr, nc, nent);
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119
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120 for (octave_idx_type j = 0; j < nc; ++j)
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121 {
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122 const octave_idx_type j_src = pcol[j];
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123 r.xcidx (j+1) = r.xcidx (j) + (a.cidx (j_src+1) - a.cidx (j_src));
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124 }
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125 assert (r.xcidx (nc) == nent);
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126
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127 octave_idx_type k = 0;
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128 for (octave_idx_type j = 0; j < nc; ++j)
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129 {
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130 octave_quit ();
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131 const octave_idx_type j_src = pcol[j];
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132 octave_idx_type k_src;
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133 const octave_idx_type kend_src = a.cidx (j_src + 1);
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134 for (k_src = a.cidx (j_src); k_src < kend_src; ++k_src, ++k)
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135 {
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136 r.xridx (k) = a.ridx (k_src);
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137 r.xdata (k) = a.data (k_src);
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138 }
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139 }
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140 assert (k == nent);
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141
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142 return r;
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143 }
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144
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145 template <typename SM>
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146 SM octinternal_do_mul_sm_pm (const SM& a, const PermMatrix& p)
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147 {
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148 const octave_idx_type nc = a.cols ();
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149 if (p.rows () != nc)
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150 octave::err_nonconformant ("operator *", a.rows (), a.cols (), p.rows (), p.cols ());
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151
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152 return octinternal_do_mul_sm_colpm (a, p.col_perm_vec ().data ());
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153 }
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154
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155 #endif