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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021. In all .txi and .texi files except gpl.txi and gpl.texi in the doc/liboctave and doc/interpreter directories, change the copyright to "Octave Project Developers", the same as used for other source files. Update copyright notices for 2022 (not done since 2019). For gpl.txi and gpl.texi, change the copyright notice to be "Free Software Foundation, Inc." and leave the date at 2007 only because this file only contains the text of the GPL, not anything created by the Octave Project Developers. Add Paul Thomas to contributors.in.
author John W. Eaton <jwe@octave.org>
date Tue, 28 Dec 2021 18:22:40 -0500
parents abf2e77cca42
children e88a07dec498
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1994-2022 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include <cassert>
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31
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32 #include <algorithm>
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33
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34 #include "Array.h"
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35 #include "CMatrix.h"
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36 #include "MArray.h"
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37 #include "dMatrix.h"
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38 #include "dRowVector.h"
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39 #include "fCMatrix.h"
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40 #include "fMatrix.h"
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41 #include "fRowVector.h"
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42 #include "lo-lapack-proto.h"
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43 #include "oct-locbuf.h"
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44 #include "qrp.h"
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45
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46 namespace octave
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47 {
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48 namespace math
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49 {
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50 // Specialization.
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51
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52 template <>
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53 OCTAVE_API
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54 void
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55 qrp<Matrix>::init (const Matrix& a, type qr_type)
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56 {
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57 assert (qr_type != qr<Matrix>::raw);
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58
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59 F77_INT m = to_f77_int (a.rows ());
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60 F77_INT n = to_f77_int (a.cols ());
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61
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62 F77_INT min_mn = (m < n ? m : n);
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63 OCTAVE_LOCAL_BUFFER (double, tau, min_mn);
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64
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65 F77_INT info = 0;
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66
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67 Matrix afact = a;
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68 if (m > n && qr_type == qr<Matrix>::std)
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69 afact.resize (m, m);
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70
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71 MArray<F77_INT> jpvt (dim_vector (n, 1), 0);
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72
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73 if (m > 0)
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74 {
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75 // workspace query.
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76 double rlwork;
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77 F77_XFCN (dgeqp3, DGEQP3, (m, n, afact.fortran_vec (),
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78 m, jpvt.fortran_vec (), tau,
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79 &rlwork, -1, info));
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80
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81 // allocate buffer and do the job.
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82 F77_INT lwork = static_cast<F77_INT> (rlwork);
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83 lwork = std::max (lwork, static_cast<F77_INT> (1));
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84 OCTAVE_LOCAL_BUFFER (double, work, lwork);
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85
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86 F77_XFCN (dgeqp3, DGEQP3, (m, n, afact.fortran_vec (),
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87 m, jpvt.fortran_vec (), tau,
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88 work, lwork, info));
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89 }
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90 else
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91 {
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92 for (F77_INT i = 0; i < n; i++)
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93 jpvt(i) = i+1;
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94 }
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95
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96 // Form Permutation matrix (if economy is requested, return the
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97 // indices only!)
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98
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99 jpvt -= static_cast<F77_INT> (1);
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100 m_p = PermMatrix (jpvt, true);
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101
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102 form (n, afact, tau, qr_type);
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103 }
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104
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105 template <>
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106 OCTAVE_API
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107 qrp<Matrix>::qrp (const Matrix& a, type qr_type)
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108 : qr<Matrix> (), m_p ()
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109 {
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110 init (a, qr_type);
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111 }
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112
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113 template <>
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114 OCTAVE_API
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115 RowVector
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116 qrp<Matrix>::Pvec (void) const
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117 {
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118 Array<double> pa (m_p.col_perm_vec ());
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119 RowVector pv (MArray<double> (pa) + 1.0);
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120 return pv;
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121 }
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122
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123 template <>
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124 OCTAVE_API
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125 void
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126 qrp<FloatMatrix>::init (const FloatMatrix& a, type qr_type)
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127 {
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128 assert (qr_type != qr<FloatMatrix>::raw);
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129
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130 F77_INT m = to_f77_int (a.rows ());
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131 F77_INT n = to_f77_int (a.cols ());
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132
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133 F77_INT min_mn = (m < n ? m : n);
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134 OCTAVE_LOCAL_BUFFER (float, tau, min_mn);
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135
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136 F77_INT info = 0;
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137
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138 FloatMatrix afact = a;
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139 if (m > n && qr_type == qr<FloatMatrix>::std)
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140 afact.resize (m, m);
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141
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142 MArray<F77_INT> jpvt (dim_vector (n, 1), 0);
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143
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144 if (m > 0)
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145 {
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146 // workspace query.
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147 float rlwork;
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148 F77_XFCN (sgeqp3, SGEQP3, (m, n, afact.fortran_vec (),
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149 m, jpvt.fortran_vec (), tau,
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150 &rlwork, -1, info));
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151
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152 // allocate buffer and do the job.
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153 F77_INT lwork = static_cast<F77_INT> (rlwork);
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154 lwork = std::max (lwork, static_cast<F77_INT> (1));
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155 OCTAVE_LOCAL_BUFFER (float, work, lwork);
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156
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157 F77_XFCN (sgeqp3, SGEQP3, (m, n, afact.fortran_vec (),
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158 m, jpvt.fortran_vec (), tau,
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159 work, lwork, info));
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160 }
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161 else
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162 {
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163 for (F77_INT i = 0; i < n; i++)
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164 jpvt(i) = i+1;
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165 }
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166
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167 // Form Permutation matrix (if economy is requested, return the
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168 // indices only!)
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169
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170 jpvt -= static_cast<F77_INT> (1);
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171 m_p = PermMatrix (jpvt, true);
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172
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173 form (n, afact, tau, qr_type);
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174 }
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175
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176 template <>
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177 OCTAVE_API
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178 qrp<FloatMatrix>::qrp (const FloatMatrix& a, type qr_type)
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179 : qr<FloatMatrix> (), m_p ()
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180 {
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181 init (a, qr_type);
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182 }
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183
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184 template <>
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185 OCTAVE_API
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186 FloatRowVector
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187 qrp<FloatMatrix>::Pvec (void) const
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188 {
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189 Array<float> pa (m_p.col_perm_vec ());
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190 FloatRowVector pv (MArray<float> (pa) + 1.0f);
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191 return pv;
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192 }
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193
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194 template <>
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195 OCTAVE_API
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196 void
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197 qrp<ComplexMatrix>::init (const ComplexMatrix& a, type qr_type)
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198 {
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199 assert (qr_type != qr<ComplexMatrix>::raw);
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200
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201 F77_INT m = to_f77_int (a.rows ());
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202 F77_INT n = to_f77_int (a.cols ());
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203
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204 F77_INT min_mn = (m < n ? m : n);
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205 OCTAVE_LOCAL_BUFFER (Complex, tau, min_mn);
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206
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207 F77_INT info = 0;
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208
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209 ComplexMatrix afact = a;
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210 if (m > n && qr_type == qr<ComplexMatrix>::std)
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211 afact.resize (m, m);
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diff changeset
212
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213 MArray<F77_INT> jpvt (dim_vector (n, 1), 0);
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214
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215 if (m > 0)
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216 {
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217 OCTAVE_LOCAL_BUFFER (double, rwork, 2*n);
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218
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219 // workspace query.
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diff changeset
220 Complex clwork;
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221 F77_XFCN (zgeqp3, ZGEQP3, (m, n,
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222 F77_DBLE_CMPLX_ARG (afact.fortran_vec ()),
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223 m, jpvt.fortran_vec (),
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224 F77_DBLE_CMPLX_ARG (tau),
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225 F77_DBLE_CMPLX_ARG (&clwork),
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diff changeset
226 -1, rwork, info));
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227
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228 // allocate buffer and do the job.
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229 F77_INT lwork = static_cast<F77_INT> (clwork.real ());
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230 lwork = std::max (lwork, static_cast<F77_INT> (1));
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diff changeset
231 OCTAVE_LOCAL_BUFFER (Complex, work, lwork);
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232
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233 F77_XFCN (zgeqp3, ZGEQP3, (m, n,
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234 F77_DBLE_CMPLX_ARG (afact.fortran_vec ()),
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235 m, jpvt.fortran_vec (),
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236 F77_DBLE_CMPLX_ARG (tau),
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237 F77_DBLE_CMPLX_ARG (work),
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238 lwork, rwork, info));
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diff changeset
239 }
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240 else
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241 {
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242 for (F77_INT i = 0; i < n; i++)
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243 jpvt(i) = i+1;
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244 }
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245
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246 // Form Permutation matrix (if economy is requested, return the
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247 // indices only!)
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248
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249 jpvt -= static_cast<F77_INT> (1);
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diff changeset
250 m_p = PermMatrix (jpvt, true);
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251
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252 form (n, afact, tau, qr_type);
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253 }
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254
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255 template <>
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256 OCTAVE_API
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257 qrp<ComplexMatrix>::qrp (const ComplexMatrix& a, type qr_type)
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258 : qr<ComplexMatrix> (), m_p ()
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259 {
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260 init (a, qr_type);
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261 }
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262
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263 template <>
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264 OCTAVE_API
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265 RowVector
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266 qrp<ComplexMatrix>::Pvec (void) const
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267 {
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268 Array<double> pa (m_p.col_perm_vec ());
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269 RowVector pv (MArray<double> (pa) + 1.0);
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270 return pv;
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271 }
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272
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273 template <>
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274 OCTAVE_API
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275 void
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276 qrp<FloatComplexMatrix>::init (const FloatComplexMatrix& a, type qr_type)
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277 {
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278 assert (qr_type != qr<FloatComplexMatrix>::raw);
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279
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280 F77_INT m = to_f77_int (a.rows ());
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281 F77_INT n = to_f77_int (a.cols ());
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282
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283 F77_INT min_mn = (m < n ? m : n);
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284 OCTAVE_LOCAL_BUFFER (FloatComplex, tau, min_mn);
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285
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286 F77_INT info = 0;
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287
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288 FloatComplexMatrix afact = a;
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289 if (m > n && qr_type == qr<FloatComplexMatrix>::std)
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290 afact.resize (m, m);
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291
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292 MArray<F77_INT> jpvt (dim_vector (n, 1), 0);
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293
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294 if (m > 0)
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295 {
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296 OCTAVE_LOCAL_BUFFER (float, rwork, 2*n);
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297
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298 // workspace query.
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299 FloatComplex clwork;
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300 F77_XFCN (cgeqp3, CGEQP3, (m, n,
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301 F77_CMPLX_ARG (afact.fortran_vec ()),
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302 m, jpvt.fortran_vec (),
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303 F77_CMPLX_ARG (tau),
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304 F77_CMPLX_ARG (&clwork),
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305 -1, rwork, info));
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306
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307 // allocate buffer and do the job.
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308 F77_INT lwork = static_cast<F77_INT> (clwork.real ());
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309 lwork = std::max (lwork, static_cast<F77_INT> (1));
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310 OCTAVE_LOCAL_BUFFER (FloatComplex, work, lwork);
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311
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312 F77_XFCN (cgeqp3, CGEQP3, (m, n,
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313 F77_CMPLX_ARG (afact.fortran_vec ()),
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314 m, jpvt.fortran_vec (),
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315 F77_CMPLX_ARG (tau),
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316 F77_CMPLX_ARG (work),
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317 lwork, rwork, info));
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318 }
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319 else
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320 {
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321 for (F77_INT i = 0; i < n; i++)
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322 jpvt(i) = i+1;
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323 }
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324
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325 // Form Permutation matrix (if economy is requested, return the
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326 // indices only!)
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327
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328 jpvt -= static_cast<F77_INT> (1);
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329 m_p = PermMatrix (jpvt, true);
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330
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331 form (n, afact, tau, qr_type);
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332 }
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333
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334 template <>
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335 OCTAVE_API
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336 qrp<FloatComplexMatrix>::qrp (const FloatComplexMatrix& a, type qr_type)
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337 : qr<FloatComplexMatrix> (), m_p ()
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338 {
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339 init (a, qr_type);
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340 }
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341
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342 template <>
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343 OCTAVE_API
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344 FloatRowVector
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345 qrp<FloatComplexMatrix>::Pvec (void) const
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346 {
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347 Array<float> pa (m_p.col_perm_vec ());
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348 FloatRowVector pv (MArray<float> (pa) + 1.0f);
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349 return pv;
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350 }
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351 }
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352 }