Mercurial > octave-dspies
annotate liboctave/floatQR.cc @ 8562:a6edd5c23cb5
use replacement methods if qrupdate is not available
author | Jaroslav Hajek <highegg@gmail.com> |
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date | Thu, 22 Jan 2009 11:10:47 +0100 |
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1 /* |
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2 |
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3 Copyright (C) 1994, 1995, 1996, 1997, 2002, 2003, 2004, 2005, 2007 |
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4 John W. Eaton |
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5 Copyright (C) 2008, 2009 Jaroslav Hajek |
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6 |
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7 This file is part of Octave. |
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8 |
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9 Octave is free software; you can redistribute it and/or modify it |
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10 under the terms of the GNU General Public License as published by the |
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11 Free Software Foundation; either version 3 of the License, or (at your |
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12 option) any later version. |
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13 |
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14 Octave is distributed in the hope that it will be useful, but WITHOUT |
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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17 for more details. |
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18 |
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19 You should have received a copy of the GNU General Public License |
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20 along with Octave; see the file COPYING. If not, see |
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21 <http://www.gnu.org/licenses/>. |
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22 |
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23 */ |
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24 |
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25 #ifdef HAVE_CONFIG_H |
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26 #include <config.h> |
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27 #endif |
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28 |
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29 #include "floatQR.h" |
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30 #include "f77-fcn.h" |
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31 #include "lo-error.h" |
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32 #include "Range.h" |
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33 #include "idx-vector.h" |
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34 #include "oct-locbuf.h" |
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35 |
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36 extern "C" |
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37 { |
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38 F77_RET_T |
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39 F77_FUNC (sgeqrf, SGEQRF) (const octave_idx_type&, const octave_idx_type&, float*, const octave_idx_type&, |
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40 float*, float*, const octave_idx_type&, octave_idx_type&); |
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41 |
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42 F77_RET_T |
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43 F77_FUNC (sorgqr, SORGQR) (const octave_idx_type&, const octave_idx_type&, const octave_idx_type&, float*, |
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44 const octave_idx_type&, float*, float*, const octave_idx_type&, octave_idx_type&); |
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45 |
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46 #ifdef HAVE_QRUPDATE |
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47 |
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48 F77_RET_T |
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49 F77_FUNC (sqr1up, SQR1UP) (const octave_idx_type&, const octave_idx_type&, const octave_idx_type&, |
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50 float*, const octave_idx_type&, float*, const octave_idx_type&, |
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51 float*, float*, float*); |
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52 |
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53 F77_RET_T |
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54 F77_FUNC (sqrinc, SQRINC) (const octave_idx_type&, const octave_idx_type&, const octave_idx_type&, |
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55 float*, const octave_idx_type&, float*, const octave_idx_type&, |
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56 const octave_idx_type&, const float*, float*); |
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57 |
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58 F77_RET_T |
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59 F77_FUNC (sqrdec, SQRDEC) (const octave_idx_type&, const octave_idx_type&, const octave_idx_type&, |
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60 float*, const octave_idx_type&, float*, const octave_idx_type&, |
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61 const octave_idx_type&, float*); |
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62 |
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63 F77_RET_T |
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64 F77_FUNC (sqrinr, SQRINR) (const octave_idx_type&, const octave_idx_type&, |
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65 float*, const octave_idx_type&, float*, const octave_idx_type&, |
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66 const octave_idx_type&, const float*, float*); |
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67 |
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68 F77_RET_T |
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69 F77_FUNC (sqrder, SQRDER) (const octave_idx_type&, const octave_idx_type&, |
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70 float*, const octave_idx_type&, float*, const octave_idx_type&, |
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71 const octave_idx_type&, float*); |
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72 |
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73 F77_RET_T |
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74 F77_FUNC (sqrshc, SQRSHC) (const octave_idx_type&, const octave_idx_type&, const octave_idx_type&, |
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75 float*, const octave_idx_type&, float*, const octave_idx_type&, |
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76 const octave_idx_type&, const octave_idx_type&, |
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77 float*); |
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78 |
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79 #endif |
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80 } |
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81 |
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82 FloatQR::FloatQR (const FloatMatrix& a, QR::type qr_type) |
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83 : q (), r () |
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84 { |
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85 init (a, qr_type); |
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86 } |
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87 |
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88 void |
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89 FloatQR::init (const FloatMatrix& a, QR::type qr_type) |
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90 { |
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91 octave_idx_type m = a.rows (); |
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92 octave_idx_type n = a.cols (); |
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93 |
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94 if (m == 0 || n == 0) |
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95 { |
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96 (*current_liboctave_error_handler) ("QR must have non-empty matrix"); |
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97 return; |
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98 } |
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99 |
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100 octave_idx_type min_mn = m < n ? m : n; |
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101 Array<float> tau (min_mn); |
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102 float *ptau = tau.fortran_vec (); |
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103 |
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104 octave_idx_type lwork = 32*n; |
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105 Array<float> work (lwork); |
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106 float *pwork = work.fortran_vec (); |
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107 |
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108 octave_idx_type info = 0; |
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109 |
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110 FloatMatrix A_fact = a; |
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111 if (m > n && qr_type != QR::economy) |
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112 A_fact.resize (m, m, 0.0); |
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113 |
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114 float *tmp_data = A_fact.fortran_vec (); |
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115 |
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116 F77_XFCN (sgeqrf, SGEQRF, (m, n, tmp_data, m, ptau, pwork, lwork, info)); |
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117 |
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118 if (qr_type == QR::raw) |
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119 { |
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120 for (octave_idx_type j = 0; j < min_mn; j++) |
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121 { |
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122 octave_idx_type limit = j < min_mn - 1 ? j : min_mn - 1; |
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123 for (octave_idx_type i = limit + 1; i < m; i++) |
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124 A_fact.elem (i, j) *= tau.elem (j); |
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125 } |
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126 |
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127 r = A_fact; |
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128 |
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129 if (m > n) |
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130 r.resize (m, n); |
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131 } |
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132 else |
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133 { |
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134 octave_idx_type n2 = (qr_type == QR::economy) ? min_mn : m; |
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135 |
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136 if (qr_type == QR::economy && m > n) |
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137 r.resize (n, n, 0.0); |
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138 else |
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139 r.resize (m, n, 0.0); |
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140 |
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141 for (octave_idx_type j = 0; j < n; j++) |
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142 { |
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143 octave_idx_type limit = j < min_mn-1 ? j : min_mn-1; |
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144 for (octave_idx_type i = 0; i <= limit; i++) |
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145 r.elem (i, j) = tmp_data[m*j+i]; |
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146 } |
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147 |
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148 lwork = 32 * n2; |
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149 work.resize (lwork); |
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150 float *pwork2 = work.fortran_vec (); |
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151 |
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152 F77_XFCN (sorgqr, SORGQR, (m, n2, min_mn, tmp_data, m, ptau, |
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153 pwork2, lwork, info)); |
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154 |
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155 q = A_fact; |
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156 q.resize (m, n2); |
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157 } |
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158 } |
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159 |
7924 | 160 FloatQR::FloatQR (const FloatMatrix& q_arg, const FloatMatrix& r_arg) |
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161 { |
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162 octave_idx_type qr = q_arg.rows (), qc = q_arg.columns (); |
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163 octave_idx_type rr = r_arg.rows (), rc = r_arg.columns (); |
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164 if (qc == rr && (qr == qc || (qr > qc && rr == rc))) |
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165 { |
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166 q = q_arg; |
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167 r = r_arg; |
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168 } |
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169 else |
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170 (*current_liboctave_error_handler) ("QR dimensions mismatch"); |
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171 } |
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172 |
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173 QR::type |
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174 FloatQR::get_type (void) const |
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175 { |
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176 QR::type retval; |
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177 if (!q.is_empty () && q.is_square ()) |
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178 retval = QR::std; |
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179 else if (q.rows () > q.columns () && r.is_square ()) |
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180 retval = QR::economy; |
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181 else |
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182 retval = QR::raw; |
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183 return retval; |
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184 } |
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185 |
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186 #ifdef HAVE_QRUPDATE |
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187 |
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188 void |
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189 FloatQR::update (const FloatColumnVector& u, const FloatColumnVector& v) |
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190 { |
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191 octave_idx_type m = q.rows (); |
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192 octave_idx_type n = r.columns (); |
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193 octave_idx_type k = q.columns (); |
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194 |
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195 if (u.length () == m && v.length () == n) |
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196 { |
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197 FloatColumnVector utmp = u, vtmp = v; |
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198 OCTAVE_LOCAL_BUFFER (float, w, 2*k); |
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199 F77_XFCN (sqr1up, SQR1UP, (m, n, k, q.fortran_vec (), m, r.fortran_vec (), k, |
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200 utmp.fortran_vec (), vtmp.fortran_vec (), w)); |
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201 } |
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202 else |
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203 (*current_liboctave_error_handler) ("qrupdate: dimensions mismatch"); |
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204 } |
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205 |
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|
206 void |
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|
207 FloatQR::update (const FloatMatrix& u, const FloatMatrix& v) |
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208 { |
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209 octave_idx_type m = q.rows (); |
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210 octave_idx_type n = r.columns (); |
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211 octave_idx_type k = q.columns (); |
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212 |
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|
213 if (u.rows () == m && v.rows () == n && u.cols () == v.cols ()) |
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|
214 { |
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|
215 OCTAVE_LOCAL_BUFFER (float, w, 2*k); |
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|
216 for (octave_idx_type i = 0; i < u.cols (); i++) |
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|
217 { |
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|
218 FloatColumnVector utmp = u.column (i), vtmp = v.column (i); |
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|
219 F77_XFCN (sqr1up, SQR1UP, (m, n, k, q.fortran_vec (), m, r.fortran_vec (), k, |
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|
220 utmp.fortran_vec (), vtmp.fortran_vec (), w)); |
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221 } |
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|
222 } |
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223 else |
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224 (*current_liboctave_error_handler) ("qrupdate: dimensions mismatch"); |
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225 } |
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226 |
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227 void |
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|
228 FloatQR::insert_col (const FloatColumnVector& u, octave_idx_type j) |
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229 { |
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230 octave_idx_type m = q.rows (); |
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231 octave_idx_type n = r.columns (); |
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232 octave_idx_type k = q.columns (); |
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233 |
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|
234 if (u.length () != m) |
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|
235 (*current_liboctave_error_handler) ("qrinsert: dimensions mismatch"); |
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236 else if (j < 0 || j > n) |
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|
237 (*current_liboctave_error_handler) ("qrinsert: index out of range"); |
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238 else |
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|
239 { |
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|
240 if (k < m) |
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|
241 { |
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|
242 q.resize (m, k+1); |
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|
243 r.resize (k+1, n+1); |
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244 } |
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|
245 else |
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|
246 { |
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|
247 r.resize (k, n+1); |
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|
248 } |
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249 |
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250 FloatColumnVector utmp = u; |
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251 OCTAVE_LOCAL_BUFFER (float, w, k); |
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252 F77_XFCN (sqrinc, SQRINC, (m, n, k, q.fortran_vec (), q.rows (), |
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253 r.fortran_vec (), r.rows (), j + 1, |
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254 utmp.data (), w)); |
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255 } |
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256 } |
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257 |
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258 void |
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259 FloatQR::insert_col (const FloatMatrix& u, const Array<octave_idx_type>& j) |
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260 { |
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261 octave_idx_type m = q.rows (); |
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262 octave_idx_type n = r.columns (); |
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263 octave_idx_type k = q.columns (); |
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264 |
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265 Array<octave_idx_type> jsi; |
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266 Array<octave_idx_type> js = j.sort (jsi, ASCENDING); |
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267 octave_idx_type nj = js.length (); |
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268 bool dups = false; |
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269 for (octave_idx_type i = 0; i < nj - 1; i++) |
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270 dups = dups && js(i) == js(i+1); |
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271 |
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272 if (dups) |
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273 (*current_liboctave_error_handler) ("qrinsert: duplicate index detected"); |
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274 else if (u.length () != m || u.columns () != nj) |
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275 (*current_liboctave_error_handler) ("qrinsert: dimensions mismatch"); |
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276 else if (nj > 0 && (js(0) < 0 || js(nj-1) > n)) |
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277 (*current_liboctave_error_handler) ("qrinsert: index out of range"); |
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278 else if (nj > 0) |
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279 { |
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280 octave_idx_type kmax = std::min (k + nj, m); |
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281 if (k < m) |
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282 { |
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283 q.resize (m, kmax); |
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284 r.resize (kmax, n + nj); |
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285 } |
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286 else |
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287 { |
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288 r.resize (k, n + nj); |
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289 } |
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290 |
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291 OCTAVE_LOCAL_BUFFER (float, w, kmax); |
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292 for (octave_idx_type i = 0; i < js.length (); i++) |
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293 { |
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294 FloatColumnVector utmp = u.column (jsi(i)); |
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295 F77_XFCN (sqrinc, SQRINC, (m, n + i, std::min (kmax, k + i), |
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296 q.fortran_vec (), q.rows (), |
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297 r.fortran_vec (), r.rows (), js(i) + 1, |
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298 utmp.data (), w)); |
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299 } |
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300 } |
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301 } |
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302 |
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303 void |
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304 FloatQR::delete_col (octave_idx_type j) |
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305 { |
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306 octave_idx_type m = q.rows (); |
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307 octave_idx_type k = r.rows (); |
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308 octave_idx_type n = r.columns (); |
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309 |
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310 if (j < 0 || j > n-1) |
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311 (*current_liboctave_error_handler) ("qrdelete: index out of range"); |
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312 else |
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313 { |
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314 OCTAVE_LOCAL_BUFFER (float, w, k); |
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315 F77_XFCN (sqrdec, SQRDEC, (m, n, k, q.fortran_vec (), q.rows (), |
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316 r.fortran_vec (), r.rows (), j + 1, w)); |
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317 |
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318 if (k < m) |
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319 { |
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320 q.resize (m, k-1); |
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321 r.resize (k-1, n-1); |
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322 } |
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323 else |
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324 { |
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325 r.resize (k, n-1); |
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326 } |
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327 } |
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328 } |
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329 |
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330 void |
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331 FloatQR::delete_col (const Array<octave_idx_type>& j) |
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332 { |
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333 octave_idx_type m = q.rows (); |
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334 octave_idx_type n = r.columns (); |
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335 octave_idx_type k = q.columns (); |
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336 |
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337 Array<octave_idx_type> jsi; |
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338 Array<octave_idx_type> js = j.sort (jsi, DESCENDING); |
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339 octave_idx_type nj = js.length (); |
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340 bool dups = false; |
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341 for (octave_idx_type i = 0; i < nj - 1; i++) |
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342 dups = dups && js(i) == js(i+1); |
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343 |
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344 if (dups) |
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345 (*current_liboctave_error_handler) ("qrinsert: duplicate index detected"); |
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346 else if (nj > 0 && (js(0) > n-1 || js(nj-1) < 0)) |
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347 (*current_liboctave_error_handler) ("qrinsert: index out of range"); |
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348 else if (nj > 0) |
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349 { |
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350 OCTAVE_LOCAL_BUFFER (float, w, k); |
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351 for (octave_idx_type i = 0; i < js.length (); i++) |
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352 { |
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353 F77_XFCN (sqrdec, SQRDEC, (m, n - i, k == m ? k : k - i, |
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354 q.fortran_vec (), q.rows (), |
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355 r.fortran_vec (), r.rows (), js(i) + 1, w)); |
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356 } |
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357 if (k < m) |
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358 { |
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359 q.resize (m, k - nj); |
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360 r.resize (k - nj, n - nj); |
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361 } |
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362 else |
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363 { |
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364 r.resize (k, n - nj); |
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365 } |
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366 |
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367 } |
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368 } |
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369 |
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370 void |
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371 FloatQR::insert_row (const FloatRowVector& u, octave_idx_type j) |
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372 { |
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373 octave_idx_type m = r.rows (); |
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374 octave_idx_type n = r.columns (); |
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375 octave_idx_type k = std::min (m, n); |
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376 |
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377 if (! q.is_square () || u.length () != n) |
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378 (*current_liboctave_error_handler) ("qrinsert: dimensions mismatch"); |
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379 else if (j < 0 || j > m) |
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380 (*current_liboctave_error_handler) ("qrinsert: index out of range"); |
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381 else |
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382 { |
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383 q.resize (m + 1, m + 1); |
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384 r.resize (m + 1, n); |
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385 FloatRowVector utmp = u; |
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386 OCTAVE_LOCAL_BUFFER (float, w, k); |
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387 F77_XFCN (sqrinr, SQRINR, (m, n, q.fortran_vec (), q.rows (), |
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388 r.fortran_vec (), r.rows (), |
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389 j + 1, utmp.fortran_vec (), w)); |
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390 |
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391 } |
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392 } |
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393 |
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394 void |
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395 FloatQR::delete_row (octave_idx_type j) |
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396 { |
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397 octave_idx_type m = r.rows (); |
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398 octave_idx_type n = r.columns (); |
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399 |
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400 if (! q.is_square ()) |
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401 (*current_liboctave_error_handler) ("qrdelete: dimensions mismatch"); |
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402 else if (j < 0 || j > m-1) |
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403 (*current_liboctave_error_handler) ("qrdelete: index out of range"); |
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404 else |
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405 { |
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406 OCTAVE_LOCAL_BUFFER (float, w, 2*m); |
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407 F77_XFCN (sqrder, SQRDER, (m, n, q.fortran_vec (), q.rows (), |
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408 r.fortran_vec (), r.rows (), j + 1, |
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409 w)); |
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410 |
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411 q.resize (m - 1, m - 1); |
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412 r.resize (m - 1, n); |
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413 } |
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414 } |
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415 |
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416 void |
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417 FloatQR::shift_cols (octave_idx_type i, octave_idx_type j) |
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418 { |
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419 octave_idx_type m = q.rows (); |
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420 octave_idx_type k = r.rows (); |
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421 octave_idx_type n = r.columns (); |
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422 |
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423 if (i < 0 || i > n-1 || j < 0 || j > n-1) |
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424 (*current_liboctave_error_handler) ("qrshift: index out of range"); |
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425 else |
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426 { |
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427 OCTAVE_LOCAL_BUFFER (float, w, 2*k); |
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428 F77_XFCN (sqrshc, SQRSHC, (m, n, k, |
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429 q.fortran_vec (), q.rows (), |
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430 r.fortran_vec (), r.rows (), |
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431 i + 1, j + 1, w)); |
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432 } |
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433 } |
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434 |
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435 #else |
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436 |
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437 // Replacement update methods. |
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438 |
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439 void |
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440 FloatQR::update (const FloatColumnVector& u, const FloatColumnVector& v) |
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441 { |
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442 warn_qrupdate_once (); |
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443 |
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444 octave_idx_type m = q.rows (); |
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445 octave_idx_type n = r.columns (); |
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446 |
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447 if (u.length () == m && v.length () == n) |
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448 { |
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449 init(q*r + FloatMatrix (u) * FloatMatrix (v).transpose (), get_type ()); |
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450 } |
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451 else |
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452 (*current_liboctave_error_handler) ("qrupdate: dimensions mismatch"); |
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453 } |
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454 |
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455 void |
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456 FloatQR::update (const FloatMatrix& u, const FloatMatrix& v) |
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457 { |
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458 warn_qrupdate_once (); |
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459 |
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460 octave_idx_type m = q.rows (); |
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461 octave_idx_type n = r.columns (); |
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462 |
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463 if (u.rows () == m && v.rows () == n && u.cols () == v.cols ()) |
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464 { |
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465 init(q*r + u * v.transpose (), get_type ()); |
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466 } |
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467 else |
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468 (*current_liboctave_error_handler) ("qrupdate: dimensions mismatch"); |
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469 } |
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470 |
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471 static |
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472 FloatMatrix insert_col (const FloatMatrix& a, octave_idx_type i, |
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473 const FloatColumnVector& x) |
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474 { |
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475 FloatMatrix retval (a.rows (), a.columns () + 1); |
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476 retval.assign (idx_vector::colon, idx_vector (0, i), |
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477 a.index (idx_vector::colon, idx_vector (0, i))); |
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478 retval.assign (idx_vector::colon, idx_vector (i), x); |
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479 retval.assign (idx_vector::colon, idx_vector (i+1, retval.columns ()), |
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480 a.index (idx_vector::colon, idx_vector (i, a.columns ()))); |
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481 return retval; |
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482 } |
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483 |
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484 static |
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485 FloatMatrix insert_row (const FloatMatrix& a, octave_idx_type i, |
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486 const FloatRowVector& x) |
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487 { |
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488 FloatMatrix retval (a.rows () + 1, a.columns ()); |
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489 retval.assign (idx_vector (0, i), idx_vector::colon, |
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490 a.index (idx_vector (0, i), idx_vector::colon)); |
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491 retval.assign (idx_vector (i), idx_vector::colon, x); |
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492 retval.assign (idx_vector (i+1, retval.rows ()), idx_vector::colon, |
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493 a.index (idx_vector (i, a.rows ()), idx_vector::colon)); |
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494 return retval; |
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495 } |
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496 |
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497 static |
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498 FloatMatrix delete_col (const FloatMatrix& a, octave_idx_type i) |
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499 { |
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500 FloatMatrix retval = a; |
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501 retval.delete_elements (1, idx_vector (i)); |
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502 return retval; |
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503 } |
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504 |
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505 static |
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506 FloatMatrix delete_row (const FloatMatrix& a, octave_idx_type i) |
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507 { |
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508 FloatMatrix retval = a; |
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509 retval.delete_elements (0, idx_vector (i)); |
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510 return retval; |
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511 } |
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512 |
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513 static |
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514 FloatMatrix shift_cols (const FloatMatrix& a, |
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515 octave_idx_type i, octave_idx_type j) |
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516 { |
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517 octave_idx_type n = a.columns (); |
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518 Array<octave_idx_type> p (n); |
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519 for (octave_idx_type k = 0; k < n; k++) p(k) = k; |
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520 if (i < j) |
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521 { |
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522 for (octave_idx_type k = i; k < j; k++) p(k) = k+1; |
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523 p(j) = i; |
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524 } |
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525 else if (j < i) |
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526 { |
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527 p(j) = i; |
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528 for (octave_idx_type k = j+1; k < i+1; k++) p(k) = k-1; |
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529 } |
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530 |
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531 return a.index (idx_vector::colon, idx_vector (p)); |
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532 } |
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|
533 |
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|
534 void |
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|
535 FloatQR::insert_col (const FloatColumnVector& u, octave_idx_type j) |
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536 { |
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|
537 warn_qrupdate_once (); |
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538 |
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539 octave_idx_type m = q.rows (); |
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540 octave_idx_type n = r.columns (); |
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541 |
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542 if (u.length () != m) |
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543 (*current_liboctave_error_handler) ("qrinsert: dimensions mismatch"); |
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544 else if (j < 0 || j > n) |
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545 (*current_liboctave_error_handler) ("qrinsert: index out of range"); |
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546 else |
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|
547 { |
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548 init (::insert_col (q*r, j, u), get_type ()); |
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549 } |
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|
550 } |
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|
551 |
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|
552 void |
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|
553 FloatQR::insert_col (const FloatMatrix& u, const Array<octave_idx_type>& j) |
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554 { |
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|
555 warn_qrupdate_once (); |
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|
556 |
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557 octave_idx_type m = q.rows (); |
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558 octave_idx_type n = r.columns (); |
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559 |
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560 Array<octave_idx_type> jsi; |
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561 Array<octave_idx_type> js = j.sort (jsi, ASCENDING); |
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562 octave_idx_type nj = js.length (); |
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563 bool dups = false; |
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564 for (octave_idx_type i = 0; i < nj - 1; i++) |
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565 dups = dups && js(i) == js(i+1); |
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|
566 |
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567 if (dups) |
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568 (*current_liboctave_error_handler) ("qrinsert: duplicate index detected"); |
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569 else if (u.length () != m || u.columns () != nj) |
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570 (*current_liboctave_error_handler) ("qrinsert: dimensions mismatch"); |
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571 else if (nj > 0 && (js(0) < 0 || js(nj-1) > n)) |
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572 (*current_liboctave_error_handler) ("qrinsert: index out of range"); |
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573 else if (nj > 0) |
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574 { |
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575 FloatMatrix a = q*r; |
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576 for (octave_idx_type i = 0; i < js.length (); i++) |
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577 a = ::insert_col (a, js(i), u.column (i)); |
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578 init (a, get_type ()); |
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579 } |
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|
580 } |
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|
581 |
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changeset
|
582 void |
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|
583 FloatQR::delete_col (octave_idx_type j) |
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584 { |
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|
585 warn_qrupdate_once (); |
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|
586 |
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587 octave_idx_type m = q.rows (); |
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588 octave_idx_type n = r.columns (); |
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|
589 |
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changeset
|
590 if (j < 0 || j > n-1) |
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591 (*current_liboctave_error_handler) ("qrdelete: index out of range"); |
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592 else |
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changeset
|
593 { |
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594 init (::delete_col (q*r, j), get_type ()); |
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595 } |
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diff
changeset
|
596 } |
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changeset
|
597 |
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diff
changeset
|
598 void |
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|
599 FloatQR::delete_col (const Array<octave_idx_type>& j) |
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|
600 { |
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|
601 warn_qrupdate_once (); |
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|
602 |
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diff
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|
603 octave_idx_type m = q.rows (); |
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604 octave_idx_type n = r.columns (); |
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605 |
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606 Array<octave_idx_type> jsi; |
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607 Array<octave_idx_type> js = j.sort (jsi, DESCENDING); |
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608 octave_idx_type nj = js.length (); |
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609 bool dups = false; |
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610 for (octave_idx_type i = 0; i < nj - 1; i++) |
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611 dups = dups && js(i) == js(i+1); |
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612 |
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613 if (dups) |
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614 (*current_liboctave_error_handler) ("qrinsert: duplicate index detected"); |
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615 else if (nj > 0 && (js(0) > n-1 || js(nj-1) < 0)) |
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616 (*current_liboctave_error_handler) ("qrinsert: index out of range"); |
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617 else if (nj > 0) |
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618 { |
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619 FloatMatrix a = q*r; |
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620 for (octave_idx_type i = 0; i < js.length (); i++) |
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621 a = ::delete_col (a, js(i)); |
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622 init (a, get_type ()); |
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623 } |
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624 } |
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625 |
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626 void |
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627 FloatQR::insert_row (const FloatRowVector& u, octave_idx_type j) |
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628 { |
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629 warn_qrupdate_once (); |
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630 |
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631 octave_idx_type m = r.rows (); |
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632 octave_idx_type n = r.columns (); |
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633 |
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634 if (! q.is_square () || u.length () != n) |
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635 (*current_liboctave_error_handler) ("qrinsert: dimensions mismatch"); |
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636 else if (j < 0 || j > m) |
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637 (*current_liboctave_error_handler) ("qrinsert: index out of range"); |
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638 else |
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639 { |
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640 init (::insert_row (q*r, j, u), get_type ()); |
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641 } |
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642 } |
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643 |
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644 void |
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645 FloatQR::delete_row (octave_idx_type j) |
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646 { |
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647 warn_qrupdate_once (); |
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648 |
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649 octave_idx_type m = r.rows (); |
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650 octave_idx_type n = r.columns (); |
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651 |
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652 if (! q.is_square ()) |
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653 (*current_liboctave_error_handler) ("qrdelete: dimensions mismatch"); |
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654 else if (j < 0 || j > m-1) |
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655 (*current_liboctave_error_handler) ("qrdelete: index out of range"); |
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656 else |
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657 { |
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658 init (::delete_row (q*r, j), get_type ()); |
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659 } |
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660 } |
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661 |
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662 void |
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663 FloatQR::shift_cols (octave_idx_type i, octave_idx_type j) |
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664 { |
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665 warn_qrupdate_once (); |
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666 |
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667 octave_idx_type m = q.rows (); |
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668 octave_idx_type n = r.columns (); |
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669 |
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670 if (i < 0 || i > n-1 || j < 0 || j > n-1) |
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671 (*current_liboctave_error_handler) ("qrshift: index out of range"); |
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672 else |
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673 { |
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674 init (::shift_cols (q*r, i, j), get_type ()); |
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675 } |
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676 } |
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677 |
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678 #endif |
7792
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679 |
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680 |
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681 /* |
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682 ;;; Local Variables: *** |
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683 ;;; mode: C++ *** |
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684 ;;; End: *** |
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685 */ |