Mercurial > octave
annotate liboctave/numeric/qrp.cc @ 22951:2e6a327e7903
use F77_INT instead of octave_idx_type for liboctave QRP functions
* qrp.cc: Use F77_INT instead of octave_idx_type for integer
data passed to Fortran subroutines.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 26 Dec 2016 21:24:32 -0500 |
parents | 3a2b891d0b33 |
children | cd33c785e80e |
rev | line source |
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538 | 1 /* |
2 | |
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3 Copyright (C) 1994-2016 John W. Eatonn |
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4 Copyright (C) 2009 VZLU Prague |
538 | 5 |
6 This file is part of Octave. | |
7 | |
8 Octave is free software; you can redistribute it and/or modify it | |
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9 under the terms of the GNU General Public License as published by |
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10 the Free Software Foundation; either version 3 of the License, or |
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11 (at your option) any later version. |
538 | 12 |
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13 Octave is distributed in the hope that it will be useful, but |
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14 WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 GNU General Public License for more details. |
538 | 17 |
18 You should have received a copy of the GNU General Public License | |
7016 | 19 along with Octave; see the file COPYING. If not, see |
20 <http://www.gnu.org/licenses/>. | |
538 | 21 |
22 */ | |
23 | |
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24 #if defined (HAVE_CONFIG_H) |
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25 # include "config.h" |
538 | 26 #endif |
27 | |
1367 | 28 #include <cassert> |
538 | 29 |
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30 #include "CMatrix.h" |
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31 #include "dMatrix.h" |
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32 #include "dRowVector.h" |
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33 #include "fCMatrix.h" |
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34 #include "fMatrix.h" |
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35 #include "fRowVector.h" |
538 | 36 #include "lo-error.h" |
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37 #include "lo-lapack-proto.h" |
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38 #include "oct-locbuf.h" |
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39 #include "qrp.h" |
538 | 40 |
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41 namespace octave |
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42 { |
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43 namespace math |
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44 { |
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45 // Specialization. |
538 | 46 |
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47 template <> |
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48 void |
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49 qrp<Matrix>::init (const Matrix& a, type qr_type) |
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50 { |
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51 assert (qr_type != qr<Matrix>::raw); |
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52 |
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53 F77_INT m = to_f77_int (a.rows ()); |
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54 F77_INT n = to_f77_int (a.cols ()); |
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55 |
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56 F77_INT min_mn = m < n ? m : n; |
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57 OCTAVE_LOCAL_BUFFER (double, tau, min_mn); |
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58 |
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59 F77_INT info = 0; |
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60 |
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61 Matrix afact = a; |
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62 if (m > n && qr_type == qr<Matrix>::std) |
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63 afact.resize (m, m); |
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64 |
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65 MArray<F77_INT> jpvt (dim_vector (n, 1), 0); |
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66 |
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67 if (m > 0) |
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68 { |
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69 // workspace query. |
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70 double rlwork; |
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71 F77_XFCN (dgeqp3, DGEQP3, (m, n, afact.fortran_vec (), |
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72 m, jpvt.fortran_vec (), tau, |
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73 &rlwork, -1, info)); |
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74 |
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75 // allocate buffer and do the job. |
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76 F77_INT lwork = static_cast<F77_INT> (rlwork); |
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77 lwork = std::max (lwork, static_cast<F77_INT> (1)); |
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78 OCTAVE_LOCAL_BUFFER (double, work, lwork); |
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79 |
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80 F77_XFCN (dgeqp3, DGEQP3, (m, n, afact.fortran_vec (), |
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81 m, jpvt.fortran_vec (), tau, |
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82 work, lwork, info)); |
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83 } |
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84 else |
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85 { |
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86 for (F77_INT i = 0; i < n; i++) |
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87 jpvt(i) = i+1; |
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88 } |
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89 |
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90 // Form Permutation matrix (if economy is requested, return the |
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91 // indices only!) |
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92 |
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93 jpvt -= static_cast<F77_INT> (1); |
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94 p = PermMatrix (jpvt, true); |
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95 |
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96 form (n, afact, tau, qr_type); |
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97 } |
1922 | 98 |
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99 template <> |
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100 qrp<Matrix>::qrp (const Matrix& a, type qr_type) |
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101 : qr<Matrix> (), p () |
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102 { |
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103 init (a, qr_type); |
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104 } |
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105 |
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106 template <> |
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107 RowVector |
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108 qrp<Matrix>::Pvec (void) const |
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109 { |
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110 Array<double> pa (p.col_perm_vec ()); |
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111 RowVector pv (MArray<double> (pa) + 1.0); |
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112 return pv; |
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113 } |
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114 |
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115 template <> |
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116 void |
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117 qrp<FloatMatrix>::init (const FloatMatrix& a, type qr_type) |
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118 { |
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119 assert (qr_type != qr<FloatMatrix>::raw); |
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120 |
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121 F77_INT m = to_f77_int (a.rows ()); |
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122 F77_INT n = to_f77_int (a.cols ()); |
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123 |
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124 F77_INT min_mn = m < n ? m : n; |
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125 OCTAVE_LOCAL_BUFFER (float, tau, min_mn); |
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126 |
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127 F77_INT info = 0; |
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128 |
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129 FloatMatrix afact = a; |
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130 if (m > n && qr_type == qr<FloatMatrix>::std) |
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131 afact.resize (m, m); |
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132 |
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133 MArray<F77_INT> jpvt (dim_vector (n, 1), 0); |
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134 |
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135 if (m > 0) |
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136 { |
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137 // workspace query. |
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138 float rlwork; |
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139 F77_XFCN (sgeqp3, SGEQP3, (m, n, afact.fortran_vec (), |
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140 m, jpvt.fortran_vec (), tau, |
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141 &rlwork, -1, info)); |
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142 |
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143 // allocate buffer and do the job. |
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144 F77_INT lwork = static_cast<F77_INT> (rlwork); |
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145 lwork = std::max (lwork, static_cast<F77_INT> (1)); |
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146 OCTAVE_LOCAL_BUFFER (float, work, lwork); |
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147 |
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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 work, lwork, info)); |
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151 } |
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152 else |
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153 { |
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154 for (F77_INT i = 0; i < n; i++) |
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155 jpvt(i) = i+1; |
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156 } |
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157 |
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158 // Form Permutation matrix (if economy is requested, return the |
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159 // indices only!) |
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160 |
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161 jpvt -= static_cast<F77_INT> (1); |
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162 p = PermMatrix (jpvt, true); |
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163 |
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164 form (n, afact, tau, qr_type); |
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165 } |
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166 |
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167 template <> |
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168 qrp<FloatMatrix>::qrp (const FloatMatrix& a, type qr_type) |
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169 : qr<FloatMatrix> (), p () |
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170 { |
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171 init (a, qr_type); |
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172 } |
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173 |
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174 template <> |
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175 FloatRowVector |
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176 qrp<FloatMatrix>::Pvec (void) const |
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177 { |
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178 Array<float> pa (p.col_perm_vec ()); |
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179 FloatRowVector pv (MArray<float> (pa) + 1.0f); |
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180 return pv; |
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181 } |
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182 |
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183 template <> |
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184 void |
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185 qrp<ComplexMatrix>::init (const ComplexMatrix& a, type qr_type) |
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186 { |
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187 assert (qr_type != qr<ComplexMatrix>::raw); |
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188 |
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189 F77_INT m = to_f77_int (a.rows ()); |
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190 F77_INT n = to_f77_int (a.cols ()); |
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191 |
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192 F77_INT min_mn = m < n ? m : n; |
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193 OCTAVE_LOCAL_BUFFER (Complex, tau, min_mn); |
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194 |
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195 F77_INT info = 0; |
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196 |
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197 ComplexMatrix afact = a; |
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198 if (m > n && qr_type == qr<ComplexMatrix>::std) |
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199 afact.resize (m, m); |
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200 |
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201 MArray<F77_INT> jpvt (dim_vector (n, 1), 0); |
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202 |
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203 if (m > 0) |
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204 { |
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205 OCTAVE_LOCAL_BUFFER (double, rwork, 2*n); |
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206 |
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207 // workspace query. |
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208 Complex clwork; |
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209 F77_XFCN (zgeqp3, ZGEQP3, (m, n, |
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210 F77_DBLE_CMPLX_ARG (afact.fortran_vec ()), |
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211 m, jpvt.fortran_vec (), |
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212 F77_DBLE_CMPLX_ARG (tau), |
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213 F77_DBLE_CMPLX_ARG (&clwork), |
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214 -1, rwork, info)); |
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215 |
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216 // allocate buffer and do the job. |
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217 F77_INT lwork = static_cast<F77_INT> (clwork.real ()); |
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218 lwork = std::max (lwork, static_cast<F77_INT> (1)); |
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219 OCTAVE_LOCAL_BUFFER (Complex, work, lwork); |
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220 |
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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 (work), |
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226 lwork, rwork, info)); |
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227 } |
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228 else |
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229 { |
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230 for (F77_INT i = 0; i < n; i++) |
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231 jpvt(i) = i+1; |
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232 } |
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233 |
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234 // Form Permutation matrix (if economy is requested, return the |
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235 // indices only!) |
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236 |
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237 jpvt -= static_cast<F77_INT> (1); |
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238 p = PermMatrix (jpvt, true); |
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239 |
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240 form (n, afact, tau, qr_type); |
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241 } |
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242 |
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243 template <> |
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244 qrp<ComplexMatrix>::qrp (const ComplexMatrix& a, type qr_type) |
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245 : qr<ComplexMatrix> (), p () |
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246 { |
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247 init (a, qr_type); |
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248 } |
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249 |
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250 template <> |
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251 RowVector |
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252 qrp<ComplexMatrix>::Pvec (void) const |
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253 { |
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254 Array<double> pa (p.col_perm_vec ()); |
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255 RowVector pv (MArray<double> (pa) + 1.0); |
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256 return pv; |
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257 } |
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258 |
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259 template <> |
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260 void |
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261 qrp<FloatComplexMatrix>::init (const FloatComplexMatrix& a, type qr_type) |
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262 { |
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263 assert (qr_type != qr<FloatComplexMatrix>::raw); |
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264 |
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265 F77_INT m = to_f77_int (a.rows ()); |
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266 F77_INT n = to_f77_int (a.cols ()); |
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267 |
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268 F77_INT min_mn = m < n ? m : n; |
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269 OCTAVE_LOCAL_BUFFER (FloatComplex, tau, min_mn); |
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270 |
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271 F77_INT info = 0; |
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272 |
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273 FloatComplexMatrix afact = a; |
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274 if (m > n && qr_type == qr<FloatComplexMatrix>::std) |
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275 afact.resize (m, m); |
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276 |
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277 MArray<F77_INT> jpvt (dim_vector (n, 1), 0); |
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278 |
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279 if (m > 0) |
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280 { |
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281 OCTAVE_LOCAL_BUFFER (float, rwork, 2*n); |
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282 |
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283 // workspace query. |
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284 FloatComplex clwork; |
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285 F77_XFCN (cgeqp3, CGEQP3, (m, n, |
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286 F77_CMPLX_ARG (afact.fortran_vec ()), |
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287 m, jpvt.fortran_vec (), |
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288 F77_CMPLX_ARG (tau), |
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289 F77_CMPLX_ARG (&clwork), |
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290 -1, rwork, info)); |
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291 |
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292 // allocate buffer and do the job. |
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293 F77_INT lwork = static_cast<F77_INT> (clwork.real ()); |
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294 lwork = std::max (lwork, static_cast<F77_INT> (1)); |
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295 OCTAVE_LOCAL_BUFFER (FloatComplex, work, lwork); |
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296 |
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297 F77_XFCN (cgeqp3, CGEQP3, (m, n, |
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298 F77_CMPLX_ARG (afact.fortran_vec ()), |
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299 m, jpvt.fortran_vec (), |
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300 F77_CMPLX_ARG (tau), |
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301 F77_CMPLX_ARG (work), |
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302 lwork, rwork, info)); |
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303 } |
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304 else |
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305 { |
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306 for (F77_INT i = 0; i < n; i++) |
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307 jpvt(i) = i+1; |
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308 } |
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309 |
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310 // Form Permutation matrix (if economy is requested, return the |
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311 // indices only!) |
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312 |
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313 jpvt -= static_cast<F77_INT> (1); |
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314 p = PermMatrix (jpvt, true); |
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315 |
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316 form (n, afact, tau, qr_type); |
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317 } |
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318 |
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319 template <> |
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320 qrp<FloatComplexMatrix>::qrp (const FloatComplexMatrix& a, type qr_type) |
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321 : qr<FloatComplexMatrix> (), p () |
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322 { |
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323 init (a, qr_type); |
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324 } |
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325 |
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326 template <> |
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327 FloatRowVector |
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328 qrp<FloatComplexMatrix>::Pvec (void) const |
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329 { |
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330 Array<float> pa (p.col_perm_vec ()); |
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331 FloatRowVector pv (MArray<float> (pa) + 1.0f); |
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332 return pv; |
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333 } |
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334 } |
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335 } |
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336 |