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annotate liboctave/array/fDiagMatrix.h @ 31225:3eab70385569

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sparse-xpow.cc: Use faster multiplication technique, this time for complex
author Arun Giridhar <arungiridhar@gmail.com>
date Sun, 11 Sep 2022 13:53:38 -0400
parents 796f54d4ddbf
children 597f3ee61a48
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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 (octave_fDiagMatrix_h)
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27 #define octave_fDiagMatrix_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include "DET.h"
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32 #include "MDiagArray2.h"
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33 #include "fColVector.h"
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34 #include "fRowVector.h"
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35 #include "mx-defs.h"
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36
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37 class
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38 OCTAVE_API
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39 FloatDiagMatrix : public MDiagArray2<float>
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40 {
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41 public:
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42
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43 typedef FloatMatrix full_matrix_type;
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44
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45 FloatDiagMatrix (void) = default;
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46
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47 FloatDiagMatrix (const FloatDiagMatrix& a) = default;
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48
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49 FloatDiagMatrix& operator = (const FloatDiagMatrix& a) = default;
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50
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51 ~FloatDiagMatrix (void) = default;
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52
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53 FloatDiagMatrix (octave_idx_type r, octave_idx_type c)
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54 : MDiagArray2<float> (r, c) { }
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55
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56 FloatDiagMatrix (octave_idx_type r, octave_idx_type c, float val)
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57 : MDiagArray2<float> (r, c, val) { }
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58
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59 FloatDiagMatrix (const MDiagArray2<float>& a) : MDiagArray2<float> (a) { }
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60
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61 template <typename U>
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62 FloatDiagMatrix (const DiagArray2<U>& a) : MDiagArray2<float> (a) { }
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63
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64 explicit FloatDiagMatrix (const Array<double>& a) : MDiagArray2<float> (a) { }
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65
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66 FloatDiagMatrix (const Array<float>& a, octave_idx_type r, octave_idx_type c)
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67 : MDiagArray2<float> (a, r, c) { }
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68
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69 OCTAVE_API bool operator == (const FloatDiagMatrix& a) const;
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70 OCTAVE_API bool operator != (const FloatDiagMatrix& a) const;
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71
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72 OCTAVE_API FloatDiagMatrix& fill (float val);
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73 OCTAVE_API FloatDiagMatrix&
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74 fill (float val, octave_idx_type beg, octave_idx_type end);
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75 OCTAVE_API FloatDiagMatrix& fill (const FloatColumnVector& a);
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76 OCTAVE_API FloatDiagMatrix& fill (const FloatRowVector& a);
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77 OCTAVE_API FloatDiagMatrix&
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78 fill (const FloatColumnVector& a, octave_idx_type beg);
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79 OCTAVE_API FloatDiagMatrix&
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80 fill (const FloatRowVector& a, octave_idx_type beg);
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81
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82 FloatDiagMatrix transpose (void) const
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83 { return MDiagArray2<float>::transpose (); }
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84
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85 OCTAVE_API FloatDiagMatrix abs (void) const;
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86
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87 friend OCTAVE_API FloatDiagMatrix real (const FloatComplexDiagMatrix& a);
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88 friend OCTAVE_API FloatDiagMatrix imag (const FloatComplexDiagMatrix& a);
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89
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90 // resize is the destructive analog for this one
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91
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92 OCTAVE_API FloatMatrix
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93 extract (octave_idx_type r1, octave_idx_type c1,
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94 octave_idx_type r2, octave_idx_type c2) const;
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95
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96 // extract row or column i.
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97
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98 OCTAVE_API FloatRowVector row (octave_idx_type i) const;
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99 OCTAVE_API FloatRowVector row (char *s) const;
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100
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101 OCTAVE_API FloatColumnVector column (octave_idx_type i) const;
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102 OCTAVE_API FloatColumnVector column (char *s) const;
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103
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104 OCTAVE_API FloatDiagMatrix inverse (void) const;
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105 OCTAVE_API FloatDiagMatrix inverse (octave_idx_type& info) const;
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106 OCTAVE_API FloatDiagMatrix pseudo_inverse (float tol = 0.0f) const;
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107
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108 // other operations
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109
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110 FloatColumnVector extract_diag (octave_idx_type k = 0) const
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111 { return MDiagArray2<float>::extract_diag (k); }
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112
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113 OCTAVE_API FloatDET determinant (void) const;
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114 OCTAVE_API float rcond (void) const;
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115
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116 // i/o
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117
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118 friend OCTAVE_API std::ostream&
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119 operator << (std::ostream& os, const FloatDiagMatrix& a);
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120
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121 };
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122
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123 OCTAVE_API FloatDiagMatrix real (const FloatComplexDiagMatrix& a);
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124 OCTAVE_API FloatDiagMatrix imag (const FloatComplexDiagMatrix& a);
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125
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126 // diagonal matrix by diagonal matrix -> diagonal matrix operations
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127
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128 OCTAVE_API FloatDiagMatrix
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129 operator * (const FloatDiagMatrix& a, const FloatDiagMatrix& b);
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130
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131 MDIAGARRAY2_FORWARD_DEFS (MDiagArray2, FloatDiagMatrix, float)
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132
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133 #endif