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annotate liboctave/array/fCRowVector.cc @ 23219:3ac9f9ecfae5 stable

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maint: Update copyright dates.
author John W. Eaton <jwe@octave.org>
date Wed, 22 Feb 2017 12:39:29 -0500
parents e9a0469dedd9
children 092078913d54
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1 // RowVector manipulations.
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2 /*
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3
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4 Copyright (C) 1994-2017 John W. Eaton
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5
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6 This file is part of Octave.
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7
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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 the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #if defined (HAVE_CONFIG_H)
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25 # include "config.h"
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26 #endif
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27
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28 #include <iostream>
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29
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30 #include "Array-util.h"
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31 #include "functor.h"
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32 #include "lo-blas-proto.h"
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33 #include "lo-error.h"
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34 #include "mx-base.h"
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35 #include "mx-inlines.cc"
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36 #include "oct-cmplx.h"
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37
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38 // FloatComplex Row Vector class
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39
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40 bool
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41 FloatComplexRowVector::operator == (const FloatComplexRowVector& a) const
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42 {
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43 octave_idx_type len = numel ();
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44 if (len != a.numel ())
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45 return 0;
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46 return mx_inline_equal (len, data (), a.data ());
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47 }
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48
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49 bool
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50 FloatComplexRowVector::operator != (const FloatComplexRowVector& a) const
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51 {
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52 return !(*this == a);
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53 }
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54
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55 // destructive insert/delete/reorder operations
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56
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57 FloatComplexRowVector&
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58 FloatComplexRowVector::insert (const FloatRowVector& a, octave_idx_type c)
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59 {
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60 octave_idx_type a_len = a.numel ();
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61
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62 if (c < 0 || c + a_len > numel ())
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63 (*current_liboctave_error_handler) ("range error for insert");
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64
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65 if (a_len > 0)
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66 {
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67 make_unique ();
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68
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69 for (octave_idx_type i = 0; i < a_len; i++)
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70 xelem (c+i) = a.elem (i);
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71 }
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72
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73 return *this;
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74 }
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75
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76 FloatComplexRowVector&
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77 FloatComplexRowVector::insert (const FloatComplexRowVector& a,
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78 octave_idx_type c)
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79 {
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80 octave_idx_type a_len = a.numel ();
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81
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82 if (c < 0 || c + a_len > numel ())
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83 (*current_liboctave_error_handler) ("range error for insert");
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84
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85 if (a_len > 0)
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86 {
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87 make_unique ();
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88
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89 for (octave_idx_type i = 0; i < a_len; i++)
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90 xelem (c+i) = a.elem (i);
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91 }
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92
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93 return *this;
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94 }
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95
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96 FloatComplexRowVector&
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97 FloatComplexRowVector::fill (float val)
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98 {
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99 octave_idx_type len = numel ();
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100
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101 if (len > 0)
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102 {
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103 make_unique ();
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104
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105 for (octave_idx_type i = 0; i < len; i++)
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106 xelem (i) = val;
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107 }
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108
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109 return *this;
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110 }
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111
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112 FloatComplexRowVector&
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113 FloatComplexRowVector::fill (const FloatComplex& val)
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114 {
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115 octave_idx_type len = numel ();
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116
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117 if (len > 0)
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118 {
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119 make_unique ();
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120
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121 for (octave_idx_type i = 0; i < len; i++)
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122 xelem (i) = val;
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123 }
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124
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125 return *this;
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126 }
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127
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128 FloatComplexRowVector&
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129 FloatComplexRowVector::fill (float val, octave_idx_type c1, octave_idx_type c2)
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130 {
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131 octave_idx_type len = numel ();
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132
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133 if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len)
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134 (*current_liboctave_error_handler) ("range error for fill");
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135
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136 if (c1 > c2) { std::swap (c1, c2); }
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137
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138 if (c2 >= c1)
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139 {
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140 make_unique ();
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141
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142 for (octave_idx_type i = c1; i <= c2; i++)
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143 xelem (i) = val;
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144 }
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145
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146 return *this;
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147 }
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148
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149 FloatComplexRowVector&
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150 FloatComplexRowVector::fill (const FloatComplex& val,
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151 octave_idx_type c1, octave_idx_type c2)
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152 {
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153 octave_idx_type len = numel ();
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154
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155 if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len)
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156 (*current_liboctave_error_handler) ("range error for fill");
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157
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158 if (c1 > c2) { std::swap (c1, c2); }
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159
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160 if (c2 >= c1)
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161 {
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162 make_unique ();
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163
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164 for (octave_idx_type i = c1; i <= c2; i++)
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165 xelem (i) = val;
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166 }
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167
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168 return *this;
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169 }
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170
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171 FloatComplexRowVector
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172 FloatComplexRowVector::append (const FloatRowVector& a) const
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173 {
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174 octave_idx_type len = numel ();
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175 octave_idx_type nc_insert = len;
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176 FloatComplexRowVector retval (len + a.numel ());
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177 retval.insert (*this, 0);
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178 retval.insert (a, nc_insert);
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179 return retval;
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180 }
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181
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182 FloatComplexRowVector
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183 FloatComplexRowVector::append (const FloatComplexRowVector& a) const
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184 {
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185 octave_idx_type len = numel ();
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186 octave_idx_type nc_insert = len;
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187 FloatComplexRowVector retval (len + a.numel ());
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188 retval.insert (*this, 0);
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189 retval.insert (a, nc_insert);
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190 return retval;
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191 }
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192
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193 FloatComplexColumnVector
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194 FloatComplexRowVector::hermitian (void) const
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195 {
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196 return MArray<FloatComplex>::hermitian (std::conj);
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197 }
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198
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199 FloatComplexColumnVector
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200 FloatComplexRowVector::transpose (void) const
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201 {
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202 return MArray<FloatComplex>::transpose ();
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203 }
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204
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205 FloatComplexRowVector
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206 conj (const FloatComplexRowVector& a)
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207 {
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208 return do_mx_unary_map<FloatComplex, FloatComplex, std::conj<float> > (a);
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209 }
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210
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211 // resize is the destructive equivalent for this one
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212
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213 FloatComplexRowVector
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214 FloatComplexRowVector::extract (octave_idx_type c1, octave_idx_type c2) const
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215 {
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216 if (c1 > c2) { std::swap (c1, c2); }
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217
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218 octave_idx_type new_c = c2 - c1 + 1;
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219
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220 FloatComplexRowVector result (new_c);
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221
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222 for (octave_idx_type i = 0; i < new_c; i++)
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223 result.elem (i) = elem (c1+i);
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224
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225 return result;
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226 }
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227
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228 FloatComplexRowVector
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229 FloatComplexRowVector::extract_n (octave_idx_type r1, octave_idx_type n) const
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230 {
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231 FloatComplexRowVector result (n);
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232
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233 for (octave_idx_type i = 0; i < n; i++)
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234 result.elem (i) = elem (r1+i);
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235
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236 return result;
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237 }
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238
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239 // row vector by row vector -> row vector operations
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240
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241 FloatComplexRowVector&
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242 FloatComplexRowVector::operator += (const FloatRowVector& a)
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243 {
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244 octave_idx_type len = numel ();
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245
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246 octave_idx_type a_len = a.numel ();
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247
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248 if (len != a_len)
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249 octave::err_nonconformant ("operator +=", len, a_len);
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250
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251 if (len == 0)
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252 return *this;
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253
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254 FloatComplex *d = fortran_vec (); // Ensures only 1 reference to my privates!
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255
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256 mx_inline_add2 (len, d, a.data ());
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257 return *this;
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258 }
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259
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260 FloatComplexRowVector&
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261 FloatComplexRowVector::operator -= (const FloatRowVector& a)
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262 {
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263 octave_idx_type len = numel ();
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264
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265 octave_idx_type a_len = a.numel ();
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266
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267 if (len != a_len)
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268 octave::err_nonconformant ("operator -=", len, a_len);
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269
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270 if (len == 0)
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271 return *this;
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272
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273 FloatComplex *d = fortran_vec (); // Ensures only 1 reference to my privates!
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274
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275 mx_inline_sub2 (len, d, a.data ());
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276 return *this;
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277 }
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278
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279 // row vector by matrix -> row vector
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280
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281 FloatComplexRowVector
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282 operator * (const FloatComplexRowVector& v, const FloatComplexMatrix& a)
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283 {
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284 FloatComplexRowVector retval;
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285
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286 octave_idx_type len = v.numel ();
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287
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288 octave_idx_type a_nr = a.rows ();
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289 octave_idx_type a_nc = a.cols ();
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290
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291 if (a_nr != len)
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292 octave::err_nonconformant ("operator *", 1, len, a_nr, a_nc);
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293
499b851fbfae Replace pattern if/err_XXX/else/code with if/err_XXX/ code.
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294 if (len == 0)
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295 retval.resize (a_nc, 0.0);
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296 else
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297 {
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298 // Transpose A to form A'*x == (x'*A)'
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299
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300 octave_idx_type ld = a_nr;
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301
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302 retval.resize (a_nc);
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303 FloatComplex *y = retval.fortran_vec ();
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304
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305 F77_XFCN (cgemv, CGEMV, (F77_CONST_CHAR_ARG2 ("T", 1),
22135
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306 a_nr, a_nc, 1.0, F77_CONST_CMPLX_ARG (a.data ()),
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307 ld, F77_CONST_CMPLX_ARG (v.data ()), 1, 0.0, F77_CMPLX_ARG (y), 1
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308 F77_CHAR_ARG_LEN (1)));
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309 }
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310
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311 return retval;
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312 }
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313
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314 FloatComplexRowVector
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315 operator * (const FloatRowVector& v, const FloatComplexMatrix& a)
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316 {
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317 FloatComplexRowVector tmp (v);
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318 return tmp * a;
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319 }
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320
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321 // other operations
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322
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323 FloatComplex
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324 FloatComplexRowVector::min (void) const
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325 {
20232
a9574e3c6e9e Deprecate Array::length() and Sparse::length() in favour of ::numel().
Carnë Draug <carandraug@octave.org>
parents: 19697
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326 octave_idx_type len = numel ();
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327 if (len == 0)
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328 return FloatComplex (0.0);
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329
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330 FloatComplex res = elem (0);
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331 float absres = std::abs (res);
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332
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333 for (octave_idx_type i = 1; i < len; i++)
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334 if (std::abs (elem (i)) < absres)
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335 {
10314
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336 res = elem (i);
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337 absres = std::abs (res);
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338 }
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339
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340 return res;
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341 }
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342
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343 FloatComplex
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344 FloatComplexRowVector::max (void) const
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345 {
20232
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Carnë Draug <carandraug@octave.org>
parents: 19697
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346 octave_idx_type len = numel ();
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347 if (len == 0)
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348 return FloatComplex (0.0);
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349
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350 FloatComplex res = elem (0);
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351 float absres = std::abs (res);
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352
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353 for (octave_idx_type i = 1; i < len; i++)
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354 if (std::abs (elem (i)) > absres)
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355 {
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356 res = elem (i);
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parents: 10158
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357 absres = std::abs (res);
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358 }
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359
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360 return res;
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361 }
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362
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363 // i/o
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364
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365 std::ostream&
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366 operator << (std::ostream& os, const FloatComplexRowVector& a)
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367 {
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368 // int field_width = os.precision () + 7;
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parents: 19697
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369 for (octave_idx_type i = 0; i < a.numel (); i++)
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370 os << " " /* setw (field_width) */ << a.elem (i);
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371 return os;
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372 }
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373
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374 std::istream&
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375 operator >> (std::istream& is, FloatComplexRowVector& a)
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376 {
20232
a9574e3c6e9e Deprecate Array::length() and Sparse::length() in favour of ::numel().
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parents: 19697
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377 octave_idx_type len = a.numel ();
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378
8999
dc07bc4157b8 allow empty matrices in stream input operators
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
379 if (len > 0)
7789
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380 {
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381 FloatComplex tmp;
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382 for (octave_idx_type i = 0; i < len; i++)
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383 {
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384 is >> tmp;
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385 if (is)
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386 a.elem (i) = tmp;
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387 else
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388 break;
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389 }
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390 }
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391 return is;
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392 }
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393
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394 // row vector by column vector -> scalar
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395
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396 // row vector by column vector -> scalar
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397
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398 FloatComplex
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399 operator * (const FloatComplexRowVector& v, const FloatColumnVector& a)
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400 {
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diff changeset
401 FloatComplexColumnVector tmp (a);
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402 return v * tmp;
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403 }
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diff changeset
404
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diff changeset
405 FloatComplex
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diff changeset
406 operator * (const FloatComplexRowVector& v, const FloatComplexColumnVector& a)
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parents:
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407 {
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diff changeset
408 FloatComplex retval (0.0, 0.0);
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diff changeset
409
20232
a9574e3c6e9e Deprecate Array::length() and Sparse::length() in favour of ::numel().
Carnë Draug <carandraug@octave.org>
parents: 19697
diff changeset
410 octave_idx_type len = v.numel ();
7789
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diff changeset
411
20232
a9574e3c6e9e Deprecate Array::length() and Sparse::length() in favour of ::numel().
Carnë Draug <carandraug@octave.org>
parents: 19697
diff changeset
412 octave_idx_type a_len = a.numel ();
7789
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diff changeset
413
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parents:
diff changeset
414 if (len != a_len)
22327
d0562b3159c7 move more classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22323
diff changeset
415 octave::err_nonconformant ("operator *", len, a_len);
21120
499b851fbfae Replace pattern if/err_XXX/else/code with if/err_XXX/ code.
Rik <rik@octave.org>
parents: 21100
diff changeset
416
499b851fbfae Replace pattern if/err_XXX/else/code with if/err_XXX/ code.
Rik <rik@octave.org>
parents: 21100
diff changeset
417 if (len != 0)
22402
4caa7b28d183 maint: Style check C++ code in liboctave/
Rik <rik@octave.org>
parents: 22327
diff changeset
418 F77_FUNC (xcdotu, XCDOTU) (len, F77_CONST_CMPLX_ARG (v.data ()), 1,
4caa7b28d183 maint: Style check C++ code in liboctave/
Rik <rik@octave.org>
parents: 22327
diff changeset
419 F77_CONST_CMPLX_ARG (a.data ()), 1, F77_CMPLX_ARG (&retval));
7789
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diff changeset
420
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diff changeset
421 return retval;
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parents:
diff changeset
422 }
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diff changeset
423
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parents:
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424 // other operations
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parents:
diff changeset
425
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426 FloatComplexRowVector
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parents:
diff changeset
427 linspace (const FloatComplex& x1, const FloatComplex& x2, octave_idx_type n)
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parents:
diff changeset
428 {
20466
16b9ec39ff46 Return empty matrix when linspace called with 0 points (bug #45820)
Rik <rik@octave.org>
parents: 20232
diff changeset
429 NoAlias<FloatComplexRowVector> retval;
9653
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9550
diff changeset
430
20466
16b9ec39ff46 Return empty matrix when linspace called with 0 points (bug #45820)
Rik <rik@octave.org>
parents: 20232
diff changeset
431 if (n < 1)
16b9ec39ff46 Return empty matrix when linspace called with 0 points (bug #45820)
Rik <rik@octave.org>
parents: 20232
diff changeset
432 return retval;
16b9ec39ff46 Return empty matrix when linspace called with 0 points (bug #45820)
Rik <rik@octave.org>
parents: 20232
diff changeset
433 else
16b9ec39ff46 Return empty matrix when linspace called with 0 points (bug #45820)
Rik <rik@octave.org>
parents: 20232
diff changeset
434 retval.clear (n);
16b9ec39ff46 Return empty matrix when linspace called with 0 points (bug #45820)
Rik <rik@octave.org>
parents: 20232
diff changeset
435
16b9ec39ff46 Return empty matrix when linspace called with 0 points (bug #45820)
Rik <rik@octave.org>
parents: 20232
diff changeset
436 retval(0) = x1;
7789
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parents:
diff changeset
437
9653
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9550
diff changeset
438 FloatComplex delta = (x2 - x1) / (n - 1.0f);
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9550
diff changeset
439 for (octave_idx_type i = 1; i < n-1; i++)
9658
3429c956de6f extend linspace & fix up liboctave rewrite
Jaroslav Hajek <highegg@gmail.com>
parents: 9653
diff changeset
440 retval(i) = x1 + static_cast<float> (i)*delta;
20466
16b9ec39ff46 Return empty matrix when linspace called with 0 points (bug #45820)
Rik <rik@octave.org>
parents: 20232
diff changeset
441
9653
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9550
diff changeset
442 retval(n-1) = x2;
7789
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diff changeset
443
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444 return retval;
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parents:
diff changeset
445 }