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annotate liboctave/fCRowVector.cc @ 14393:ba4d6343524b stable release-3-6-1

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Version 3.6.1 released. * configure.ac (AC_INIT): Version is now 3.6.1. (OCTAVE_RELEASE_DATE): Release date is now 2012-02-22.
author John W. Eaton <jwe@octave.org>
date Wed, 22 Feb 2012 14:39:41 -0500
parents 72c96de7a403
children 460a3c6d8bf1
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1 // RowVector manipulations.
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2 /*
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3
14138
72c96de7a403 maint: update copyright notices for 2012
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4 Copyright (C) 1994-2012 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 #ifdef 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 "f77-fcn.h"
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32 #include "functor.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 // Fortran functions we call.
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39
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40 extern "C"
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41 {
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42 F77_RET_T
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43 F77_FUNC (cgemv, CGEMV) (F77_CONST_CHAR_ARG_DECL,
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44 const octave_idx_type&, const octave_idx_type&,
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45 const FloatComplex&, const FloatComplex*,
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46 const octave_idx_type&, const FloatComplex*,
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47 const octave_idx_type&, const FloatComplex&,
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48 FloatComplex*, const octave_idx_type&
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49 F77_CHAR_ARG_LEN_DECL);
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50
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51 F77_RET_T
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52 F77_FUNC (xcdotu, XCDOTU) (const octave_idx_type&, const FloatComplex*,
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53 const octave_idx_type&, const FloatComplex*,
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54 const octave_idx_type&, FloatComplex&);
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55 }
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56
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57 // FloatComplex Row Vector class
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58
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59 bool
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60 FloatComplexRowVector::operator == (const FloatComplexRowVector& a) const
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61 {
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62 octave_idx_type len = length ();
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63 if (len != a.length ())
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64 return 0;
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65 return mx_inline_equal (len, data (), a.data ());
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66 }
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67
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68 bool
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69 FloatComplexRowVector::operator != (const FloatComplexRowVector& a) const
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70 {
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71 return !(*this == a);
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72 }
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73
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74 // destructive insert/delete/reorder operations
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75
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76 FloatComplexRowVector&
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77 FloatComplexRowVector::insert (const FloatRowVector& a, octave_idx_type c)
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78 {
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79 octave_idx_type a_len = a.length ();
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80
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81 if (c < 0 || c + a_len > length ())
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82 {
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83 (*current_liboctave_error_handler) ("range error for insert");
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84 return *this;
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85 }
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86
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87 if (a_len > 0)
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88 {
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89 make_unique ();
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90
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91 for (octave_idx_type i = 0; i < a_len; i++)
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92 xelem (c+i) = a.elem (i);
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93 }
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94
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95 return *this;
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96 }
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97
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98 FloatComplexRowVector&
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99 FloatComplexRowVector::insert (const FloatComplexRowVector& a, octave_idx_type c)
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100 {
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101 octave_idx_type a_len = a.length ();
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102
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103 if (c < 0 || c + a_len > length ())
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104 {
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105 (*current_liboctave_error_handler) ("range error for insert");
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106 return *this;
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107 }
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108
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109 if (a_len > 0)
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110 {
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111 make_unique ();
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112
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113 for (octave_idx_type i = 0; i < a_len; i++)
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114 xelem (c+i) = a.elem (i);
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115 }
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116
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117 return *this;
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118 }
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119
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120 FloatComplexRowVector&
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121 FloatComplexRowVector::fill (float val)
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122 {
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123 octave_idx_type len = length ();
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124
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125 if (len > 0)
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126 {
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127 make_unique ();
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128
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129 for (octave_idx_type i = 0; i < len; i++)
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130 xelem (i) = val;
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131 }
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132
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133 return *this;
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134 }
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135
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136 FloatComplexRowVector&
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137 FloatComplexRowVector::fill (const FloatComplex& val)
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138 {
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139 octave_idx_type len = length ();
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140
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141 if (len > 0)
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142 {
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143 make_unique ();
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144
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145 for (octave_idx_type i = 0; i < len; i++)
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146 xelem (i) = val;
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147 }
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148
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149 return *this;
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150 }
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151
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152 FloatComplexRowVector&
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153 FloatComplexRowVector::fill (float val, octave_idx_type c1, octave_idx_type c2)
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154 {
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155 octave_idx_type len = length ();
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156
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157 if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len)
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158 {
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159 (*current_liboctave_error_handler) ("range error for fill");
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160 return *this;
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161 }
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162
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163 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; }
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164
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165 if (c2 >= c1)
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166 {
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167 make_unique ();
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168
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169 for (octave_idx_type i = c1; i <= c2; i++)
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170 xelem (i) = val;
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171 }
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172
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173 return *this;
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174 }
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175
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176 FloatComplexRowVector&
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177 FloatComplexRowVector::fill (const FloatComplex& val, octave_idx_type c1, octave_idx_type c2)
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178 {
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179 octave_idx_type len = length ();
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180
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181 if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len)
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182 {
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183 (*current_liboctave_error_handler) ("range error for fill");
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184 return *this;
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185 }
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186
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187 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; }
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188
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189 if (c2 >= c1)
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190 {
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191 make_unique ();
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192
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193 for (octave_idx_type i = c1; i <= c2; i++)
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194 xelem (i) = val;
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195 }
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196
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197 return *this;
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198 }
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199
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200 FloatComplexRowVector
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201 FloatComplexRowVector::append (const FloatRowVector& a) const
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202 {
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203 octave_idx_type len = length ();
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204 octave_idx_type nc_insert = len;
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205 FloatComplexRowVector retval (len + a.length ());
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206 retval.insert (*this, 0);
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207 retval.insert (a, nc_insert);
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208 return retval;
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209 }
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210
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211 FloatComplexRowVector
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212 FloatComplexRowVector::append (const FloatComplexRowVector& a) const
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213 {
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214 octave_idx_type len = length ();
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215 octave_idx_type nc_insert = len;
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216 FloatComplexRowVector retval (len + a.length ());
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217 retval.insert (*this, 0);
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218 retval.insert (a, nc_insert);
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219 return retval;
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220 }
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221
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222 FloatComplexColumnVector
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223 FloatComplexRowVector::hermitian (void) const
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224 {
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225 return MArray<FloatComplex>::hermitian (std::conj);
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226 }
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227
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228 FloatComplexColumnVector
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229 FloatComplexRowVector::transpose (void) const
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230 {
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231 return MArray<FloatComplex>::transpose ();
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232 }
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233
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234 FloatComplexRowVector
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235 conj (const FloatComplexRowVector& a)
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236 {
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237 return do_mx_unary_map<FloatComplex, FloatComplex, std::conj<float> > (a);
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238 }
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239
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240 // resize is the destructive equivalent for this one
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241
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242 FloatComplexRowVector
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243 FloatComplexRowVector::extract (octave_idx_type c1, octave_idx_type c2) const
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244 {
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245 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; }
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246
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247 octave_idx_type new_c = c2 - c1 + 1;
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248
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249 FloatComplexRowVector result (new_c);
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250
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251 for (octave_idx_type i = 0; i < new_c; i++)
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252 result.elem (i) = elem (c1+i);
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253
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254 return result;
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255 }
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256
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257 FloatComplexRowVector
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258 FloatComplexRowVector::extract_n (octave_idx_type r1, octave_idx_type n) const
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259 {
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260 FloatComplexRowVector result (n);
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261
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262 for (octave_idx_type i = 0; i < n; i++)
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263 result.elem (i) = elem (r1+i);
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264
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265 return result;
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266 }
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267
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268 // row vector by row vector -> row vector operations
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269
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270 FloatComplexRowVector&
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271 FloatComplexRowVector::operator += (const FloatRowVector& a)
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272 {
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273 octave_idx_type len = length ();
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274
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275 octave_idx_type a_len = a.length ();
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276
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277 if (len != a_len)
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278 {
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279 gripe_nonconformant ("operator +=", len, a_len);
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280 return *this;
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281 }
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282
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283 if (len == 0)
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284 return *this;
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285
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286 FloatComplex *d = fortran_vec (); // Ensures only one reference to my privates!
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287
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288 mx_inline_add2 (len, d, a.data ());
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289 return *this;
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290 }
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291
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292 FloatComplexRowVector&
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293 FloatComplexRowVector::operator -= (const FloatRowVector& a)
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294 {
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295 octave_idx_type len = length ();
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296
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297 octave_idx_type a_len = a.length ();
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298
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299 if (len != a_len)
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300 {
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301 gripe_nonconformant ("operator -=", len, a_len);
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302 return *this;
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303 }
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304
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305 if (len == 0)
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306 return *this;
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307
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308 FloatComplex *d = fortran_vec (); // Ensures only one reference to my privates!
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309
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310 mx_inline_sub2 (len, d, a.data ());
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311 return *this;
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312 }
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313
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314 // row vector by matrix -> row vector
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315
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316 FloatComplexRowVector
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317 operator * (const FloatComplexRowVector& v, const FloatComplexMatrix& a)
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318 {
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319 FloatComplexRowVector retval;
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320
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321 octave_idx_type len = v.length ();
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322
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323 octave_idx_type a_nr = a.rows ();
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324 octave_idx_type a_nc = a.cols ();
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325
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326 if (a_nr != len)
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327 gripe_nonconformant ("operator *", 1, len, a_nr, a_nc);
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328 else
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329 {
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330 if (len == 0)
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331 retval.resize (a_nc, 0.0);
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332 else
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333 {
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334 // Transpose A to form A'*x == (x'*A)'
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335
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336 octave_idx_type ld = a_nr;
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337
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338 retval.resize (a_nc);
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339 FloatComplex *y = retval.fortran_vec ();
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340
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341 F77_XFCN (cgemv, CGEMV, (F77_CONST_CHAR_ARG2 ("T", 1),
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342 a_nr, a_nc, 1.0, a.data (),
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343 ld, v.data (), 1, 0.0, y, 1
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344 F77_CHAR_ARG_LEN (1)));
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345 }
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346 }
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347
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348 return retval;
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349 }
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350
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351 FloatComplexRowVector
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352 operator * (const FloatRowVector& v, const FloatComplexMatrix& a)
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353 {
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354 FloatComplexRowVector tmp (v);
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355 return tmp * a;
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356 }
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357
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358 // other operations
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359
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360 FloatComplex
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361 FloatComplexRowVector::min (void) const
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362 {
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363 octave_idx_type len = length ();
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364 if (len == 0)
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365 return FloatComplex (0.0);
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366
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367 FloatComplex res = elem (0);
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368 float absres = std::abs (res);
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369
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370 for (octave_idx_type i = 1; i < len; i++)
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371 if (std::abs (elem (i)) < absres)
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372 {
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373 res = elem (i);
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374 absres = std::abs (res);
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375 }
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376
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377 return res;
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378 }
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379
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380 FloatComplex
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381 FloatComplexRowVector::max (void) const
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382 {
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383 octave_idx_type len = length ();
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384 if (len == 0)
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385 return FloatComplex (0.0);
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386
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387 FloatComplex res = elem (0);
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388 float absres = std::abs (res);
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389
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390 for (octave_idx_type i = 1; i < len; i++)
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391 if (std::abs (elem (i)) > absres)
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392 {
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393 res = elem (i);
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394 absres = std::abs (res);
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395 }
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396
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397 return res;
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398 }
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399
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400 // i/o
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401
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402 std::ostream&
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403 operator << (std::ostream& os, const FloatComplexRowVector& a)
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404 {
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405 // int field_width = os.precision () + 7;
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406 for (octave_idx_type i = 0; i < a.length (); i++)
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407 os << " " /* setw (field_width) */ << a.elem (i);
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408 return os;
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409 }
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410
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411 std::istream&
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412 operator >> (std::istream& is, FloatComplexRowVector& a)
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413 {
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414 octave_idx_type len = a.length();
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415
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416 if (len > 0)
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417 {
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418 FloatComplex tmp;
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419 for (octave_idx_type i = 0; i < len; i++)
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420 {
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421 is >> tmp;
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422 if (is)
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423 a.elem (i) = tmp;
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424 else
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425 break;
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426 }
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427 }
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428 return is;
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429 }
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430
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431 // row vector by column vector -> scalar
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432
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433 // row vector by column vector -> scalar
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434
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435 FloatComplex
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436 operator * (const FloatComplexRowVector& v, const FloatColumnVector& a)
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437 {
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438 FloatComplexColumnVector tmp (a);
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439 return v * tmp;
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440 }
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441
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442 FloatComplex
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443 operator * (const FloatComplexRowVector& v, const FloatComplexColumnVector& a)
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444 {
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445 FloatComplex retval (0.0, 0.0);
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446
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447 octave_idx_type len = v.length ();
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448
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449 octave_idx_type a_len = a.length ();
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450
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451 if (len != a_len)
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452 gripe_nonconformant ("operator *", len, a_len);
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453 else if (len != 0)
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454 F77_FUNC (xcdotu, XCDOTU) (len, v.data (), 1, a.data (), 1, retval);
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455
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456 return retval;
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457 }
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458
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459 // other operations
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diff changeset
460
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461 FloatComplexRowVector
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462 linspace (const FloatComplex& x1, const FloatComplex& x2, octave_idx_type n)
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463 {
9653
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diff changeset
464 if (n < 1) n = 1;
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465
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466 NoAlias<FloatComplexRowVector> retval (n);
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467
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468 FloatComplex delta = (x2 - x1) / (n - 1.0f);
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469 retval(0) = x1;
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470 for (octave_idx_type i = 1; i < n-1; i++)
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471 retval(i) = x1 + static_cast<float> (i)*delta;
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472 retval(n-1) = x2;
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473
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474 return retval;
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475 }