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annotate liboctave/array/fCRowVector.cc @ 20174:d20dd211cc89

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Enable float truncation by default for octave builds. * NEWS: Announce change. * configure.ac: Change configure option to --disable-float-truncate, and enable float truncation by default.
author Rik <rik@octave.org>
date Thu, 19 Mar 2015 07:00:11 -0700
parents 4197fc428c7d
children a9574e3c6e9e
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1 // RowVector manipulations.
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2 /*
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3
19898
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4 Copyright (C) 1994-2015 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,
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100 octave_idx_type c)
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101 {
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102 octave_idx_type a_len = a.length ();
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103
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104 if (c < 0 || c + a_len > length ())
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105 {
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106 (*current_liboctave_error_handler) ("range error for insert");
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107 return *this;
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108 }
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109
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110 if (a_len > 0)
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111 {
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112 make_unique ();
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113
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114 for (octave_idx_type i = 0; i < a_len; i++)
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115 xelem (c+i) = a.elem (i);
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116 }
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117
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118 return *this;
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119 }
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120
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121 FloatComplexRowVector&
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122 FloatComplexRowVector::fill (float val)
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123 {
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124 octave_idx_type len = length ();
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125
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126 if (len > 0)
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127 {
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128 make_unique ();
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129
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130 for (octave_idx_type i = 0; i < len; i++)
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131 xelem (i) = val;
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132 }
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133
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134 return *this;
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135 }
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136
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137 FloatComplexRowVector&
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138 FloatComplexRowVector::fill (const FloatComplex& val)
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139 {
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140 octave_idx_type len = length ();
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141
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142 if (len > 0)
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143 {
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144 make_unique ();
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145
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146 for (octave_idx_type i = 0; i < len; i++)
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147 xelem (i) = val;
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148 }
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149
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150 return *this;
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151 }
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152
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153 FloatComplexRowVector&
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154 FloatComplexRowVector::fill (float val, octave_idx_type c1, octave_idx_type c2)
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155 {
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156 octave_idx_type len = length ();
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157
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158 if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len)
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159 {
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160 (*current_liboctave_error_handler) ("range error for fill");
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161 return *this;
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162 }
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163
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164 if (c1 > c2) { std::swap (c1, c2); }
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165
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166 if (c2 >= c1)
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167 {
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168 make_unique ();
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169
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170 for (octave_idx_type i = c1; i <= c2; i++)
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171 xelem (i) = val;
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172 }
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173
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174 return *this;
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175 }
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176
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177 FloatComplexRowVector&
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178 FloatComplexRowVector::fill (const FloatComplex& val,
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179 octave_idx_type c1, octave_idx_type c2)
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180 {
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181 octave_idx_type len = length ();
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182
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183 if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len)
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184 {
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185 (*current_liboctave_error_handler) ("range error for fill");
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186 return *this;
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187 }
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188
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189 if (c1 > c2) { std::swap (c1, c2); }
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190
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191 if (c2 >= c1)
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192 {
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193 make_unique ();
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194
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195 for (octave_idx_type i = c1; i <= c2; i++)
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196 xelem (i) = val;
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197 }
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198
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199 return *this;
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200 }
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201
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202 FloatComplexRowVector
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203 FloatComplexRowVector::append (const FloatRowVector& a) const
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204 {
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205 octave_idx_type len = length ();
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206 octave_idx_type nc_insert = len;
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207 FloatComplexRowVector retval (len + a.length ());
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208 retval.insert (*this, 0);
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209 retval.insert (a, nc_insert);
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210 return retval;
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211 }
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212
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213 FloatComplexRowVector
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214 FloatComplexRowVector::append (const FloatComplexRowVector& a) const
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215 {
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216 octave_idx_type len = length ();
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217 octave_idx_type nc_insert = len;
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218 FloatComplexRowVector retval (len + a.length ());
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219 retval.insert (*this, 0);
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220 retval.insert (a, nc_insert);
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221 return retval;
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222 }
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223
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224 FloatComplexColumnVector
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225 FloatComplexRowVector::hermitian (void) const
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226 {
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227 return MArray<FloatComplex>::hermitian (std::conj);
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228 }
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229
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230 FloatComplexColumnVector
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231 FloatComplexRowVector::transpose (void) const
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232 {
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233 return MArray<FloatComplex>::transpose ();
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234 }
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235
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236 FloatComplexRowVector
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237 conj (const FloatComplexRowVector& a)
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238 {
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239 return do_mx_unary_map<FloatComplex, FloatComplex, std::conj<float> > (a);
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240 }
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241
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242 // resize is the destructive equivalent for this one
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243
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244 FloatComplexRowVector
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245 FloatComplexRowVector::extract (octave_idx_type c1, octave_idx_type c2) const
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246 {
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247 if (c1 > c2) { std::swap (c1, c2); }
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248
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249 octave_idx_type new_c = c2 - c1 + 1;
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250
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251 FloatComplexRowVector result (new_c);
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252
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253 for (octave_idx_type i = 0; i < new_c; i++)
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254 result.elem (i) = elem (c1+i);
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255
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256 return result;
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257 }
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258
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259 FloatComplexRowVector
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260 FloatComplexRowVector::extract_n (octave_idx_type r1, octave_idx_type n) const
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261 {
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262 FloatComplexRowVector result (n);
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263
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264 for (octave_idx_type i = 0; i < n; i++)
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265 result.elem (i) = elem (r1+i);
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266
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267 return result;
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268 }
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269
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270 // row vector by row vector -> row vector operations
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271
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272 FloatComplexRowVector&
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273 FloatComplexRowVector::operator += (const FloatRowVector& a)
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274 {
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275 octave_idx_type len = length ();
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276
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277 octave_idx_type a_len = a.length ();
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278
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279 if (len != a_len)
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280 {
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281 gripe_nonconformant ("operator +=", len, a_len);
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282 return *this;
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283 }
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284
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285 if (len == 0)
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286 return *this;
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287
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288 FloatComplex *d = fortran_vec (); // Ensures only 1 reference to my privates!
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289
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290 mx_inline_add2 (len, d, a.data ());
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291 return *this;
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292 }
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293
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294 FloatComplexRowVector&
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295 FloatComplexRowVector::operator -= (const FloatRowVector& a)
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296 {
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297 octave_idx_type len = length ();
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298
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299 octave_idx_type a_len = a.length ();
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300
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301 if (len != a_len)
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302 {
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303 gripe_nonconformant ("operator -=", len, a_len);
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304 return *this;
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305 }
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306
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307 if (len == 0)
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308 return *this;
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309
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310 FloatComplex *d = fortran_vec (); // Ensures only 1 reference to my privates!
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311
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312 mx_inline_sub2 (len, d, a.data ());
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313 return *this;
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314 }
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315
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316 // row vector by matrix -> row vector
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317
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318 FloatComplexRowVector
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319 operator * (const FloatComplexRowVector& v, const FloatComplexMatrix& a)
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320 {
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321 FloatComplexRowVector retval;
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322
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323 octave_idx_type len = v.length ();
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324
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325 octave_idx_type a_nr = a.rows ();
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326 octave_idx_type a_nc = a.cols ();
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327
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328 if (a_nr != len)
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329 gripe_nonconformant ("operator *", 1, len, a_nr, a_nc);
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330 else
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331 {
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332 if (len == 0)
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diff changeset
333 retval.resize (a_nc, 0.0);
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334 else
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335 {
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336 // Transpose A to form A'*x == (x'*A)'
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337
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diff changeset
338 octave_idx_type ld = a_nr;
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339
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340 retval.resize (a_nc);
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341 FloatComplex *y = retval.fortran_vec ();
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342
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343 F77_XFCN (cgemv, CGEMV, (F77_CONST_CHAR_ARG2 ("T", 1),
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344 a_nr, a_nc, 1.0, a.data (),
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345 ld, v.data (), 1, 0.0, y, 1
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346 F77_CHAR_ARG_LEN (1)));
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347 }
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348 }
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349
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350 return retval;
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351 }
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352
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353 FloatComplexRowVector
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354 operator * (const FloatRowVector& v, const FloatComplexMatrix& a)
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355 {
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356 FloatComplexRowVector tmp (v);
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357 return tmp * a;
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358 }
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359
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360 // other operations
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361
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362 FloatComplex
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363 FloatComplexRowVector::min (void) const
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364 {
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365 octave_idx_type len = length ();
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366 if (len == 0)
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367 return FloatComplex (0.0);
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368
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369 FloatComplex res = elem (0);
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370 float absres = std::abs (res);
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371
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372 for (octave_idx_type i = 1; i < len; i++)
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373 if (std::abs (elem (i)) < absres)
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374 {
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375 res = elem (i);
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376 absres = std::abs (res);
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377 }
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378
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379 return res;
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380 }
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381
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382 FloatComplex
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383 FloatComplexRowVector::max (void) const
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384 {
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385 octave_idx_type len = length ();
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386 if (len == 0)
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387 return FloatComplex (0.0);
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388
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389 FloatComplex res = elem (0);
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390 float absres = std::abs (res);
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391
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392 for (octave_idx_type i = 1; i < len; i++)
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393 if (std::abs (elem (i)) > absres)
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394 {
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395 res = elem (i);
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396 absres = std::abs (res);
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397 }
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398
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399 return res;
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400 }
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401
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402 // i/o
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403
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404 std::ostream&
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405 operator << (std::ostream& os, const FloatComplexRowVector& a)
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406 {
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407 // int field_width = os.precision () + 7;
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408 for (octave_idx_type i = 0; i < a.length (); i++)
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409 os << " " /* setw (field_width) */ << a.elem (i);
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410 return os;
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411 }
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412
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413 std::istream&
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414 operator >> (std::istream& is, FloatComplexRowVector& a)
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415 {
14846
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
416 octave_idx_type len = a.length ();
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417
8999
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parents: 8920
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418 if (len > 0)
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419 {
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420 FloatComplex tmp;
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421 for (octave_idx_type i = 0; i < len; i++)
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422 {
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423 is >> tmp;
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424 if (is)
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425 a.elem (i) = tmp;
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426 else
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427 break;
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428 }
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429 }
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430 return is;
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431 }
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432
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433 // row vector by column vector -> scalar
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parents:
diff changeset
434
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435 // row vector by column vector -> scalar
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436
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437 FloatComplex
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438 operator * (const FloatComplexRowVector& v, const FloatColumnVector& a)
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parents:
diff changeset
439 {
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440 FloatComplexColumnVector tmp (a);
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441 return v * tmp;
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442 }
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diff changeset
443
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diff changeset
444 FloatComplex
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diff changeset
445 operator * (const FloatComplexRowVector& v, const FloatComplexColumnVector& a)
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446 {
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447 FloatComplex retval (0.0, 0.0);
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448
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449 octave_idx_type len = v.length ();
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450
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451 octave_idx_type a_len = a.length ();
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452
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453 if (len != a_len)
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454 gripe_nonconformant ("operator *", len, a_len);
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455 else if (len != 0)
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456 F77_FUNC (xcdotu, XCDOTU) (len, v.data (), 1, a.data (), 1, retval);
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parents:
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457
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458 return retval;
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459 }
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diff changeset
460
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parents:
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461 // other operations
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diff changeset
462
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463 FloatComplexRowVector
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diff changeset
464 linspace (const FloatComplex& x1, const FloatComplex& x2, octave_idx_type n)
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465 {
9653
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9550
diff changeset
466 if (n < 1) n = 1;
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diff changeset
467
e087d7c77ff9 improve linspace in liboctave
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parents: 9550
diff changeset
468 NoAlias<FloatComplexRowVector> retval (n);
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469
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diff changeset
470 FloatComplex delta = (x2 - x1) / (n - 1.0f);
9658
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parents: 9653
diff changeset
471 retval(0) = x1;
9653
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parents: 9550
diff changeset
472 for (octave_idx_type i = 1; i < n-1; i++)
9658
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parents: 9653
diff changeset
473 retval(i) = x1 + static_cast<float> (i)*delta;
9653
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parents: 9550
diff changeset
474 retval(n-1) = x2;
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475
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476 return retval;
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parents:
diff changeset
477 }