Mercurial > octave-nkf
annotate liboctave/fCRowVector.cc @ 11518:141b3fb5cef7
style fixes
author | John W. Eaton <jwe@octave.org> |
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date | Thu, 13 Jan 2011 16:52:30 -0500 |
parents | a0728e81ed25 |
children | fd0a3ac60b0e |
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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, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, |
8920 | 5 2004, 2005, 2006, 2007, 2008 John W. Eaton |
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6 |
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7 This file is part of Octave. |
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8 |
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9 Octave is free software; you can redistribute it and/or modify it |
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10 under the terms of the GNU General Public License as published by the |
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11 Free Software Foundation; either version 3 of the License, or (at your |
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12 option) any later version. |
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13 |
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14 Octave is distributed in the hope that it will be useful, but WITHOUT |
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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17 for more details. |
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18 |
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19 You should have received a copy of the GNU General Public License |
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20 along with Octave; see the file COPYING. If not, see |
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21 <http://www.gnu.org/licenses/>. |
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22 |
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23 */ |
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24 |
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25 #ifdef HAVE_CONFIG_H |
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26 #include <config.h> |
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27 #endif |
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28 |
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29 #include <iostream> |
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30 |
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31 #include "Array-util.h" |
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32 #include "f77-fcn.h" |
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33 #include "functor.h" |
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34 #include "lo-error.h" |
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35 #include "mx-base.h" |
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36 #include "mx-inlines.cc" |
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37 #include "oct-cmplx.h" |
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38 |
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39 // Fortran functions we call. |
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40 |
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41 extern "C" |
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42 { |
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43 F77_RET_T |
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44 F77_FUNC (cgemv, CGEMV) (F77_CONST_CHAR_ARG_DECL, |
11518 | 45 const octave_idx_type&, const octave_idx_type&, |
46 const FloatComplex&, const FloatComplex*, | |
47 const octave_idx_type&, const FloatComplex*, | |
48 const octave_idx_type&, const FloatComplex&, | |
49 FloatComplex*, const octave_idx_type& | |
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50 F77_CHAR_ARG_LEN_DECL); |
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51 |
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52 F77_RET_T |
11518 | 53 F77_FUNC (xcdotu, XCDOTU) (const octave_idx_type&, const FloatComplex*, |
54 const octave_idx_type&, const FloatComplex*, | |
55 const octave_idx_type&, FloatComplex&); | |
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56 } |
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57 |
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58 // FloatComplex Row Vector class |
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59 |
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60 bool |
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61 FloatComplexRowVector::operator == (const FloatComplexRowVector& a) const |
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62 { |
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63 octave_idx_type len = length (); |
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64 if (len != a.length ()) |
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65 return 0; |
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66 return mx_inline_equal (len, data (), a.data ()); |
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67 } |
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68 |
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69 bool |
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70 FloatComplexRowVector::operator != (const FloatComplexRowVector& a) const |
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71 { |
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72 return !(*this == a); |
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73 } |
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74 |
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75 // destructive insert/delete/reorder operations |
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76 |
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77 FloatComplexRowVector& |
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78 FloatComplexRowVector::insert (const FloatRowVector& a, octave_idx_type c) |
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79 { |
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80 octave_idx_type a_len = a.length (); |
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81 |
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82 if (c < 0 || c + a_len > length ()) |
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83 { |
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84 (*current_liboctave_error_handler) ("range error for insert"); |
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85 return *this; |
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86 } |
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87 |
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88 if (a_len > 0) |
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89 { |
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90 make_unique (); |
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91 |
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92 for (octave_idx_type i = 0; i < a_len; i++) |
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93 xelem (c+i) = a.elem (i); |
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94 } |
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95 |
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96 return *this; |
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97 } |
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98 |
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99 FloatComplexRowVector& |
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100 FloatComplexRowVector::insert (const FloatComplexRowVector& a, 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) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
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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, octave_idx_type c1, octave_idx_type c2) |
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179 { |
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180 octave_idx_type len = length (); |
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181 |
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182 if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len) |
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183 { |
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184 (*current_liboctave_error_handler) ("range error for fill"); |
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185 return *this; |
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186 } |
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187 |
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188 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
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189 |
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190 if (c2 >= c1) |
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191 { |
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192 make_unique (); |
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193 |
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194 for (octave_idx_type i = c1; i <= c2; i++) |
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195 xelem (i) = val; |
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196 } |
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197 |
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198 return *this; |
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199 } |
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200 |
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201 FloatComplexRowVector |
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202 FloatComplexRowVector::append (const FloatRowVector& a) const |
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203 { |
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204 octave_idx_type len = length (); |
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205 octave_idx_type nc_insert = len; |
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206 FloatComplexRowVector retval (len + a.length ()); |
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207 retval.insert (*this, 0); |
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208 retval.insert (a, nc_insert); |
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209 return retval; |
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210 } |
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211 |
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212 FloatComplexRowVector |
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213 FloatComplexRowVector::append (const FloatComplexRowVector& a) const |
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214 { |
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215 octave_idx_type len = length (); |
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216 octave_idx_type nc_insert = len; |
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217 FloatComplexRowVector retval (len + a.length ()); |
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218 retval.insert (*this, 0); |
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219 retval.insert (a, nc_insert); |
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220 return retval; |
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221 } |
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222 |
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223 FloatComplexColumnVector |
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224 FloatComplexRowVector::hermitian (void) const |
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225 { |
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226 return MArray<FloatComplex>::hermitian (std::conj); |
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227 } |
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228 |
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229 FloatComplexColumnVector |
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230 FloatComplexRowVector::transpose (void) const |
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231 { |
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232 return MArray<FloatComplex>::transpose (); |
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233 } |
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234 |
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235 FloatComplexRowVector |
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236 conj (const FloatComplexRowVector& a) |
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237 { |
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238 return do_mx_unary_map<FloatComplex, FloatComplex, std::conj> (a); |
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239 } |
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240 |
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241 // resize is the destructive equivalent for this one |
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242 |
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243 FloatComplexRowVector |
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244 FloatComplexRowVector::extract (octave_idx_type c1, octave_idx_type c2) const |
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245 { |
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246 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
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247 |
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248 octave_idx_type new_c = c2 - c1 + 1; |
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249 |
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250 FloatComplexRowVector result (new_c); |
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251 |
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252 for (octave_idx_type i = 0; i < new_c; i++) |
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253 result.elem (i) = elem (c1+i); |
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254 |
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255 return result; |
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256 } |
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257 |
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258 FloatComplexRowVector |
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259 FloatComplexRowVector::extract_n (octave_idx_type r1, octave_idx_type n) const |
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260 { |
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261 FloatComplexRowVector result (n); |
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262 |
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263 for (octave_idx_type i = 0; i < n; i++) |
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264 result.elem (i) = elem (r1+i); |
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265 |
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266 return result; |
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267 } |
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268 |
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269 // row vector by row vector -> row vector operations |
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270 |
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271 FloatComplexRowVector& |
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272 FloatComplexRowVector::operator += (const FloatRowVector& a) |
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273 { |
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274 octave_idx_type len = length (); |
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275 |
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276 octave_idx_type a_len = a.length (); |
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277 |
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278 if (len != a_len) |
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279 { |
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280 gripe_nonconformant ("operator +=", len, a_len); |
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281 return *this; |
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282 } |
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283 |
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284 if (len == 0) |
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285 return *this; |
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286 |
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287 FloatComplex *d = fortran_vec (); // Ensures only one reference to my privates! |
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288 |
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289 mx_inline_add2 (len, d, a.data ()); |
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290 return *this; |
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291 } |
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292 |
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293 FloatComplexRowVector& |
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294 FloatComplexRowVector::operator -= (const FloatRowVector& a) |
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295 { |
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296 octave_idx_type len = length (); |
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297 |
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298 octave_idx_type a_len = a.length (); |
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299 |
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300 if (len != a_len) |
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301 { |
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302 gripe_nonconformant ("operator -=", len, a_len); |
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303 return *this; |
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304 } |
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305 |
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306 if (len == 0) |
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307 return *this; |
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308 |
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309 FloatComplex *d = fortran_vec (); // Ensures only one reference to my privates! |
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310 |
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311 mx_inline_sub2 (len, d, a.data ()); |
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312 return *this; |
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313 } |
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314 |
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315 // row vector by matrix -> row vector |
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316 |
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317 FloatComplexRowVector |
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318 operator * (const FloatComplexRowVector& v, const FloatComplexMatrix& a) |
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319 { |
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320 FloatComplexRowVector retval; |
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321 |
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322 octave_idx_type len = v.length (); |
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323 |
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324 octave_idx_type a_nr = a.rows (); |
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325 octave_idx_type a_nc = a.cols (); |
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326 |
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327 if (a_nr != len) |
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328 gripe_nonconformant ("operator *", 1, len, a_nr, a_nc); |
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329 else |
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330 { |
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331 if (len == 0) |
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332 retval.resize (a_nc, 0.0); |
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333 else |
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334 { |
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335 // Transpose A to form A'*x == (x'*A)' |
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336 |
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337 octave_idx_type ld = a_nr; |
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338 |
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339 retval.resize (a_nc); |
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340 FloatComplex *y = retval.fortran_vec (); |
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341 |
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342 F77_XFCN (cgemv, CGEMV, (F77_CONST_CHAR_ARG2 ("T", 1), |
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343 a_nr, a_nc, 1.0, a.data (), |
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344 ld, v.data (), 1, 0.0, y, 1 |
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345 F77_CHAR_ARG_LEN (1))); |
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346 } |
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347 } |
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348 |
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349 return retval; |
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350 } |
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351 |
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352 FloatComplexRowVector |
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353 operator * (const FloatRowVector& v, const FloatComplexMatrix& a) |
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354 { |
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355 FloatComplexRowVector tmp (v); |
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356 return tmp * a; |
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357 } |
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358 |
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359 // other operations |
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360 |
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361 FloatComplex |
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362 FloatComplexRowVector::min (void) const |
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363 { |
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364 octave_idx_type len = length (); |
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365 if (len == 0) |
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366 return FloatComplex (0.0); |
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367 |
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368 FloatComplex res = elem (0); |
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369 float absres = std::abs (res); |
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370 |
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371 for (octave_idx_type i = 1; i < len; i++) |
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372 if (std::abs (elem (i)) < absres) |
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373 { |
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374 res = elem (i); |
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375 absres = std::abs (res); |
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376 } |
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377 |
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378 return res; |
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379 } |
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380 |
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381 FloatComplex |
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382 FloatComplexRowVector::max (void) const |
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383 { |
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384 octave_idx_type len = length (); |
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385 if (len == 0) |
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386 return FloatComplex (0.0); |
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387 |
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388 FloatComplex res = elem (0); |
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389 float absres = std::abs (res); |
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390 |
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391 for (octave_idx_type i = 1; i < len; i++) |
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392 if (std::abs (elem (i)) > absres) |
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393 { |
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394 res = elem (i); |
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395 absres = std::abs (res); |
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396 } |
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397 |
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398 return res; |
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399 } |
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400 |
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401 // i/o |
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402 |
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403 std::ostream& |
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404 operator << (std::ostream& os, const FloatComplexRowVector& a) |
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405 { |
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406 // int field_width = os.precision () + 7; |
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407 for (octave_idx_type i = 0; i < a.length (); i++) |
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408 os << " " /* setw (field_width) */ << a.elem (i); |
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409 return os; |
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410 } |
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411 |
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412 std::istream& |
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413 operator >> (std::istream& is, FloatComplexRowVector& a) |
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414 { |
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415 octave_idx_type len = a.length(); |
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416 |
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417 if (len > 0) |
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418 { |
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419 FloatComplex tmp; |
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420 for (octave_idx_type i = 0; i < len; i++) |
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421 { |
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422 is >> tmp; |
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423 if (is) |
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424 a.elem (i) = tmp; |
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425 else |
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426 break; |
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427 } |
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428 } |
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429 return is; |
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430 } |
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431 |
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432 // row vector by column vector -> scalar |
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433 |
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434 // row vector by column vector -> scalar |
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435 |
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436 FloatComplex |
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437 operator * (const FloatComplexRowVector& v, const FloatColumnVector& a) |
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438 { |
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439 FloatComplexColumnVector tmp (a); |
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440 return v * tmp; |
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441 } |
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442 |
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443 FloatComplex |
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444 operator * (const FloatComplexRowVector& v, const FloatComplexColumnVector& a) |
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445 { |
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446 FloatComplex retval (0.0, 0.0); |
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447 |
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448 octave_idx_type len = v.length (); |
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449 |
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450 octave_idx_type a_len = a.length (); |
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451 |
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452 if (len != a_len) |
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453 gripe_nonconformant ("operator *", len, a_len); |
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454 else if (len != 0) |
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455 F77_FUNC (xcdotu, XCDOTU) (len, v.data (), 1, a.data (), 1, retval); |
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456 |
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457 return retval; |
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458 } |
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459 |
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460 // other operations |
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461 |
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462 FloatComplexRowVector |
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463 linspace (const FloatComplex& x1, const FloatComplex& x2, octave_idx_type n) |
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464 { |
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465 if (n < 1) n = 1; |
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466 |
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467 NoAlias<FloatComplexRowVector> retval (n); |
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468 |
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469 FloatComplex delta = (x2 - x1) / (n - 1.0f); |
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470 retval(0) = x1; |
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471 for (octave_idx_type i = 1; i < n-1; i++) |
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472 retval(i) = x1 + static_cast<float> (i)*delta; |
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473 retval(n-1) = x2; |
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474 |
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475 return retval; |
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476 } |