Mercurial > octave
annotate liboctave/fCRowVector.cc @ 10350:12884915a8e4
merge MArray classes & improve Array interface
author | Jaroslav Hajek <highegg@gmail.com> |
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date | Sat, 23 Jan 2010 21:41:03 +0100 |
parents | 07ebe522dac2 |
children | a0728e81ed25 |
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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, |
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45 const octave_idx_type&, const octave_idx_type&, const FloatComplex&, |
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46 const FloatComplex*, const octave_idx_type&, const FloatComplex*, |
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47 const octave_idx_type&, const FloatComplex&, FloatComplex*, const octave_idx_type& |
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48 F77_CHAR_ARG_LEN_DECL); |
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49 |
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50 F77_RET_T |
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51 F77_FUNC (xcdotu, XCDOTU) (const octave_idx_type&, const FloatComplex*, const octave_idx_type&, |
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52 const FloatComplex*, const octave_idx_type&, FloatComplex&); |
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53 } |
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54 |
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55 // FloatComplex Row Vector class |
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56 |
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57 bool |
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58 FloatComplexRowVector::operator == (const FloatComplexRowVector& a) const |
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59 { |
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60 octave_idx_type len = length (); |
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61 if (len != a.length ()) |
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62 return 0; |
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63 return mx_inline_equal (len, data (), a.data ()); |
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64 } |
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65 |
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66 bool |
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67 FloatComplexRowVector::operator != (const FloatComplexRowVector& a) const |
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68 { |
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69 return !(*this == a); |
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70 } |
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71 |
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72 // destructive insert/delete/reorder operations |
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73 |
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74 FloatComplexRowVector& |
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75 FloatComplexRowVector::insert (const FloatRowVector& a, octave_idx_type c) |
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76 { |
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77 octave_idx_type a_len = a.length (); |
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78 |
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79 if (c < 0 || c + a_len > length ()) |
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80 { |
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81 (*current_liboctave_error_handler) ("range error for insert"); |
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82 return *this; |
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83 } |
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84 |
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85 if (a_len > 0) |
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86 { |
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87 make_unique (); |
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88 |
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89 for (octave_idx_type i = 0; i < a_len; i++) |
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90 xelem (c+i) = a.elem (i); |
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91 } |
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92 |
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93 return *this; |
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94 } |
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95 |
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96 FloatComplexRowVector& |
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97 FloatComplexRowVector::insert (const FloatComplexRowVector& a, octave_idx_type c) |
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98 { |
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99 octave_idx_type a_len = a.length (); |
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100 |
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101 if (c < 0 || c + a_len > length ()) |
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102 { |
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103 (*current_liboctave_error_handler) ("range error for insert"); |
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104 return *this; |
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105 } |
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106 |
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107 if (a_len > 0) |
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108 { |
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109 make_unique (); |
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110 |
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111 for (octave_idx_type i = 0; i < a_len; i++) |
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112 xelem (c+i) = a.elem (i); |
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113 } |
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114 |
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115 return *this; |
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116 } |
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117 |
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118 FloatComplexRowVector& |
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119 FloatComplexRowVector::fill (float val) |
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120 { |
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121 octave_idx_type len = length (); |
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122 |
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123 if (len > 0) |
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124 { |
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125 make_unique (); |
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126 |
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127 for (octave_idx_type i = 0; i < len; i++) |
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128 xelem (i) = val; |
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129 } |
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130 |
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131 return *this; |
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132 } |
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133 |
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134 FloatComplexRowVector& |
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135 FloatComplexRowVector::fill (const FloatComplex& val) |
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136 { |
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137 octave_idx_type len = length (); |
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138 |
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139 if (len > 0) |
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140 { |
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141 make_unique (); |
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142 |
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143 for (octave_idx_type i = 0; i < len; i++) |
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144 xelem (i) = val; |
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145 } |
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146 |
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147 return *this; |
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148 } |
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149 |
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150 FloatComplexRowVector& |
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151 FloatComplexRowVector::fill (float val, octave_idx_type c1, octave_idx_type c2) |
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152 { |
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153 octave_idx_type len = length (); |
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154 |
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155 if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len) |
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156 { |
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157 (*current_liboctave_error_handler) ("range error for fill"); |
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158 return *this; |
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159 } |
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160 |
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161 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
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162 |
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163 if (c2 >= c1) |
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164 { |
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165 make_unique (); |
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166 |
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167 for (octave_idx_type i = c1; i <= c2; i++) |
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168 xelem (i) = val; |
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169 } |
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170 |
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171 return *this; |
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172 } |
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173 |
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174 FloatComplexRowVector& |
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175 FloatComplexRowVector::fill (const FloatComplex& val, octave_idx_type c1, octave_idx_type c2) |
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176 { |
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177 octave_idx_type len = length (); |
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178 |
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179 if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len) |
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180 { |
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181 (*current_liboctave_error_handler) ("range error for fill"); |
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182 return *this; |
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183 } |
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184 |
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185 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
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186 |
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187 if (c2 >= c1) |
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188 { |
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189 make_unique (); |
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190 |
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191 for (octave_idx_type i = c1; i <= c2; i++) |
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192 xelem (i) = val; |
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193 } |
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194 |
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195 return *this; |
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196 } |
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197 |
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198 FloatComplexRowVector |
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199 FloatComplexRowVector::append (const FloatRowVector& a) const |
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200 { |
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201 octave_idx_type len = length (); |
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202 octave_idx_type nc_insert = len; |
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203 FloatComplexRowVector retval (len + a.length ()); |
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204 retval.insert (*this, 0); |
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205 retval.insert (a, nc_insert); |
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206 return retval; |
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207 } |
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208 |
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209 FloatComplexRowVector |
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210 FloatComplexRowVector::append (const FloatComplexRowVector& a) const |
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211 { |
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212 octave_idx_type len = length (); |
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213 octave_idx_type nc_insert = len; |
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214 FloatComplexRowVector retval (len + a.length ()); |
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215 retval.insert (*this, 0); |
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216 retval.insert (a, nc_insert); |
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217 return retval; |
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218 } |
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219 |
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220 FloatComplexColumnVector |
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221 FloatComplexRowVector::hermitian (void) const |
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222 { |
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223 return MArray<FloatComplex>::hermitian (std::conj); |
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224 } |
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225 |
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226 FloatComplexColumnVector |
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227 FloatComplexRowVector::transpose (void) const |
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228 { |
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229 return MArray<FloatComplex>::transpose (); |
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230 } |
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231 |
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232 FloatComplexRowVector |
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233 conj (const FloatComplexRowVector& a) |
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234 { |
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235 octave_idx_type a_len = a.length (); |
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236 FloatComplexRowVector retval; |
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237 if (a_len > 0) |
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238 retval = FloatComplexRowVector (mx_inline_conj_dup (a.data (), a_len), a_len); |
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239 return retval; |
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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) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
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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 one 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 one 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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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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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 { |
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416 octave_idx_type len = a.length(); |
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417 |
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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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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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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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443 |
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444 FloatComplex |
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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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457 |
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458 return retval; |
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459 } |
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460 |
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461 // other operations |
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462 |
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463 FloatComplexRowVector |
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464 linspace (const FloatComplex& x1, const FloatComplex& x2, octave_idx_type n) |
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465 { |
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466 if (n < 1) n = 1; |
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467 |
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468 NoAlias<FloatComplexRowVector> retval (n); |
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469 |
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470 FloatComplex delta = (x2 - x1) / (n - 1.0f); |
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471 retval(0) = x1; |
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472 for (octave_idx_type i = 1; i < n-1; i++) |
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473 retval(i) = x1 + static_cast<float> (i)*delta; |
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474 retval(n-1) = x2; |
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475 |
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476 return retval; |
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477 } |