Mercurial > octave
annotate src/ov-base-diag.cc @ 8398:d95282fa0579
allow element assignment to diagonal matrices
author | Jaroslav Hajek <highegg@gmail.com> |
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date | Thu, 11 Dec 2008 11:04:00 +0100 |
parents | c43481a19bfe |
children | f00578b495e9 |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 2008 Jaroslav Hajek <highegg@gmail.com> |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <iostream> |
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28 |
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29 #include "mach-info.h" |
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30 |
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31 #include "ov-base.h" |
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32 #include "ov-base-mat.h" |
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33 #include "pr-output.h" |
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34 #include "error.h" |
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35 #include "gripes.h" |
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36 #include "oct-stream.h" |
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37 #include "ops.h" |
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38 |
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39 #include "ls-oct-ascii.h" |
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40 |
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41 template <class DMT, class MT> |
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42 octave_value |
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43 octave_base_diag<DMT, MT>::subsref (const std::string& type, |
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44 const std::list<octave_value_list>& idx) |
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45 { |
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46 octave_value retval; |
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47 |
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48 switch (type[0]) |
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49 { |
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50 case '(': |
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51 retval = do_index_op (idx.front ()); |
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52 break; |
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53 |
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54 case '{': |
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55 case '.': |
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56 { |
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57 std::string nm = type_name (); |
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58 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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59 } |
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60 break; |
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61 |
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62 default: |
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63 panic_impossible (); |
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64 } |
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65 |
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66 return retval.next_subsref (type, idx); |
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67 } |
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68 |
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69 template <class DMT, class MT> |
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70 octave_value |
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71 octave_base_diag<DMT, MT>::do_index_op (const octave_value_list& idx, |
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72 bool resize_ok) |
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73 { |
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74 octave_value retval; |
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75 typedef typename DMT::element_type el_type; |
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76 el_type one = 1; |
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77 |
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78 octave_idx_type nidx = idx.length (); |
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79 idx_vector idx0, idx1; |
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80 if (nidx == 2) |
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81 { |
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82 idx0 = idx(0).index_vector (); |
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83 idx1 = idx(1).index_vector (); |
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84 } |
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85 |
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86 // This hack is to allow constructing permutation matrices using |
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87 // eye(n)(p,:), eye(n)(:,q) && eye(n)(p,q) where p & q are permutation |
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88 // vectors. |
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89 // Note that, for better consistency, eye(n)(:,:) still converts to a full |
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90 // matrix. |
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91 // FIXME: This check is probably unnecessary for complex matrices. |
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92 if (! error_state && nidx == 2 && matrix.is_multiple_of_identity (one)) |
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93 { |
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94 |
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95 bool left = idx0.is_permutation (matrix.rows ()); |
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96 bool right = idx1.is_permutation (matrix.cols ()); |
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97 |
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98 if (left && right) |
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99 { |
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100 if (idx0.is_colon ()) left = false; |
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101 if (idx1.is_colon ()) right = false; |
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102 if (left && right) |
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103 retval = octave_value (PermMatrix (idx0, false) * PermMatrix (idx1, true), |
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104 is_single_type ()); |
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105 else if (left) |
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106 retval = octave_value (PermMatrix (idx0, false), |
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107 is_single_type ()); |
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108 else if (right) |
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109 retval = octave_value (PermMatrix (idx1, true), |
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110 is_single_type ()); |
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111 } |
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112 } |
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113 |
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114 // if error_state is set, we've already griped. |
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115 if (! error_state && ! retval.is_defined ()) |
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116 { |
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117 if (nidx == 2 && ! resize_ok && |
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118 idx0.is_scalar () && idx1.is_scalar ()) |
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119 { |
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120 // FIXME: the proxy mechanism of DiagArray2 causes problems here. |
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121 retval = el_type (matrix.checkelem (idx0(0), idx1(0))); |
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122 } |
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123 else |
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124 retval = to_dense ().do_index_op (idx, resize_ok); |
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125 } |
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126 |
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127 return retval; |
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128 } |
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129 |
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130 template <class DMT, class MT> |
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131 octave_value |
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132 octave_base_diag<DMT, MT>::subsasgn (const std::string& type, |
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133 const std::list<octave_value_list>& idx, |
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134 const octave_value& rhs) |
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135 { |
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136 octave_value retval; |
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137 |
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138 switch (type[0]) |
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139 { |
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140 case '(': |
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141 { |
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142 if (type.length () == 1) |
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143 { |
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144 octave_value_list jdx = idx.front (); |
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145 // Check for a simple element assignment. That means, if D is a diagonal matrix, |
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146 // `D(i,i) = x' will not destroy its diagonality (provided i is a valid index). |
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147 if (jdx.length () == 2 && jdx(0).is_scalar_type () && jdx(1).is_scalar_type ()) |
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148 { |
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149 typename DMT::element_type val; |
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150 idx_vector i0 = jdx(0).index_vector (), i1 = jdx(1).index_vector (); |
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151 if (! error_state && i0(0) == i1(0) |
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152 && i0(0) < matrix.rows () && i1(0) < matrix.cols () |
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153 && chk_valid_scalar (rhs, val)) |
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154 { |
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155 matrix (i0(0), i1(0)) = val; |
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156 retval = this; |
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157 this->count++; |
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158 // invalidate cache |
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159 dense_cache = octave_value (); |
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160 } |
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161 } |
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162 |
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163 if (! error_state && ! retval.is_defined ()) |
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164 retval = numeric_assign (type, idx, rhs); |
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165 } |
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166 else |
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167 { |
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168 std::string nm = type_name (); |
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169 error ("in indexed assignment of %s, last lhs index must be ()", |
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170 nm.c_str ()); |
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171 } |
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172 } |
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173 break; |
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174 |
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175 case '{': |
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176 case '.': |
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177 { |
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178 if (is_empty ()) |
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179 { |
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180 octave_value tmp = octave_value::empty_conv (type, rhs); |
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181 |
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182 retval = tmp.subsasgn (type, idx, rhs); |
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183 } |
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184 else |
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185 { |
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186 std::string nm = type_name (); |
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187 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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188 } |
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189 } |
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190 break; |
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191 |
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192 default: |
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193 panic_impossible (); |
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194 } |
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195 |
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196 return retval; |
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197 } |
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198 |
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199 template <class DMT, class MT> |
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200 octave_value |
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201 octave_base_diag<DMT, MT>::resize (const dim_vector& dv, bool fill) const |
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202 { |
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203 octave_value retval; |
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204 if (dv.length () == 2) |
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205 { |
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206 DMT rm (matrix); |
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207 rm.resize (dv(0), dv(1)); |
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208 retval = rm; |
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209 } |
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210 else |
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211 retval = to_dense ().resize (dv, fill); |
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212 return retval; |
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213 } |
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214 |
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215 template <class DMT, class MT> |
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216 bool |
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217 octave_base_diag<DMT, MT>::is_true (void) const |
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218 { |
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219 return to_dense ().is_true (); |
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220 } |
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221 |
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222 template <class DMT, class MT> |
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223 bool |
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224 octave_base_diag<DMT, MT>::valid_as_scalar_index (void) const |
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225 { |
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226 // FIXME |
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227 return false; |
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228 } |
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229 |
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230 // FIXME: this should be achieveable using ::real |
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231 template <class T> inline T helper_getreal (T x) { return x; } |
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232 template <class T> inline T helper_getreal (std::complex<T> x) { return x.real (); } |
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233 // FIXME: we really need some traits so that ad hoc hooks like this are not necessary |
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234 template <class T> inline T helper_iscomplex (T) { return false; } |
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235 template <class T> inline T helper_iscomplex (std::complex<T>) { return true; } |
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236 |
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237 template <class DMT, class MT> |
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238 double |
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239 octave_base_diag<DMT, MT>::double_value (bool force_conversion) const |
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240 { |
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241 double retval = lo_ieee_nan_value (); |
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242 typedef typename DMT::element_type el_type; |
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243 |
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244 if (helper_iscomplex (el_type ()) && ! force_conversion) |
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245 gripe_implicit_conversion ("Octave:imag-to-real", |
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246 "complex matrix", "real scalar"); |
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247 |
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248 if (numel () > 0) |
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249 { |
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250 gripe_implicit_conversion ("Octave:array-as-scalar", |
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251 type_name (), "real scalar"); |
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252 |
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253 retval = helper_getreal (el_type (matrix (0, 0))); |
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254 } |
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255 else |
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256 gripe_invalid_conversion (type_name (), "real scalar"); |
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257 |
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258 return retval; |
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259 } |
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260 |
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261 template <class DMT, class MT> |
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262 float |
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263 octave_base_diag<DMT, MT>::float_value (bool force_conversion) const |
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264 { |
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265 float retval = lo_ieee_float_nan_value (); |
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266 typedef typename DMT::element_type el_type; |
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267 |
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268 if (helper_iscomplex (el_type ()) && ! force_conversion) |
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269 gripe_implicit_conversion ("Octave:imag-to-real", |
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270 "complex matrix", "real scalar"); |
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271 |
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272 if (numel () > 0) |
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273 { |
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274 gripe_implicit_conversion ("Octave:array-as-scalar", |
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275 type_name (), "real scalar"); |
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276 |
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277 retval = helper_getreal (el_type (matrix (0, 0))); |
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278 } |
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279 else |
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280 gripe_invalid_conversion (type_name (), "real scalar"); |
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281 |
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282 return retval; |
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283 } |
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284 |
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285 template <class DMT, class MT> |
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286 Complex |
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287 octave_base_diag<DMT, MT>::complex_value (bool) const |
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288 { |
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289 double tmp = lo_ieee_nan_value (); |
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290 |
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291 Complex retval (tmp, tmp); |
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292 |
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293 if (rows () > 0 && columns () > 0) |
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294 { |
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295 gripe_implicit_conversion ("Octave:array-as-scalar", |
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296 type_name (), "complex scalar"); |
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297 |
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298 retval = matrix (0, 0); |
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299 } |
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300 else |
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301 gripe_invalid_conversion (type_name (), "complex scalar"); |
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302 |
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303 return retval; |
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304 } |
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305 |
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306 template <class DMT, class MT> |
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307 FloatComplex |
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308 octave_base_diag<DMT, MT>::float_complex_value (bool) const |
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309 { |
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310 float tmp = lo_ieee_float_nan_value (); |
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311 |
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312 FloatComplex retval (tmp, tmp); |
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313 |
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314 if (rows () > 0 && columns () > 0) |
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315 { |
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316 gripe_implicit_conversion ("Octave:array-as-scalar", |
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317 type_name (), "complex scalar"); |
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318 |
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319 retval = matrix (0, 0); |
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320 } |
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321 else |
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322 gripe_invalid_conversion (type_name (), "complex scalar"); |
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323 |
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324 return retval; |
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325 } |
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326 |
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327 template <class DMT, class MT> |
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328 Matrix |
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329 octave_base_diag<DMT, MT>::matrix_value (bool) const |
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330 { |
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331 return Matrix (diag_matrix_value ()); |
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332 } |
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333 |
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334 template <class DMT, class MT> |
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335 FloatMatrix |
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336 octave_base_diag<DMT, MT>::float_matrix_value (bool) const |
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337 { |
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338 return FloatMatrix (float_diag_matrix_value ()); |
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339 } |
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340 |
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341 template <class DMT, class MT> |
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342 ComplexMatrix |
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343 octave_base_diag<DMT, MT>::complex_matrix_value (bool) const |
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344 { |
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345 return ComplexMatrix (complex_diag_matrix_value ()); |
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346 } |
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347 |
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348 template <class DMT, class MT> |
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349 FloatComplexMatrix |
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350 octave_base_diag<DMT, MT>::float_complex_matrix_value (bool) const |
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351 { |
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352 return FloatComplexMatrix (float_complex_diag_matrix_value ()); |
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353 } |
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354 |
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355 template <class DMT, class MT> |
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356 NDArray |
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357 octave_base_diag<DMT, MT>::array_value (bool) const |
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358 { |
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359 return NDArray (matrix_value ()); |
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360 } |
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361 |
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362 template <class DMT, class MT> |
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363 FloatNDArray |
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364 octave_base_diag<DMT, MT>::float_array_value (bool) const |
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365 { |
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366 return FloatNDArray (float_matrix_value ()); |
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367 } |
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368 |
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369 template <class DMT, class MT> |
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370 ComplexNDArray |
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371 octave_base_diag<DMT, MT>::complex_array_value (bool) const |
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372 { |
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373 return ComplexNDArray (complex_matrix_value ()); |
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374 } |
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375 |
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376 template <class DMT, class MT> |
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377 FloatComplexNDArray |
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378 octave_base_diag<DMT, MT>::float_complex_array_value (bool) const |
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379 { |
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380 return FloatComplexNDArray (float_complex_matrix_value ()); |
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381 } |
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382 |
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383 template <class DMT, class MT> |
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384 boolNDArray |
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385 octave_base_diag<DMT, MT>::bool_array_value (bool warn) const |
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386 { |
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387 return to_dense ().bool_array_value (warn); |
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388 } |
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389 |
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390 template <class DMT, class MT> |
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391 charNDArray |
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392 octave_base_diag<DMT, MT>::char_array_value (bool warn) const |
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393 { |
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394 return to_dense ().char_array_value (warn); |
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395 } |
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396 |
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397 template <class DMT, class MT> |
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398 SparseMatrix |
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399 octave_base_diag<DMT, MT>::sparse_matrix_value (bool) const |
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400 { |
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401 return SparseMatrix (diag_matrix_value ()); |
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402 } |
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403 |
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404 template <class DMT, class MT> |
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405 SparseComplexMatrix |
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406 octave_base_diag<DMT, MT>::sparse_complex_matrix_value (bool) const |
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407 { |
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408 return SparseComplexMatrix (complex_diag_matrix_value ()); |
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409 } |
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410 |
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411 template <class DMT, class MT> |
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412 idx_vector |
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413 octave_base_diag<DMT, MT>::index_vector (void) const |
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414 { |
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415 return to_dense ().index_vector (); |
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416 } |
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417 |
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418 template <class DMT, class MT> |
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419 octave_value |
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420 octave_base_diag<DMT, MT>::convert_to_str_internal (bool pad, bool force, char type) const |
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421 { |
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422 return to_dense ().convert_to_str_internal (pad, force, type); |
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423 } |
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424 |
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425 template <class DMT, class MT> |
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426 bool |
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427 octave_base_diag<DMT, MT>::save_ascii (std::ostream& os) |
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428 { |
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429 os << "# rows: " << matrix.rows () << "\n" |
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430 << "# columns: " << matrix.columns () << "\n"; |
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431 |
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432 os << matrix.diag (); |
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433 |
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434 return true; |
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435 } |
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436 |
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437 template <class DMT, class MT> |
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438 bool |
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439 octave_base_diag<DMT, MT>::load_ascii (std::istream& is) |
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440 { |
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441 octave_idx_type r = 0, c = 0; |
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442 bool success = true; |
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443 |
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444 if (extract_keyword (is, "rows", r, true) |
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445 && extract_keyword (is, "columns", c, true)) |
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446 { |
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447 octave_idx_type l = r < c ? r : c; |
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448 MT tmp (l, 1); |
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449 is >> tmp; |
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450 |
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451 if (!is) |
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452 { |
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453 error ("load: failed to load diagonal matrix constant"); |
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454 success = false; |
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455 } |
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456 else |
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457 { |
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458 // This is a little tricky, as we have the Matrix type, but |
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459 // not ColumnVector type. We need to help the compiler get |
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460 // through the inheritance tree. |
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461 typedef typename DMT::element_type el_type; |
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462 matrix = DMT (MDiagArray2<el_type> (MArray<el_type> (tmp))); |
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463 matrix.resize (r, c); |
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464 |
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465 // Invalidate cache. Probably not necessary, but safe. |
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466 dense_cache = octave_value (); |
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467 } |
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468 } |
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469 else |
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470 { |
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471 error ("load: failed to extract number of rows and columns"); |
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472 success = false; |
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473 } |
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474 |
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475 return success; |
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476 } |
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477 |
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478 template <class DMT, class MT> |
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479 void |
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480 octave_base_diag<DMT, MT>::print_raw (std::ostream& os, |
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481 bool pr_as_read_syntax) const |
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482 { |
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483 return to_dense ().print_raw (os, pr_as_read_syntax); |
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484 } |
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485 |
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486 template <class DMT, class MT> |
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487 mxArray * |
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488 octave_base_diag<DMT, MT>::as_mxArray (void) const |
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489 { |
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490 return to_dense ().as_mxArray (); |
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491 } |
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492 |
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493 template <class DMT, class MT> |
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494 bool |
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495 octave_base_diag<DMT, MT>::print_as_scalar (void) const |
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496 { |
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497 dim_vector dv = dims (); |
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498 |
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499 return (dv.all_ones () || dv.any_zero ()); |
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500 } |
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501 |
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502 template <class DMT, class MT> |
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503 void |
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504 octave_base_diag<DMT, MT>::print (std::ostream& os, bool pr_as_read_syntax) const |
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505 { |
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506 print_raw (os, pr_as_read_syntax); |
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507 newline (os); |
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508 } |
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509 template <class DMT, class MT> |
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510 int |
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511 octave_base_diag<DMT, MT>::write (octave_stream& os, int block_size, |
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512 oct_data_conv::data_type output_type, int skip, |
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513 oct_mach_info::float_format flt_fmt) const |
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514 { |
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515 return to_dense ().write (os, block_size, output_type, skip, flt_fmt); |
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516 } |
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517 |
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518 template <class DMT, class MT> |
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519 void |
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520 octave_base_diag<DMT, MT>::print_info (std::ostream& os, |
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521 const std::string& prefix) const |
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522 { |
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523 matrix.print_info (os, prefix); |
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524 } |
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525 |
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526 template <class DMT, class MT> |
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Jaroslav Hajek <highegg@gmail.com>
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527 octave_value |
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528 octave_base_diag<DMT, MT>::to_dense (void) const |
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parents:
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529 { |
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parents:
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530 if (! dense_cache.is_defined ()) |
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parents:
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531 dense_cache = MT (matrix); |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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532 |
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533 return dense_cache; |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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534 } |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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535 |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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536 #define FORWARD_MAPPER(MAP) \ |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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537 template <class DMT, class MT> \ |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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538 octave_value \ |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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539 octave_base_diag<DMT, MT>::MAP (void) const \ |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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540 { \ |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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541 return to_dense ().MAP (); \ |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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542 } |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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543 |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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544 FORWARD_MAPPER (erf) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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545 FORWARD_MAPPER (erfc) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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546 FORWARD_MAPPER (gamma) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff
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547 FORWARD_MAPPER (lgamma) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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548 FORWARD_MAPPER (acos) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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549 FORWARD_MAPPER (acosh) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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550 FORWARD_MAPPER (angle) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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551 FORWARD_MAPPER (arg) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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552 FORWARD_MAPPER (asin) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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553 FORWARD_MAPPER (asinh) |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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554 FORWARD_MAPPER (atan) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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555 FORWARD_MAPPER (atanh) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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556 FORWARD_MAPPER (ceil) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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557 FORWARD_MAPPER (cos) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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558 FORWARD_MAPPER (cosh) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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559 FORWARD_MAPPER (exp) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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560 FORWARD_MAPPER (expm1) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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561 FORWARD_MAPPER (fix) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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562 FORWARD_MAPPER (floor) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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563 FORWARD_MAPPER (log) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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564 FORWARD_MAPPER (log2) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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565 FORWARD_MAPPER (log10) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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566 FORWARD_MAPPER (log1p) |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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567 FORWARD_MAPPER (round) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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568 FORWARD_MAPPER (roundb) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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569 FORWARD_MAPPER (signum) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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570 FORWARD_MAPPER (sin) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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571 FORWARD_MAPPER (sinh) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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572 FORWARD_MAPPER (sqrt) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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573 FORWARD_MAPPER (tan) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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574 FORWARD_MAPPER (tanh) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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575 FORWARD_MAPPER (finite) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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|
576 FORWARD_MAPPER (isinf) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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577 FORWARD_MAPPER (isna) |
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implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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changeset
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578 FORWARD_MAPPER (isnan) |
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Jaroslav Hajek <highegg@gmail.com>
parents:
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|
579 |