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1 // N-D Array manipulations. |
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2 /* |
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3 |
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4 Copyright (C) 1996, 1997 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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24 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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25 #pragma implementation |
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26 #endif |
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27 |
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28 #ifdef HAVE_CONFIG_H |
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29 #include <config.h> |
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30 #endif |
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31 |
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32 #include <cfloat> |
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33 |
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4588
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34 #include "Array-util.h" |
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35 #include "CNDArray.h" |
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36 #include "mx-base.h" |
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37 #include "lo-ieee.h" |
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38 #include "lo-mappers.h" |
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39 |
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40 // XXX FIXME XXX -- could we use a templated mixed-type copy function |
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41 // here? |
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42 |
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43 ComplexNDArray::ComplexNDArray (const NDArray& a) |
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44 : MArrayN<Complex> (a.dims ()) |
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45 { |
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46 for (int i = 0; i < a.length (); i++) |
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47 elem (i) = a.elem (i); |
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48 } |
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49 |
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50 ComplexNDArray::ComplexNDArray (const boolNDArray& a) |
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51 : MArrayN<Complex> (a.dims ()) |
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52 { |
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53 for (int i = 0; i < a.length (); i++) |
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54 elem (i) = a.elem (i); |
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55 } |
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56 |
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57 ComplexNDArray::ComplexNDArray (const charNDArray& a) |
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58 : MArrayN<Complex> (a.dims ()) |
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59 { |
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60 for (int i = 0; i < a.length (); i++) |
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61 elem (i) = a.elem (i); |
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62 } |
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63 |
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64 // unary operations |
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65 |
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66 boolNDArray |
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67 ComplexNDArray::operator ! (void) const |
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68 { |
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69 boolNDArray b (dims ()); |
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70 |
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71 for (int i = 0; i < length (); i++) |
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72 b.elem (i) = elem (i) != 0.0; |
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73 |
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74 return b; |
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75 } |
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76 |
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77 // XXX FIXME XXX -- this is not quite the right thing. |
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78 |
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79 bool |
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80 ComplexNDArray::any_element_is_inf_or_nan (void) const |
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81 { |
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82 int nel = nelem (); |
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83 |
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84 for (int i = 0; i < nel; i++) |
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85 { |
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86 Complex val = elem (i); |
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87 if (xisinf (val) || xisnan (val)) |
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88 return true; |
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89 } |
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90 return false; |
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91 } |
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92 |
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93 // Return true if no elements have imaginary components. |
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94 |
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95 bool |
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96 ComplexNDArray::all_elements_are_real (void) const |
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97 { |
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98 int nel = nelem (); |
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99 |
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100 for (int i = 0; i < nel; i++) |
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101 { |
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102 double ip = imag (elem (i)); |
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103 |
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104 if (ip != 0.0 || lo_ieee_signbit (ip)) |
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105 return false; |
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106 } |
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107 |
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108 return true; |
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109 } |
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110 |
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111 // Return nonzero if any element of CM has a non-integer real or |
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112 // imaginary part. Also extract the largest and smallest (real or |
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113 // imaginary) values and return them in MAX_VAL and MIN_VAL. |
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114 |
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115 bool |
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116 ComplexNDArray::all_integers (double& max_val, double& min_val) const |
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117 { |
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118 int nel = nelem (); |
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119 |
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120 if (nel > 0) |
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121 { |
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122 Complex val = elem (0); |
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123 |
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124 double r_val = real (val); |
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125 double i_val = imag (val); |
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126 |
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127 max_val = r_val; |
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128 min_val = r_val; |
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129 |
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130 if (i_val > max_val) |
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131 max_val = i_val; |
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132 |
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133 if (i_val < max_val) |
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134 min_val = i_val; |
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135 } |
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136 else |
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137 return false; |
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138 |
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139 for (int i = 0; i < nel; i++) |
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140 { |
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141 Complex val = elem (i); |
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142 |
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143 double r_val = real (val); |
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144 double i_val = imag (val); |
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145 |
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146 if (r_val > max_val) |
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147 max_val = r_val; |
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148 |
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149 if (i_val > max_val) |
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150 max_val = i_val; |
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151 |
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152 if (r_val < min_val) |
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153 min_val = r_val; |
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154 |
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155 if (i_val < min_val) |
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156 min_val = i_val; |
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157 |
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158 if (D_NINT (r_val) != r_val || D_NINT (i_val) != i_val) |
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159 return false; |
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160 } |
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161 |
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162 return true; |
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163 } |
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164 |
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165 bool |
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166 ComplexNDArray::too_large_for_float (void) const |
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167 { |
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168 int nel = nelem (); |
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169 |
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170 for (int i = 0; i < nel; i++) |
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171 { |
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172 Complex val = elem (i); |
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173 |
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174 double r_val = real (val); |
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175 double i_val = imag (val); |
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176 |
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177 if (r_val > FLT_MAX |
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178 || i_val > FLT_MAX |
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179 || r_val < FLT_MIN |
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180 || i_val < FLT_MIN) |
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181 return true; |
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182 } |
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183 |
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184 return false; |
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185 } |
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186 |
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187 boolNDArray |
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188 ComplexNDArray::all (int dim) const |
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189 { |
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190 MX_ND_ANY_ALL_REDUCTION |
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191 (MX_ND_ALL_EVAL (elem (iter_idx) == Complex (0, 0)), true); |
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192 } |
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193 |
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194 boolNDArray |
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195 ComplexNDArray::any (int dim) const |
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196 { |
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197 MX_ND_ANY_ALL_REDUCTION |
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198 (MX_ND_ANY_EVAL (elem (iter_idx) != Complex (0, 0)), false); |
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199 } |
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200 |
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201 ComplexNDArray |
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202 ComplexNDArray::cumprod (int dim) const |
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203 { |
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204 MX_ND_CUMULATIVE_OP (ComplexNDArray, Complex, Complex (1, 0), *); |
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205 } |
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206 |
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207 ComplexNDArray |
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208 ComplexNDArray::cumsum (int dim) const |
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209 { |
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210 MX_ND_CUMULATIVE_OP (ComplexNDArray, Complex, Complex (0, 0), +); |
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211 } |
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212 |
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213 ComplexNDArray |
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214 ComplexNDArray::prod (int dim) const |
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215 { |
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216 MX_ND_COMPLEX_OP_REDUCTION (*= elem (iter_idx), Complex (1, 0)); |
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217 } |
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218 |
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219 ComplexNDArray |
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220 ComplexNDArray::sumsq (int dim) const |
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221 { |
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222 MX_ND_COMPLEX_OP_REDUCTION |
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223 (+= imag (elem (iter_idx)) |
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224 ? elem (iter_idx) * conj (elem (iter_idx)) |
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225 : std::pow (elem (iter_idx), 2), Complex (0, 0)); |
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226 } |
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227 |
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228 ComplexNDArray |
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229 ComplexNDArray::sum (int dim) const |
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230 { |
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231 MX_ND_COMPLEX_OP_REDUCTION (+= elem (iter_idx), Complex (0, 0)); |
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232 } |
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233 |
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234 bool |
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235 ComplexNDArray::cat (ComplexNDArray& cat_arr, int dim, int add_dim) const |
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236 { |
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237 MX_ND_CAT; |
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238 } |
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239 |
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240 NDArray |
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241 ComplexNDArray::abs (void) const |
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242 { |
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243 NDArray retval (dims ()); |
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244 |
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245 int nel = nelem (); |
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246 |
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247 for (int i = 0; i < nel; i++) |
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248 retval(i) = ::abs (elem (i)); |
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249 |
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250 return retval; |
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251 } |
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252 |
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253 ComplexMatrix |
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254 ComplexNDArray::matrix_value (void) const |
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255 { |
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256 ComplexMatrix retval; |
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257 |
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258 int nd = ndims (); |
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259 |
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260 switch (nd) |
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261 { |
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262 case 1: |
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263 retval = ComplexMatrix (Array2<Complex> (*this, dimensions(0), 1)); |
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264 break; |
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265 |
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266 case 2: |
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267 retval = ComplexMatrix (Array2<Complex> (*this, dimensions(0), |
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268 dimensions(1))); |
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269 break; |
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270 |
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271 default: |
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272 (*current_liboctave_error_handler) |
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273 ("invalid converstion of ComplexNDArray to ComplexMatrix"); |
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274 break; |
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275 } |
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276 |
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277 return retval; |
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278 } |
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279 |
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280 void |
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281 ComplexNDArray::increment_index (Array<int>& ra_idx, |
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282 const dim_vector& dimensions, |
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283 int start_dimension) |
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284 { |
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285 ::increment_index (ra_idx, dimensions, start_dimension); |
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286 } |
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287 |
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288 int |
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289 ComplexNDArray::compute_index (Array<int>& ra_idx, |
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290 const dim_vector& dimensions) |
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291 { |
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292 return ::compute_index (ra_idx, dimensions); |
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293 } |
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294 |
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295 |
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296 // This contains no information on the array structure !!! |
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297 std::ostream& |
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298 operator << (std::ostream& os, const ComplexNDArray& a) |
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299 { |
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300 int nel = a.nelem (); |
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301 |
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302 for (int i = 0; i < nel; i++) |
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303 { |
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304 os << " "; |
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305 octave_write_complex (os, a.elem (i)); |
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306 os << "\n"; |
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307 } |
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308 return os; |
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309 } |
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310 |
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311 std::istream& |
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312 operator >> (std::istream& is, ComplexNDArray& a) |
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313 { |
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314 int nel = a.nelem (); |
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315 |
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316 if (nel < 1 ) |
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317 is.clear (std::ios::badbit); |
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318 else |
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319 { |
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320 Complex tmp; |
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321 for (int i = 0; i < nel; i++) |
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322 { |
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323 tmp = octave_read_complex (is); |
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324 if (is) |
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325 a.elem (i) = tmp; |
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326 else |
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327 goto done; |
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328 } |
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329 } |
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330 |
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331 done: |
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332 |
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333 return is; |
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334 } |
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335 |
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336 NDS_CMP_OPS(ComplexNDArray, real, Complex, real) |
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337 NDS_BOOL_OPS(ComplexNDArray, Complex, 0.0) |
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338 |
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339 SND_CMP_OPS(Complex, real, ComplexNDArray, real) |
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340 SND_BOOL_OPS(Complex, ComplexNDArray, 0.0) |
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341 |
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342 NDND_CMP_OPS(ComplexNDArray, real, ComplexNDArray, real) |
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343 NDND_BOOL_OPS(ComplexNDArray, ComplexNDArray, 0.0) |
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344 |
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4514
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345 /* |
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346 ;;; Local Variables: *** |
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347 ;;; mode: C++ *** |
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348 ;;; End: *** |
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349 */ |
