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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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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 2, or (at your option) any |
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10 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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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 "lo-ieee.h" |
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30 |
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31 #include "oct-obj.h" |
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32 #include "oct-stream.h" |
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33 #include "ops.h" |
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34 #include "ov-complex.h" |
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35 #include "ov-base.h" |
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36 #include "ov-base-scalar.h" |
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37 #include "ov-base-scalar.cc" |
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38 #include "ov-cx-mat.h" |
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39 #include "ov-scalar.h" |
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40 #include "gripes.h" |
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41 #include "pr-output.h" |
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42 |
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43 #include "ls-oct-ascii.h" |
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44 #include "ls-hdf5.h" |
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45 |
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46 template class octave_base_scalar<Complex>; |
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47 |
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48 DEFINE_OCTAVE_ALLOCATOR (octave_complex); |
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49 |
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50 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_complex, |
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51 "complex scalar", "double"); |
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52 |
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53 octave_value * |
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54 octave_complex::try_narrowing_conversion (void) |
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55 { |
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56 octave_value *retval = 0; |
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57 |
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58 if (imag (scalar) == 0.0) |
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59 retval = new octave_scalar (real (scalar)); |
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60 |
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61 return retval; |
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62 } |
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63 |
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64 octave_value |
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65 octave_complex::do_index_op (const octave_value_list& idx, int resize_ok) |
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66 { |
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67 octave_value retval; |
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68 |
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69 if (idx.valid_scalar_indices ()) |
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70 retval = scalar; |
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71 else |
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72 { |
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73 // XXX FIXME XXX -- this doesn't solve the problem of |
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74 // |
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75 // a = i; a([1,1], [1,1], [1,1]) |
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76 // |
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77 // and similar constructions. Hmm... |
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78 |
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79 // XXX FIXME XXX -- using this constructor avoids narrowing the |
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80 // 1x1 matrix back to a scalar value. Need a better solution |
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81 // to this problem. |
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82 |
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83 octave_value tmp (new octave_complex_matrix (complex_matrix_value ())); |
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84 |
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85 retval = tmp.do_index_op (idx, resize_ok); |
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86 } |
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87 |
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88 return retval; |
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89 } |
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90 |
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91 double |
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92 octave_complex::double_value (bool force_conversion) const |
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93 { |
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94 double retval = lo_ieee_nan_value (); |
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95 |
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96 if (! force_conversion && Vwarn_imag_to_real) |
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97 gripe_implicit_conversion ("complex scalar", "real scalar"); |
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98 |
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99 retval = std::real (scalar); |
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100 |
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101 return retval; |
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102 } |
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103 |
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104 Matrix |
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105 octave_complex::matrix_value (bool force_conversion) const |
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106 { |
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107 Matrix retval; |
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108 |
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109 if (! force_conversion && Vwarn_imag_to_real) |
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110 gripe_implicit_conversion ("complex scalar", "real matrix"); |
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111 |
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112 retval = Matrix (1, 1, std::real (scalar)); |
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113 |
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114 return retval; |
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115 } |
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116 |
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117 NDArray |
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118 octave_complex::array_value (bool force_conversion) const |
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119 { |
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120 NDArray retval; |
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121 |
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122 if (! force_conversion && Vwarn_imag_to_real) |
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123 gripe_implicit_conversion ("complex scalar", "real matrix"); |
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124 |
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125 retval = NDArray (dim_vector (1, 1), std::real (scalar)); |
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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 Complex |
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131 octave_complex::complex_value (bool) const |
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132 { |
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133 return scalar; |
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134 } |
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135 |
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136 |
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137 ComplexMatrix |
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138 octave_complex::complex_matrix_value (bool) const |
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139 { |
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140 return ComplexMatrix (1, 1, scalar); |
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141 } |
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142 |
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143 ComplexNDArray |
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144 octave_complex::complex_array_value (bool /* force_conversion */) const |
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145 { |
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146 return ComplexNDArray (dim_vector (1, 1), scalar); |
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147 } |
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148 |
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149 bool |
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150 octave_complex::save_ascii (std::ostream& os, bool& infnan_warned, |
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151 bool strip_nan_and_inf) |
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152 { |
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153 Complex c = complex_value (); |
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154 |
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155 if (strip_nan_and_inf) |
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156 { |
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157 if (xisnan (c)) |
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158 { |
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159 error ("only value to plot is NaN"); |
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160 return false; |
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161 } |
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162 else |
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163 { |
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164 double re = real (c); |
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165 double im = imag (c); |
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166 |
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167 re = xisinf (re) ? (re > 0 ? OCT_RBV : -OCT_RBV) : re; |
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168 im = xisinf (im) ? (im > 0 ? OCT_RBV : -OCT_RBV) : im; |
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169 |
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170 c = Complex (re, im); |
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171 |
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172 octave_write_complex (os, c); |
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173 os << "\n"; |
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174 } |
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175 } |
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176 else |
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177 { |
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178 if (! infnan_warned && (xisnan (c) || xisinf (c))) |
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179 { |
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180 warning ("save: Inf or NaN values may not be reloadable"); |
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181 infnan_warned = true; |
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182 } |
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183 |
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184 octave_write_complex (os, c); |
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185 os << "\n"; |
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186 } |
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187 |
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188 return true; |
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189 } |
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190 |
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191 bool |
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192 octave_complex::load_ascii (std::istream& is) |
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193 { |
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194 scalar = octave_read_complex (is); |
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195 |
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196 if (!is) |
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197 { |
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198 error ("load: failed to load complex scalar constant"); |
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199 return false; |
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200 } |
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201 |
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202 return true; |
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203 } |
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204 |
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205 |
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206 bool |
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207 octave_complex::save_binary (std::ostream& os, bool& /* save_as_floats */) |
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208 { |
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209 char tmp = (char) LS_DOUBLE; |
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210 os.write (X_CAST (char *, &tmp), 1); |
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211 Complex ctmp = complex_value (); |
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212 os.write (X_CAST (char *, &ctmp), 16); |
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213 |
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214 return true; |
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215 } |
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216 |
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217 bool |
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218 octave_complex::load_binary (std::istream& is, bool swap, |
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219 oct_mach_info::float_format fmt) |
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220 { |
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221 char tmp; |
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222 if (! is.read (X_CAST (char *, &tmp), 1)) |
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223 return false; |
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224 |
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225 Complex ctmp; |
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226 read_doubles (is, X_CAST (double *, &ctmp), X_CAST (save_type, tmp), 2, |
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227 swap, fmt); |
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228 if (error_state || ! is) |
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229 return false; |
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230 |
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231 scalar = ctmp; |
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232 return true; |
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233 } |
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234 |
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235 #if defined (HAVE_HDF5) |
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236 |
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237 bool |
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238 octave_complex::save_hdf5 (hid_t loc_id, const char *name, |
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239 bool /* save_as_floats */) |
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240 { |
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241 hsize_t dimens[3]; |
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242 hid_t space_hid = -1, type_hid = -1, data_hid = -1; |
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243 bool retval = true; |
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244 |
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245 space_hid = H5Screate_simple (0, dimens, 0); |
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246 if (space_hid < 0) |
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247 return false; |
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248 |
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249 type_hid = hdf5_make_complex_type (H5T_NATIVE_DOUBLE); |
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250 if (type_hid < 0) |
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251 { |
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252 H5Sclose (space_hid); |
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253 return false; |
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254 } |
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255 |
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256 data_hid = H5Dcreate (loc_id, name, type_hid, space_hid, H5P_DEFAULT); |
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257 if (data_hid < 0) |
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258 { |
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259 H5Sclose (space_hid); |
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260 H5Tclose (type_hid); |
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261 return false; |
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262 } |
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263 |
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264 Complex tmp = complex_value (); |
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265 retval = H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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266 &tmp) >= 0; |
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267 |
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268 H5Dclose (data_hid); |
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269 H5Tclose (type_hid); |
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270 H5Sclose (space_hid); |
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271 |
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272 return retval; |
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273 } |
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274 |
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275 bool |
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276 octave_complex::load_hdf5 (hid_t loc_id, const char *name, |
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277 bool /* have_h5giterate_bug */) |
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278 { |
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279 bool retval = false; |
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280 hid_t data_hid = H5Dopen (loc_id, name); |
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281 hid_t type_hid = H5Dget_type (data_hid); |
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282 |
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283 hid_t complex_type = hdf5_make_complex_type (H5T_NATIVE_DOUBLE); |
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284 |
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285 if (! hdf5_types_compatible (type_hid, complex_type)) |
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286 { |
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287 H5Tclose (complex_type); |
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288 H5Dclose (data_hid); |
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289 return false; |
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290 } |
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291 |
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292 hid_t space_id = H5Dget_space (data_hid); |
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293 hsize_t rank = H5Sget_simple_extent_ndims (space_id); |
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294 |
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295 if (rank != 0) |
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296 { |
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297 H5Tclose (complex_type); |
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298 H5Sclose (space_id); |
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299 H5Dclose (data_hid); |
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300 return false; |
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301 } |
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302 |
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303 // complex scalar: |
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304 Complex ctmp; |
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305 if (H5Dread (data_hid, complex_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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306 &ctmp) >= 0) |
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307 { |
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308 retval = true; |
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309 scalar = ctmp; |
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310 } |
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311 |
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312 H5Tclose (complex_type); |
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313 H5Sclose (space_id); |
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314 H5Dclose (data_hid); |
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315 |
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316 return retval; |
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317 } |
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318 |
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319 #endif |
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320 |
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321 /* |
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322 ;;; Local Variables: *** |
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323 ;;; mode: C++ *** |
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324 ;;; End: *** |
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325 */ |
