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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <iostream> |
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29 |
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30 #include "lo-ieee.h" |
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31 |
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32 #include "oct-obj.h" |
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33 #include "oct-stream.h" |
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34 #include "ops.h" |
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35 #include "ov-complex.h" |
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36 #include "ov-base.h" |
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37 #include "ov-base-scalar.h" |
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38 #include "ov-base-scalar.cc" |
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39 #include "ov-cx-mat.h" |
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40 #include "ov-scalar.h" |
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41 #include "gripes.h" |
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42 #include "pr-output.h" |
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43 |
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44 #include "ls-oct-ascii.h" |
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45 #include "ls-hdf5.h" |
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46 |
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47 template class octave_base_scalar<Complex>; |
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48 |
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49 DEFINE_OCTAVE_ALLOCATOR (octave_complex); |
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50 |
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51 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_complex, |
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52 "complex scalar", "double"); |
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53 |
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54 octave_value * |
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55 octave_complex::try_narrowing_conversion (void) |
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56 { |
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57 octave_value *retval = 0; |
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58 |
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59 double im = std::imag (scalar); |
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60 |
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61 if (im == 0.0 && ! lo_ieee_signbit (im)) |
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62 retval = new octave_scalar (real (scalar)); |
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63 |
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64 return retval; |
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65 } |
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66 |
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67 octave_value |
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68 octave_complex::do_index_op (const octave_value_list& idx, int resize_ok) |
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69 { |
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70 octave_value retval; |
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71 |
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72 if (idx.valid_scalar_indices ()) |
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73 retval = scalar; |
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74 else |
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75 { |
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76 // XXX FIXME XXX -- this doesn't solve the problem of |
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77 // |
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78 // a = i; a([1,1], [1,1], [1,1]) |
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79 // |
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80 // and similar constructions. Hmm... |
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81 |
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82 // XXX FIXME XXX -- using this constructor avoids narrowing the |
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83 // 1x1 matrix back to a scalar value. Need a better solution |
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84 // to this problem. |
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85 |
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86 octave_value tmp (new octave_complex_matrix (complex_matrix_value ())); |
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87 |
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88 retval = tmp.do_index_op (idx, resize_ok); |
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89 } |
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90 |
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91 return retval; |
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92 } |
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93 |
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94 double |
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95 octave_complex::double_value (bool force_conversion) const |
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96 { |
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97 double retval = lo_ieee_nan_value (); |
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98 |
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99 if (! force_conversion && Vwarn_imag_to_real) |
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100 gripe_implicit_conversion ("complex scalar", "real scalar"); |
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101 |
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102 retval = std::real (scalar); |
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103 |
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104 return retval; |
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105 } |
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106 |
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107 Matrix |
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108 octave_complex::matrix_value (bool force_conversion) const |
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109 { |
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110 Matrix retval; |
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111 |
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112 if (! force_conversion && Vwarn_imag_to_real) |
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113 gripe_implicit_conversion ("complex scalar", "real matrix"); |
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114 |
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115 retval = Matrix (1, 1, std::real (scalar)); |
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116 |
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117 return retval; |
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118 } |
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119 |
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120 NDArray |
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121 octave_complex::array_value (bool force_conversion) const |
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122 { |
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123 NDArray retval; |
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124 |
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125 if (! force_conversion && Vwarn_imag_to_real) |
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126 gripe_implicit_conversion ("complex scalar", "real matrix"); |
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127 |
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128 retval = NDArray (dim_vector (1, 1), std::real (scalar)); |
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129 |
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130 return retval; |
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131 } |
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132 |
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133 Complex |
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134 octave_complex::complex_value (bool) const |
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135 { |
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136 return scalar; |
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137 } |
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138 |
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139 |
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140 ComplexMatrix |
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141 octave_complex::complex_matrix_value (bool) const |
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142 { |
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143 return ComplexMatrix (1, 1, scalar); |
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144 } |
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145 |
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146 ComplexNDArray |
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147 octave_complex::complex_array_value (bool /* force_conversion */) const |
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148 { |
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149 return ComplexNDArray (dim_vector (1, 1), scalar); |
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150 } |
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151 |
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152 bool |
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153 octave_complex::save_ascii (std::ostream& os, bool& infnan_warned, |
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154 bool strip_nan_and_inf) |
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155 { |
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156 Complex c = complex_value (); |
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157 |
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158 if (strip_nan_and_inf) |
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159 { |
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160 if (xisnan (c)) |
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161 { |
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162 error ("only value to plot is NaN"); |
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163 return false; |
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164 } |
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165 else |
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166 { |
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167 double re = real (c); |
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168 double im = imag (c); |
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169 |
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170 re = xisinf (re) ? (re > 0 ? OCT_RBV : -OCT_RBV) : re; |
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171 im = xisinf (im) ? (im > 0 ? OCT_RBV : -OCT_RBV) : im; |
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172 |
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173 c = Complex (re, im); |
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174 |
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175 octave_write_complex (os, c); |
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176 os << "\n"; |
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177 } |
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178 } |
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179 else |
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180 { |
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181 if (! infnan_warned && (xisnan (c) || xisinf (c))) |
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182 { |
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183 warning ("save: Inf or NaN values may not be reloadable"); |
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184 infnan_warned = true; |
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185 } |
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186 |
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187 octave_write_complex (os, c); |
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188 os << "\n"; |
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189 } |
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190 |
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191 return true; |
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192 } |
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193 |
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194 bool |
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195 octave_complex::load_ascii (std::istream& is) |
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196 { |
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197 scalar = octave_read_complex (is); |
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198 |
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199 if (!is) |
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200 { |
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201 error ("load: failed to load complex scalar constant"); |
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202 return false; |
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203 } |
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204 |
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205 return true; |
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206 } |
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207 |
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208 |
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209 bool |
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210 octave_complex::save_binary (std::ostream& os, bool& /* save_as_floats */) |
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211 { |
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212 char tmp = (char) LS_DOUBLE; |
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213 os.write (X_CAST (char *, &tmp), 1); |
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214 Complex ctmp = complex_value (); |
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215 os.write (X_CAST (char *, &ctmp), 16); |
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216 |
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217 return true; |
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218 } |
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219 |
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220 bool |
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221 octave_complex::load_binary (std::istream& is, bool swap, |
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222 oct_mach_info::float_format fmt) |
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223 { |
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224 char tmp; |
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225 if (! is.read (X_CAST (char *, &tmp), 1)) |
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226 return false; |
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227 |
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228 Complex ctmp; |
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229 read_doubles (is, X_CAST (double *, &ctmp), X_CAST (save_type, tmp), 2, |
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230 swap, fmt); |
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231 if (error_state || ! is) |
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232 return false; |
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233 |
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234 scalar = ctmp; |
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235 return true; |
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236 } |
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237 |
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238 #if defined (HAVE_HDF5) |
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239 |
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240 bool |
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241 octave_complex::save_hdf5 (hid_t loc_id, const char *name, |
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242 bool /* save_as_floats */) |
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243 { |
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244 hsize_t dimens[3]; |
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245 hid_t space_hid = -1, type_hid = -1, data_hid = -1; |
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246 bool retval = true; |
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247 |
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248 space_hid = H5Screate_simple (0, dimens, 0); |
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249 if (space_hid < 0) |
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250 return false; |
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251 |
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252 type_hid = hdf5_make_complex_type (H5T_NATIVE_DOUBLE); |
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253 if (type_hid < 0) |
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254 { |
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255 H5Sclose (space_hid); |
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256 return false; |
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257 } |
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258 |
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259 data_hid = H5Dcreate (loc_id, name, type_hid, space_hid, H5P_DEFAULT); |
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260 if (data_hid < 0) |
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261 { |
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262 H5Sclose (space_hid); |
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263 H5Tclose (type_hid); |
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264 return false; |
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265 } |
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266 |
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267 Complex tmp = complex_value (); |
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268 retval = H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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269 &tmp) >= 0; |
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270 |
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271 H5Dclose (data_hid); |
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272 H5Tclose (type_hid); |
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273 H5Sclose (space_hid); |
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274 |
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275 return retval; |
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276 } |
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277 |
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278 bool |
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279 octave_complex::load_hdf5 (hid_t loc_id, const char *name, |
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280 bool /* have_h5giterate_bug */) |
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281 { |
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282 bool retval = false; |
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283 hid_t data_hid = H5Dopen (loc_id, name); |
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284 hid_t type_hid = H5Dget_type (data_hid); |
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285 |
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286 hid_t complex_type = hdf5_make_complex_type (H5T_NATIVE_DOUBLE); |
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287 |
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288 if (! hdf5_types_compatible (type_hid, complex_type)) |
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289 { |
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290 H5Tclose (complex_type); |
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291 H5Dclose (data_hid); |
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292 return false; |
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293 } |
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294 |
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295 hid_t space_id = H5Dget_space (data_hid); |
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296 hsize_t rank = H5Sget_simple_extent_ndims (space_id); |
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297 |
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298 if (rank != 0) |
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299 { |
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300 H5Tclose (complex_type); |
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301 H5Sclose (space_id); |
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302 H5Dclose (data_hid); |
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303 return false; |
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304 } |
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305 |
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306 // complex scalar: |
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307 Complex ctmp; |
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308 if (H5Dread (data_hid, complex_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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309 &ctmp) >= 0) |
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310 { |
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311 retval = true; |
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312 scalar = ctmp; |
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313 } |
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314 |
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315 H5Tclose (complex_type); |
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316 H5Sclose (space_id); |
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317 H5Dclose (data_hid); |
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318 |
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319 return retval; |
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320 } |
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321 |
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322 #endif |
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323 |
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324 /* |
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325 ;;; Local Variables: *** |
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326 ;;; mode: C++ *** |
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327 ;;; End: *** |
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328 */ |
