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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 "data-conv.h" |
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30 #include "mach-info.h" |
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31 |
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32 #include "defun.h" |
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33 #include "gripes.h" |
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34 #include "oct-obj.h" |
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35 #include "oct-stream.h" |
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36 #include "ov-scalar.h" |
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37 #include "ov-base.h" |
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38 #include "ov-base-scalar.h" |
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39 #include "ov-base-scalar.cc" |
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40 #include "ov-re-mat.h" |
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41 #include "ov-typeinfo.h" |
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42 #include "pr-output.h" |
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43 #include "xdiv.h" |
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44 #include "xpow.h" |
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45 |
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46 #include "ls-oct-ascii.h" |
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47 #include "ls-hdf5.h" |
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48 |
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49 template class octave_base_scalar<double>; |
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50 |
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51 DEFINE_OCTAVE_ALLOCATOR (octave_scalar); |
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52 |
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53 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_scalar, "scalar", "double"); |
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54 |
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55 octave_value |
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56 octave_scalar::do_index_op (const octave_value_list& idx, int resize_ok) |
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57 { |
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58 octave_value retval; |
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59 |
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60 if (idx.valid_scalar_indices ()) |
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61 retval = scalar; |
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62 else |
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63 { |
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64 // XXX FIXME XXX -- this doesn't solve the problem of |
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65 // |
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66 // a = 1; a([1,1], [1,1], [1,1]) |
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67 // |
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68 // and similar constructions. Hmm... |
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69 |
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70 // XXX FIXME XXX -- using this constructor avoids narrowing the |
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71 // 1x1 matrix back to a scalar value. Need a better solution |
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72 // to this problem. |
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73 |
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74 octave_value tmp (new octave_matrix (matrix_value ())); |
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75 |
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76 retval = tmp.do_index_op (idx, resize_ok); |
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77 } |
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78 |
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79 return retval; |
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80 } |
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81 |
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82 std::streamoff |
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83 octave_scalar::streamoff_value (void) const |
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84 { |
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85 std::streamoff retval (-1); |
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86 |
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87 if (D_NINT (scalar) == scalar) |
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88 retval = std::streamoff (static_cast<long> (scalar)); |
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89 else |
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90 error ("conversion to streamoff value failed"); |
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91 |
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92 return retval; |
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93 } |
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94 |
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95 streamoff_array |
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96 octave_scalar::streamoff_array_value (void) const |
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97 { |
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98 streamoff_array retval; |
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99 |
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100 std::streamoff soff = streamoff_value (); |
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101 |
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102 if (! error_state) |
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103 retval = streamoff_array (dim_vector (1, 1), soff); |
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104 |
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105 return retval; |
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106 } |
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107 |
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108 octave_value |
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109 octave_scalar::convert_to_str_internal (bool, bool) const |
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110 { |
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111 octave_value retval; |
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112 |
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113 if (xisnan (scalar)) |
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114 ::error ("invalid conversion from NaN to character"); |
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115 else |
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116 { |
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117 int ival = NINT (scalar); |
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118 |
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119 if (ival < 0 || ival > UCHAR_MAX) |
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120 { |
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121 // XXX FIXME XXX -- is there something better we could do? |
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122 |
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123 ival = 0; |
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124 |
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125 ::warning ("range error for conversion to character value"); |
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126 } |
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127 |
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128 retval = octave_value (std::string (1, static_cast<char> (ival))); |
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129 } |
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130 |
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131 return retval; |
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132 } |
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133 |
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134 bool |
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135 octave_scalar::save_ascii (std::ostream& os, bool& infnan_warned, |
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136 bool strip_nan_and_inf) |
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137 { |
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138 double d = double_value (); |
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139 |
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140 if (strip_nan_and_inf) |
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141 { |
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142 if (xisnan (d)) |
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143 { |
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144 error ("only value to plot is NaN"); |
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145 return false; |
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146 } |
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147 else |
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148 { |
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149 d = xisinf (d) ? (d > 0 ? OCT_RBV : -OCT_RBV) : d; |
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150 octave_write_double (os, d); |
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151 os << "\n"; |
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152 } |
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153 } |
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154 else |
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155 { |
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156 if (! infnan_warned && (xisnan (d) || xisinf (d))) |
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157 { |
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158 warning ("save: Inf or NaN values may not be reloadable"); |
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159 infnan_warned = true; |
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160 } |
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161 |
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162 octave_write_double (os, d); |
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163 os << "\n"; |
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164 } |
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165 |
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166 return true; |
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167 } |
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168 |
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169 bool |
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170 octave_scalar::load_ascii (std::istream& is) |
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171 { |
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172 scalar = octave_read_double (is); |
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173 if (!is) |
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174 { |
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175 error ("load: failed to load scalar constant"); |
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176 return false; |
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177 } |
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178 |
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179 return true; |
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180 } |
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181 |
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182 bool |
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183 octave_scalar::save_binary (std::ostream& os, bool& /* save_as_floats */) |
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184 { |
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185 char tmp = (char) LS_DOUBLE; |
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186 os.write (X_CAST (char *, &tmp), 1); |
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187 double dtmp = double_value (); |
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188 os.write (X_CAST (char *, &dtmp), 8); |
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189 |
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190 return true; |
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191 } |
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192 |
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193 bool |
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194 octave_scalar::load_binary (std::istream& is, bool swap, |
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195 oct_mach_info::float_format fmt) |
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196 { |
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197 char tmp; |
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198 if (! is.read (X_CAST (char *, &tmp), 1)) |
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199 return false; |
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200 |
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201 double dtmp; |
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202 read_doubles (is, &dtmp, X_CAST (save_type, tmp), 1, swap, fmt); |
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203 if (error_state || ! is) |
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204 return false; |
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205 |
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206 scalar = dtmp; |
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207 return true; |
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208 } |
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209 |
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210 #if defined (HAVE_HDF5) |
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211 |
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212 bool |
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213 octave_scalar::save_hdf5 (hid_t loc_id, const char *name, |
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214 bool /* save_as_floats */) |
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215 { |
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216 hsize_t dimens[3]; |
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217 hid_t space_hid = -1, data_hid = -1; |
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218 bool retval = true; |
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219 |
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220 space_hid = H5Screate_simple (0, dimens, 0); |
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221 if (space_hid < 0) return false; |
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222 |
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223 data_hid = H5Dcreate (loc_id, name, H5T_NATIVE_DOUBLE, space_hid, |
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224 H5P_DEFAULT); |
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225 if (data_hid < 0) |
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226 { |
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227 H5Sclose (space_hid); |
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228 return false; |
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229 } |
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230 |
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231 double tmp = double_value (); |
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232 retval = H5Dwrite (data_hid, H5T_NATIVE_DOUBLE, H5S_ALL, H5S_ALL, |
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233 H5P_DEFAULT, &tmp) >= 0; |
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234 |
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235 H5Dclose (data_hid); |
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236 H5Sclose (space_hid); |
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237 |
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238 return retval; |
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239 } |
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240 |
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241 bool |
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242 octave_scalar::load_hdf5 (hid_t loc_id, const char *name, |
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243 bool /* have_h5giterate_bug */) |
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244 { |
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245 hid_t data_hid = H5Dopen (loc_id, name); |
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246 hid_t space_id = H5Dget_space (data_hid); |
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247 |
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248 hsize_t rank = H5Sget_simple_extent_ndims (space_id); |
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249 |
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250 if (rank != 0) |
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251 { |
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252 H5Dclose (data_hid); |
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253 return false; |
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254 } |
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255 |
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256 double dtmp; |
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257 if (H5Dread (data_hid, H5T_NATIVE_DOUBLE, H5S_ALL, H5S_ALL, |
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258 H5P_DEFAULT, &dtmp) < 0) |
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259 { |
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260 H5Dclose (data_hid); |
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261 return false; |
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262 } |
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263 |
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264 scalar = dtmp; |
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265 |
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266 H5Dclose (data_hid); |
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267 |
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268 return true; |
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269 } |
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270 |
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271 #endif |
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272 |
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273 /* |
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274 ;;; Local Variables: *** |
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275 ;;; mode: C++ *** |
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276 ;;; End: *** |
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277 */ |
