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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 "data-conv.h" |
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31 #include "mach-info.h" |
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32 |
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33 #include "defun.h" |
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34 #include "gripes.h" |
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35 #include "oct-obj.h" |
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36 #include "oct-stream.h" |
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37 #include "ov-scalar.h" |
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38 #include "ov-base.h" |
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39 #include "ov-base-scalar.h" |
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40 #include "ov-base-scalar.cc" |
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41 #include "ov-re-mat.h" |
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42 #include "ov-typeinfo.h" |
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43 #include "pr-output.h" |
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44 #include "xdiv.h" |
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45 #include "xpow.h" |
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46 |
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47 #include "ls-oct-ascii.h" |
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48 #include "ls-hdf5.h" |
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49 |
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50 template class octave_base_scalar<double>; |
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51 |
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52 DEFINE_OCTAVE_ALLOCATOR (octave_scalar); |
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53 |
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54 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_scalar, "scalar", "double"); |
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55 |
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56 octave_value |
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57 octave_scalar::do_index_op (const octave_value_list& idx, bool resize_ok) |
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58 { |
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59 octave_value retval; |
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60 |
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61 if (idx.valid_scalar_indices ()) |
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62 retval = scalar; |
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63 else |
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64 { |
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65 // FIXME -- this doesn't solve the problem of |
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66 // |
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67 // a = 1; a([1,1], [1,1], [1,1]) |
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68 // |
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69 // and similar constructions. Hmm... |
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70 |
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71 // FIXME -- using this constructor avoids narrowing the |
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72 // 1x1 matrix back to a scalar value. Need a better solution |
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73 // to this problem. |
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74 |
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75 octave_value tmp (new octave_matrix (matrix_value ())); |
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76 |
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77 retval = tmp.do_index_op (idx, resize_ok); |
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78 } |
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79 |
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80 return retval; |
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81 } |
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82 |
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83 std::streamoff |
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84 octave_scalar::streamoff_value (void) const |
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85 { |
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86 std::streamoff retval (-1); |
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87 |
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88 if (D_NINT (scalar) == scalar) |
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89 retval = std::streamoff (static_cast<long> (scalar)); |
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90 else |
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91 error ("conversion to streamoff value failed"); |
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92 |
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93 return retval; |
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94 } |
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95 |
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96 streamoff_array |
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97 octave_scalar::streamoff_array_value (void) const |
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98 { |
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99 streamoff_array retval; |
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100 |
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101 std::streamoff soff = streamoff_value (); |
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102 |
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103 if (! error_state) |
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104 retval = streamoff_array (dim_vector (1, 1), soff); |
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105 |
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106 return retval; |
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107 } |
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108 |
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109 octave_value |
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110 octave_scalar::resize (const dim_vector& dv, bool fill) const |
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111 { |
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112 if (fill) |
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113 { |
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114 NDArray retval (dv, NDArray::resize_fill_value()); |
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115 |
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116 if (dv.numel ()) |
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117 retval(0) = scalar; |
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118 |
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119 return retval; |
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120 } |
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121 else |
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122 { |
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123 NDArray retval (dv); |
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124 |
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125 if (dv.numel ()) |
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126 retval(0) = scalar; |
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127 |
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128 return retval; |
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129 } |
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130 } |
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131 |
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132 octave_value |
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133 octave_scalar::convert_to_str_internal (bool, bool, char type) const |
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134 { |
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135 octave_value retval; |
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136 |
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137 if (xisnan (scalar)) |
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138 ::error ("invalid conversion from NaN to character"); |
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139 else |
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140 { |
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141 int ival = NINT (scalar); |
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142 |
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143 if (ival < 0 || ival > UCHAR_MAX) |
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144 { |
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145 // FIXME -- is there something better we could do? |
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146 |
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147 ival = 0; |
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148 |
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149 ::warning ("range error for conversion to character value"); |
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150 } |
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151 |
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152 retval = octave_value (std::string (1, static_cast<char> (ival)), type); |
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153 } |
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154 |
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155 return retval; |
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156 } |
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157 |
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158 bool |
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159 octave_scalar::save_ascii (std::ostream& os, bool& infnan_warned) |
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160 { |
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161 double d = double_value (); |
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162 |
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163 if (! infnan_warned && (xisnan (d) || xisinf (d))) |
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164 { |
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165 warning ("save: Inf or NaN values may not be reloadable"); |
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166 infnan_warned = true; |
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167 } |
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168 |
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169 octave_write_double (os, d); |
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170 |
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171 os << "\n"; |
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172 |
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173 return true; |
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174 } |
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175 |
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176 bool |
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177 octave_scalar::load_ascii (std::istream& is) |
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178 { |
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179 scalar = octave_read_double (is); |
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180 if (!is) |
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181 { |
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182 error ("load: failed to load scalar constant"); |
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183 return false; |
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184 } |
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185 |
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186 return true; |
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187 } |
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188 |
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189 bool |
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190 octave_scalar::save_binary (std::ostream& os, bool& /* save_as_floats */) |
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191 { |
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192 char tmp = LS_DOUBLE; |
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193 os.write (reinterpret_cast<char *> (&tmp), 1); |
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194 double dtmp = double_value (); |
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195 os.write (reinterpret_cast<char *> (&dtmp), 8); |
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196 |
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197 return true; |
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198 } |
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199 |
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200 bool |
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201 octave_scalar::load_binary (std::istream& is, bool swap, |
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202 oct_mach_info::float_format fmt) |
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203 { |
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204 char tmp; |
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205 if (! is.read (reinterpret_cast<char *> (&tmp), 1)) |
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206 return false; |
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207 |
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208 double dtmp; |
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209 read_doubles (is, &dtmp, static_cast<save_type> (tmp), 1, swap, fmt); |
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210 if (error_state || ! is) |
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211 return false; |
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212 |
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213 scalar = dtmp; |
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214 return true; |
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215 } |
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216 |
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217 #if defined (HAVE_HDF5) |
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218 |
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219 bool |
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220 octave_scalar::save_hdf5 (hid_t loc_id, const char *name, |
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221 bool /* save_as_floats */) |
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222 { |
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223 hsize_t dimens[3]; |
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224 hid_t space_hid = -1, data_hid = -1; |
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225 bool retval = true; |
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226 |
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227 space_hid = H5Screate_simple (0, dimens, 0); |
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228 if (space_hid < 0) return false; |
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229 |
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230 data_hid = H5Dcreate (loc_id, name, H5T_NATIVE_DOUBLE, space_hid, |
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231 H5P_DEFAULT); |
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232 if (data_hid < 0) |
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233 { |
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234 H5Sclose (space_hid); |
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235 return false; |
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236 } |
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237 |
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238 double tmp = double_value (); |
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239 retval = H5Dwrite (data_hid, H5T_NATIVE_DOUBLE, H5S_ALL, H5S_ALL, |
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240 H5P_DEFAULT, &tmp) >= 0; |
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241 |
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242 H5Dclose (data_hid); |
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243 H5Sclose (space_hid); |
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244 |
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245 return retval; |
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246 } |
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247 |
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248 bool |
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249 octave_scalar::load_hdf5 (hid_t loc_id, const char *name, |
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250 bool /* have_h5giterate_bug */) |
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251 { |
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252 hid_t data_hid = H5Dopen (loc_id, name); |
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253 hid_t space_id = H5Dget_space (data_hid); |
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254 |
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255 hsize_t rank = H5Sget_simple_extent_ndims (space_id); |
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256 |
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257 if (rank != 0) |
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258 { |
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259 H5Dclose (data_hid); |
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260 return false; |
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261 } |
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262 |
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263 double dtmp; |
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264 if (H5Dread (data_hid, H5T_NATIVE_DOUBLE, H5S_ALL, H5S_ALL, |
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265 H5P_DEFAULT, &dtmp) < 0) |
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266 { |
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267 H5Dclose (data_hid); |
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268 return false; |
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269 } |
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270 |
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271 scalar = dtmp; |
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272 |
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273 H5Dclose (data_hid); |
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274 |
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275 return true; |
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276 } |
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277 |
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278 #endif |
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279 |
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280 mxArray * |
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281 octave_scalar::as_mxArray (void) const |
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282 { |
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283 mxArray *retval = new mxArray (mxDOUBLE_CLASS, 1, 1, mxREAL); |
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284 |
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285 double *pr = static_cast<double *> (retval->get_data ()); |
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286 |
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287 pr[0] = scalar; |
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288 |
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289 return retval; |
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290 } |
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291 |
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292 /* |
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293 ;;; Local Variables: *** |
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294 ;;; mode: C++ *** |
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295 ;;; End: *** |
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296 */ |
