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annotate src/ov-float.cc @ 8710:739141cde75a ss-3-1-52

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fix typo in Array-f.cc
author Jaroslav Hajek <highegg@gmail.com>
date Mon, 09 Feb 2009 21:51:31 +0100
parents f00578b495e9
children eb63fbe60fab
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1 /*
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2
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3 Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2004, 2005, 2006,
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4 2007 John W. Eaton
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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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 #include "lo-specfun.h"
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33 #include "lo-mappers.h"
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34
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35 #include "defun.h"
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36 #include "gripes.h"
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37 #include "oct-obj.h"
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38 #include "oct-stream.h"
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39 #include "ov-scalar.h"
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40 #include "ov-float.h"
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41 #include "ov-base.h"
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42 #include "ov-base-scalar.h"
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43 #include "ov-base-scalar.cc"
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44 #include "ov-flt-re-mat.h"
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45 #include "ov-typeinfo.h"
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46 #include "pr-output.h"
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47 #include "xdiv.h"
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48 #include "xpow.h"
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49 #include "ops.h"
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50
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51 #include "ls-oct-ascii.h"
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52 #include "ls-hdf5.h"
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53
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54 template class octave_base_scalar<float>;
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55
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56 DEFINE_OCTAVE_ALLOCATOR (octave_float_scalar);
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57
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58 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_float_scalar, "float scalar", "single");
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59
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60 octave_value
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61 octave_float_scalar::do_index_op (const octave_value_list& idx, bool resize_ok)
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62 {
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63 // FIXME -- this doesn't solve the problem of
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64 //
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65 // a = 1; a([1,1], [1,1], [1,1])
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66 //
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67 // and similar constructions. Hmm...
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68
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69 // FIXME -- using this constructor avoids narrowing the
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70 // 1x1 matrix back to a scalar value. Need a better solution
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71 // to this problem.
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72
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73 octave_value tmp (new octave_matrix (matrix_value ()));
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74
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75 return tmp.do_index_op (idx, resize_ok);
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76 }
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77
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78 octave_value
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79 octave_float_scalar::resize (const dim_vector& dv, bool fill) const
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80 {
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81 if (fill)
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82 {
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83 FloatNDArray retval (dv, NDArray::resize_fill_value());
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84
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85 if (dv.numel ())
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86 retval(0) = scalar;
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87
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88 return retval;
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89 }
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90 else
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91 {
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92 FloatNDArray retval (dv);
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93
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94 if (dv.numel ())
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95 retval(0) = scalar;
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96
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97 return retval;
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98 }
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99 }
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100
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101 octave_value
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102 octave_float_scalar::convert_to_str_internal (bool, bool, char type) const
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103 {
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104 octave_value retval;
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105
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106 if (xisnan (scalar))
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107 ::error ("invalid conversion from NaN to character");
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108 else
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109 {
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110 int ival = NINT (scalar);
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111
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112 if (ival < 0 || ival > UCHAR_MAX)
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113 {
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114 // FIXME -- is there something better we could do?
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115
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116 ival = 0;
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117
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118 ::warning ("range error for conversion to character value");
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119 }
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120
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121 retval = octave_value (std::string (1, static_cast<char> (ival)), type);
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122 }
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123
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124 return retval;
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125 }
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126
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127 bool
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128 octave_float_scalar::save_ascii (std::ostream& os)
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129 {
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130 float d = float_value ();
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131
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132 octave_write_float (os, d);
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133
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134 os << "\n";
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135
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136 return true;
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137 }
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138
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139 bool
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140 octave_float_scalar::load_ascii (std::istream& is)
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141 {
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142 scalar = octave_read_float (is);
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143 if (!is)
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144 {
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145 error ("load: failed to load scalar constant");
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146 return false;
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147 }
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148
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149 return true;
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150 }
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151
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152 bool
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153 octave_float_scalar::save_binary (std::ostream& os, bool& /* save_as_floats */)
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154 {
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155 char tmp = LS_FLOAT;
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156 os.write (reinterpret_cast<char *> (&tmp), 1);
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157 float dtmp = float_value ();
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158 os.write (reinterpret_cast<char *> (&dtmp), 4);
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159
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160 return true;
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161 }
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162
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163 bool
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164 octave_float_scalar::load_binary (std::istream& is, bool swap,
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165 oct_mach_info::float_format fmt)
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166 {
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167 char tmp;
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168 if (! is.read (reinterpret_cast<char *> (&tmp), 1))
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169 return false;
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170
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171 float dtmp;
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172 read_floats (is, &dtmp, static_cast<save_type> (tmp), 1, swap, fmt);
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173 if (error_state || ! is)
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174 return false;
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175
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176 scalar = dtmp;
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177 return true;
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178 }
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179
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180 #if defined (HAVE_HDF5)
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181
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182 bool
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183 octave_float_scalar::save_hdf5 (hid_t loc_id, const char *name,
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184 bool /* save_as_floats */)
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185 {
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186 hsize_t dimens[3];
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187 hid_t space_hid = -1, data_hid = -1;
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188 bool retval = true;
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189
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190 space_hid = H5Screate_simple (0, dimens, 0);
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191 if (space_hid < 0) return false;
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192
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193 data_hid = H5Dcreate (loc_id, name, H5T_NATIVE_FLOAT, space_hid,
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194 H5P_DEFAULT);
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195 if (data_hid < 0)
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196 {
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197 H5Sclose (space_hid);
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198 return false;
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199 }
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200
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201 float tmp = float_value ();
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202 retval = H5Dwrite (data_hid, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL,
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203 H5P_DEFAULT, &tmp) >= 0;
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204
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205 H5Dclose (data_hid);
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206 H5Sclose (space_hid);
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207
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208 return retval;
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209 }
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210
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211 bool
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212 octave_float_scalar::load_hdf5 (hid_t loc_id, const char *name,
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213 bool /* have_h5giterate_bug */)
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214 {
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215 hid_t data_hid = H5Dopen (loc_id, name);
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216 hid_t space_id = H5Dget_space (data_hid);
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217
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218 hsize_t rank = H5Sget_simple_extent_ndims (space_id);
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219
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220 if (rank != 0)
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221 {
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222 H5Dclose (data_hid);
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223 return false;
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224 }
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225
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226 float dtmp;
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227 if (H5Dread (data_hid, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL,
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228 H5P_DEFAULT, &dtmp) < 0)
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229 {
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230 H5Dclose (data_hid);
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231 return false;
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232 }
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233
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234 scalar = dtmp;
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235
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236 H5Dclose (data_hid);
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237
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238 return true;
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239 }
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240
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241 #endif
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242
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243 mxArray *
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244 octave_float_scalar::as_mxArray (void) const
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245 {
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246 mxArray *retval = new mxArray (mxSINGLE_CLASS, 1, 1, mxREAL);
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247
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248 float *pr = static_cast<float *> (retval->get_data ());
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249
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250 pr[0] = scalar;
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251
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252 return retval;
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253 }
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254
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255 #define SCALAR_MAPPER(MAP, FCN) \
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256 octave_value \
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257 octave_float_scalar::MAP (void) const \
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258 { \
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259 return octave_value (FCN (scalar)); \
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260 }
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261
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262 #define CD_SCALAR_MAPPER(MAP, RFCN, CFCN, L1, L2) \
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263 octave_value \
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264 octave_float_scalar::MAP (void) const \
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265 { \
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266 return (scalar < L1 || scalar > L2 \
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267 ? octave_value (CFCN (FloatComplex (scalar))) \
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268 : octave_value (RFCN (scalar))); \
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269 }
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270
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271 static float
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272 xconj (float x)
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273 {
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274 return x;
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275 }
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276
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277 SCALAR_MAPPER (erf, ::erff)
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278 SCALAR_MAPPER (erfc, ::erfcf)
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279 SCALAR_MAPPER (gamma, xgamma)
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280 CD_SCALAR_MAPPER (lgamma, xlgamma, xlgamma, 0.0, octave_Float_Inf)
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281 SCALAR_MAPPER (abs, ::fabsf)
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282 SCALAR_MAPPER (acos, ::acosf)
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283 CD_SCALAR_MAPPER (acosh, ::acoshf, ::acosh, 1.0, octave_Float_Inf)
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284 SCALAR_MAPPER (angle, ::arg)
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285 SCALAR_MAPPER (arg, ::arg)
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286 CD_SCALAR_MAPPER (asin, ::asinf, ::asin, -1.0, 1.0)
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287 SCALAR_MAPPER (asinh, ::asinhf)
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288 SCALAR_MAPPER (atan, ::atanf)
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289 CD_SCALAR_MAPPER (atanh, ::atanhf, ::atanh, -1.0, 1.0)
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290 SCALAR_MAPPER (ceil, ::ceilf)
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291 SCALAR_MAPPER (conj, xconj)
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292 SCALAR_MAPPER (cos, ::cosf)
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293 SCALAR_MAPPER (cosh, ::coshf)
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294 SCALAR_MAPPER (exp, ::expf)
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295 SCALAR_MAPPER (expm1, ::expm1f)
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296 SCALAR_MAPPER (fix, ::fix)
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297 SCALAR_MAPPER (floor, ::floorf)
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298 SCALAR_MAPPER (imag, ::imag)
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299 CD_SCALAR_MAPPER (log, ::logf, std::log, 0.0, octave_Float_Inf)
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300 CD_SCALAR_MAPPER (log2, xlog2, xlog2, 0.0, octave_Float_Inf)
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301 CD_SCALAR_MAPPER (log10, ::log10f, std::log10, 0.0, octave_Float_Inf)
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302 CD_SCALAR_MAPPER (log1p, ::log1pf, ::log1p, -1.0, octave_Float_Inf)
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303 SCALAR_MAPPER (real, ::real)
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304 SCALAR_MAPPER (round, xround)
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305 SCALAR_MAPPER (roundb, xroundb)
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306 SCALAR_MAPPER (signum, ::signum)
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307 SCALAR_MAPPER (sin, ::sinf)
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308 SCALAR_MAPPER (sinh, ::sinhf)
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309 CD_SCALAR_MAPPER (sqrt, ::sqrtf, std::sqrt, 0.0, octave_Float_Inf)
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310 SCALAR_MAPPER (tan, ::tanf)
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311 SCALAR_MAPPER (tanh, ::tanhf)
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312 SCALAR_MAPPER (finite, xfinite)
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313 SCALAR_MAPPER (isinf, xisinf)
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314 SCALAR_MAPPER (isna, octave_is_NA)
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315 SCALAR_MAPPER (isnan, xisnan)
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316
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317 /*
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318 ;;; Local Variables: ***
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319 ;;; mode: C++ ***
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320 ;;; End: ***
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321 */