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annotate libinterp/octave-value/ov-float.cc @ 15195:2fc554ffbc28

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split libinterp from src * libinterp: New directory. Move all files from src directory here except Makefile.am, main.cc, main-cli.cc, mkoctfile.in.cc, mkoctfilr.in.sh, octave-config.in.cc, octave-config.in.sh. * libinterp/Makefile.am: New file, extracted from src/Makefile.am. * src/Makefile.am: Delete everything except targets and definitions needed to build and link main and utility programs. * Makefile.am (SUBDIRS): Include libinterp in the list. * autogen.sh: Run config-module.sh in libinterp/dldfcn directory, not src/dldfcn directory. * configure.ac (AC_CONFIG_SRCDIR): Use libinterp/octave.cc, not src/octave.cc. (DL_LDFLAGS, LIBOCTINTERP): Use libinterp, not src. (AC_CONFIG_FILES): Include libinterp/Makefile in the list. * find-docstring-files.sh: Look in libinterp, not src. * gui/src/Makefile.am (liboctgui_la_CPPFLAGS): Find header files in libinterp, not src.
author John W. Eaton <jwe@octave.org>
date Sat, 18 Aug 2012 16:23:39 -0400
parents src/octave-value/ov-float.cc@62a35ae7d6a2
children 9020dddc925a
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1 /*
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2
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3 Copyright (C) 1996-2012 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 3 of the License, or (at your
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10 option) any 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, see
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19 <http://www.gnu.org/licenses/>.
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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 #include "lo-specfun.h"
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32 #include "lo-mappers.h"
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33
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34 #include "defun.h"
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35 #include "gripes.h"
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36 #include "mxarray.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_float_matrix (float_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, 0);
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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::diag (octave_idx_type m, octave_idx_type n) const
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103 {
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104 return FloatDiagMatrix (Array<float> (dim_vector (1, 1), scalar), m, n);
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105 }
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106
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107 octave_value
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108 octave_float_scalar::convert_to_str_internal (bool, bool, char type) const
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109 {
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110 octave_value retval;
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111
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112 if (xisnan (scalar))
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113 gripe_nan_to_character_conversion ();
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114 else
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115 {
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116 int ival = NINT (scalar);
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117
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118 if (ival < 0 || ival > UCHAR_MAX)
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119 {
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120 // FIXME -- is there something better we could do?
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121
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122 ival = 0;
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123
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124 ::warning ("range error for conversion to character value");
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125 }
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126
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127 retval = octave_value (std::string (1, static_cast<char> (ival)), type);
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128 }
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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 bool
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134 octave_float_scalar::save_ascii (std::ostream& os)
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135 {
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136 float d = float_value ();
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137
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138 octave_write_float (os, d);
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139
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140 os << "\n";
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141
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142 return true;
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143 }
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144
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145 bool
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146 octave_float_scalar::load_ascii (std::istream& is)
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147 {
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148 scalar = octave_read_value<float> (is);
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149 if (!is)
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150 {
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151 error ("load: failed to load scalar constant");
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152 return false;
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153 }
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154
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155 return true;
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156 }
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157
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158 bool
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159 octave_float_scalar::save_binary (std::ostream& os, bool& /* save_as_floats */)
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160 {
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161 char tmp = LS_FLOAT;
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162 os.write (reinterpret_cast<char *> (&tmp), 1);
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163 float dtmp = float_value ();
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164 os.write (reinterpret_cast<char *> (&dtmp), 4);
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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_float_scalar::load_binary (std::istream& is, bool swap,
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171 oct_mach_info::float_format fmt)
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172 {
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173 char tmp;
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174 if (! is.read (reinterpret_cast<char *> (&tmp), 1))
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175 return false;
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176
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177 float dtmp;
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178 read_floats (is, &dtmp, static_cast<save_type> (tmp), 1, swap, fmt);
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179 if (error_state || ! is)
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180 return false;
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181
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182 scalar = dtmp;
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183 return true;
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184 }
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185
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186 #if defined (HAVE_HDF5)
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187
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188 bool
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189 octave_float_scalar::save_hdf5 (hid_t loc_id, const char *name,
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190 bool /* save_as_floats */)
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191 {
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192 hsize_t dimens[3];
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193 hid_t space_hid = -1, data_hid = -1;
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194 bool retval = true;
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195
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196 space_hid = H5Screate_simple (0, dimens, 0);
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197 if (space_hid < 0) return false;
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198 #if HAVE_HDF5_18
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199 data_hid = H5Dcreate (loc_id, name, H5T_NATIVE_FLOAT, space_hid,
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200 H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
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201 #else
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202 data_hid = H5Dcreate (loc_id, name, H5T_NATIVE_FLOAT, space_hid,
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203 H5P_DEFAULT);
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204 #endif
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205 if (data_hid < 0)
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206 {
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207 H5Sclose (space_hid);
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208 return false;
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209 }
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210
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211 float tmp = float_value ();
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212 retval = H5Dwrite (data_hid, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL,
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213 H5P_DEFAULT, &tmp) >= 0;
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214
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215 H5Dclose (data_hid);
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216 H5Sclose (space_hid);
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217
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218 return retval;
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219 }
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220
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221 bool
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222 octave_float_scalar::load_hdf5 (hid_t loc_id, const char *name)
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223 {
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224 #if HAVE_HDF5_18
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225 hid_t data_hid = H5Dopen (loc_id, name, H5P_DEFAULT);
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226 #else
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227 hid_t data_hid = H5Dopen (loc_id, name);
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228 #endif
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229 hid_t space_id = H5Dget_space (data_hid);
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230
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231 hsize_t rank = H5Sget_simple_extent_ndims (space_id);
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232
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233 if (rank != 0)
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234 {
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235 H5Dclose (data_hid);
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236 return false;
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237 }
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238
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239 float dtmp;
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240 if (H5Dread (data_hid, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL,
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241 H5P_DEFAULT, &dtmp) < 0)
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242 {
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243 H5Dclose (data_hid);
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244 return false;
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245 }
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246
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247 scalar = dtmp;
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248
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249 H5Dclose (data_hid);
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250
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251 return true;
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252 }
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253
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254 #endif
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255
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256 mxArray *
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257 octave_float_scalar::as_mxArray (void) const
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258 {
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259 mxArray *retval = new mxArray (mxSINGLE_CLASS, 1, 1, mxREAL);
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260
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261 float *pr = static_cast<float *> (retval->get_data ());
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262
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263 pr[0] = scalar;
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264
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265 return retval;
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266 }
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267
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268 octave_value
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269 octave_float_scalar::map (unary_mapper_t umap) const
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270 {
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271 switch (umap)
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272 {
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273 case umap_imag:
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274 return 0.0f;
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275
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276 case umap_real:
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277 case umap_conj:
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278 return scalar;
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279
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280 #define SCALAR_MAPPER(UMAP, FCN) \
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281 case umap_ ## UMAP: \
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282 return octave_value (FCN (scalar))
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283
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284 SCALAR_MAPPER (abs, ::fabsf);
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285 SCALAR_MAPPER (acos, rc_acos);
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286 SCALAR_MAPPER (acosh, rc_acosh);
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287 SCALAR_MAPPER (angle, ::arg);
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288 SCALAR_MAPPER (arg, ::arg);
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289 SCALAR_MAPPER (asin, rc_asin);
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290 SCALAR_MAPPER (asinh, ::asinhf);
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291 SCALAR_MAPPER (atan, ::atanf);
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292 SCALAR_MAPPER (atanh, rc_atanh);
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293 SCALAR_MAPPER (erf, ::erff);
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294 SCALAR_MAPPER (erfinv, ::erfinv);
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295 SCALAR_MAPPER (erfcinv, ::erfcinv);
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296 SCALAR_MAPPER (erfc, ::erfcf);
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297 SCALAR_MAPPER (erfcx, ::erfcx);
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298 SCALAR_MAPPER (gamma, xgamma);
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299 SCALAR_MAPPER (lgamma, rc_lgamma);
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300 SCALAR_MAPPER (cbrt, ::cbrtf);
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301 SCALAR_MAPPER (ceil, ::ceilf);
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302 SCALAR_MAPPER (cos, ::cosf);
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303 SCALAR_MAPPER (cosh, ::coshf);
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304 SCALAR_MAPPER (exp, ::expf);
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305 SCALAR_MAPPER (expm1, ::expm1f);
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306 SCALAR_MAPPER (fix, ::fix);
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307 SCALAR_MAPPER (floor, ::floorf);
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308 SCALAR_MAPPER (log, rc_log);
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309 SCALAR_MAPPER (log2, rc_log2);
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310 SCALAR_MAPPER (log10, rc_log10);
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311 SCALAR_MAPPER (log1p, rc_log1p);
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312 SCALAR_MAPPER (round, xround);
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313 SCALAR_MAPPER (roundb, xroundb);
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314 SCALAR_MAPPER (signum, ::signum);
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315 SCALAR_MAPPER (sin, ::sinf);
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316 SCALAR_MAPPER (sinh, ::sinhf);
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317 SCALAR_MAPPER (sqrt, rc_sqrt);
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318 SCALAR_MAPPER (tan, ::tanf);
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319 SCALAR_MAPPER (tanh, ::tanhf);
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320 SCALAR_MAPPER (finite, xfinite);
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321 SCALAR_MAPPER (isinf, xisinf);
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322 SCALAR_MAPPER (isna, octave_is_NA);
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323 SCALAR_MAPPER (isnan, xisnan);
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324
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325 default:
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326 return octave_base_value::map (umap);
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327 }
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328 }
10670
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329
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330 bool
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331 octave_float_scalar::fast_elem_insert_self (void *where, builtin_type_t btyp) const
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332 {
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333
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334 // Support inline real->complex conversion.
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335 if (btyp == btyp_float)
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336 {
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337 *(reinterpret_cast<float *>(where)) = scalar;
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338 return true;
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339 }
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340 else if (btyp == btyp_float_complex)
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341 {
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342 *(reinterpret_cast<FloatComplex *>(where)) = scalar;
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343 return true;
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344 }
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345 else
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346 return false;
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347 }