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annotate libinterp/octave-value/ov-flt-re-diag.cc @ 30565:83f9f8bda883

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maint: Merge stable to default.
author John W. Eaton <jwe@octave.org>
date Tue, 28 Dec 2021 18:59:33 -0500
parents 91c6288781ba 796f54d4ddbf
children aac27ad79be6
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2008-2022 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include "byte-swap.h"
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31
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32 #include "ov-flt-re-diag.h"
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33 #include "ov-base-diag.cc"
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34 #include "ov-float.h"
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35 #include "ov-flt-re-mat.h"
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36 #include "ls-utils.h"
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37
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38
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39 template class octave_base_diag<FloatDiagMatrix, FloatMatrix>;
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40
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41 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_float_diag_matrix,
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42 "float diagonal matrix", "single");
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43
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44 static octave_base_value *
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45 default_numeric_conversion_function (const octave_base_value& a)
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46 {
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47 const octave_float_diag_matrix& v
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48 = dynamic_cast<const octave_float_diag_matrix&> (a);
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49
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50 return new octave_float_matrix (v.float_matrix_value ());
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51 }
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52
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53 octave_base_value::type_conv_info
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54 octave_float_diag_matrix::numeric_conversion_function (void) const
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55 {
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56 return octave_base_value::type_conv_info (default_numeric_conversion_function,
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57 octave_float_matrix::static_type_id ());
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58 }
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59
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60 octave_base_value *
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61 octave_float_diag_matrix::try_narrowing_conversion (void)
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62 {
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63 octave_base_value *retval = nullptr;
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64
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65 if (m_matrix.nelem () == 1)
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66 retval = new octave_float_scalar (m_matrix (0, 0));
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67
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68 return retval;
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69 }
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70
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71 DiagMatrix
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72 octave_float_diag_matrix::diag_matrix_value (bool) const
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73 {
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74 return DiagMatrix (m_matrix);
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75 }
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76
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77 FloatDiagMatrix
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78 octave_float_diag_matrix::float_diag_matrix_value (bool) const
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79 {
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80 return m_matrix;
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81 }
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82
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83 ComplexDiagMatrix
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84 octave_float_diag_matrix::complex_diag_matrix_value (bool) const
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85 {
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86 return ComplexDiagMatrix (m_matrix);
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87 }
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88
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89 FloatComplexDiagMatrix
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90 octave_float_diag_matrix::float_complex_diag_matrix_value (bool) const
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91 {
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92 return FloatComplexDiagMatrix (m_matrix);
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93 }
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94
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95 octave_value
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96 octave_float_diag_matrix::as_double (void) const
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97 {
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98 return DiagMatrix (m_matrix);
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99 }
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100
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101 octave_value
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102 octave_float_diag_matrix::as_single (void) const
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103 {
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104 return m_matrix;
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105 }
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106
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107 octave_value
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108 octave_float_diag_matrix::as_int8 (void) const
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109 {
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110 return int8_array_value ();
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111 }
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112
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113 octave_value
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114 octave_float_diag_matrix::as_int16 (void) const
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115 {
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116 return int16_array_value ();
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117 }
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118
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119 octave_value
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120 octave_float_diag_matrix::as_int32 (void) const
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121 {
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122 return int32_array_value ();
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123 }
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124
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125 octave_value
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126 octave_float_diag_matrix::as_int64 (void) const
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127 {
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128 return int64_array_value ();
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129 }
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130
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131 octave_value
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132 octave_float_diag_matrix::as_uint8 (void) const
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133 {
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134 return uint8_array_value ();
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135 }
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136
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137 octave_value
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138 octave_float_diag_matrix::as_uint16 (void) const
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139 {
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140 return uint16_array_value ();
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141 }
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142
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143 octave_value
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144 octave_float_diag_matrix::as_uint32 (void) const
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145 {
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146 return uint32_array_value ();
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147 }
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148
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149 octave_value
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150 octave_float_diag_matrix::as_uint64 (void) const
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151 {
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152 return uint64_array_value ();
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153 }
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154
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155 octave_value
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156 octave_float_diag_matrix::map (unary_mapper_t umap) const
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157 {
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158 switch (umap)
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159 {
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160 case umap_abs:
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161 return m_matrix.abs ();
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162 case umap_real:
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163 case umap_conj:
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164 return m_matrix;
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165 case umap_imag:
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166 return DiagMatrix (m_matrix.rows (), m_matrix.cols (), 0.0);
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167 case umap_sqrt:
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168 {
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169 FloatComplexColumnVector tmp = m_matrix.extract_diag ().map<FloatComplex> (octave::math::rc_sqrt);
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170 FloatComplexDiagMatrix retval (tmp);
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171 retval.resize (m_matrix.rows (), m_matrix.columns ());
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172 return retval;
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173 }
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174 default:
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175 return to_dense ().map (umap);
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176 }
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177 }
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178
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179 bool
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180 octave_float_diag_matrix::save_binary (std::ostream& os,
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181 bool /* save_as_floats*/)
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182 {
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183
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184 int32_t r = m_matrix.rows ();
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185 int32_t c = m_matrix.cols ();
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186 os.write (reinterpret_cast<char *> (&r), 4);
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187 os.write (reinterpret_cast<char *> (&c), 4);
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188
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189 FloatMatrix m = FloatMatrix (m_matrix.extract_diag ());
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190 save_type st = LS_FLOAT;
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191 if (m_matrix.length () > 8192) // FIXME: make this configurable.
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192 {
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193 float max_val, min_val;
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194 if (m.all_integers (max_val, min_val))
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195 st = octave::get_save_type (max_val, min_val);
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196 }
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197
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198 const float *mtmp = m.data ();
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199 write_floats (os, mtmp, st, m.numel ());
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200
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201 return true;
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202 }
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203
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204 bool
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205 octave_float_diag_matrix::load_binary (std::istream& is, bool swap,
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206 octave::mach_info::float_format fmt)
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207 {
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208 int32_t r, c;
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209 char tmp;
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210 if (! (is.read (reinterpret_cast<char *> (&r), 4)
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211 && is.read (reinterpret_cast<char *> (&c), 4)
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212 && is.read (reinterpret_cast<char *> (&tmp), 1)))
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213 return false;
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214 if (swap)
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215 {
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216 swap_bytes<4> (&r);
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217 swap_bytes<4> (&c);
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218 }
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219
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220 FloatDiagMatrix m (r, c);
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221 float *re = m.fortran_vec ();
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222 octave_idx_type len = m.length ();
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223 read_floats (is, re, static_cast<save_type> (tmp), len, swap, fmt);
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224
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225 if (! is)
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226 return false;
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227
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228 m_matrix = m;
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229
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230 return true;
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231 }
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232
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233 bool
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234 octave_float_diag_matrix::chk_valid_scalar (const octave_value& val,
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235 float& x) const
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236 {
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237 bool retval = val.is_real_scalar ();
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238 if (retval)
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239 x = val.float_value ();
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240 return retval;
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241 }