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annotate src/ov-flt-re-diag.cc @ 12134:6c54ad0fde04 release-3-4-x ss-3-3-90

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update copyright and version info for release branch
author John W. Eaton <jwe@octave.org>
date Sat, 22 Jan 2011 13:50:32 -0500
parents 12df7854fa7c
children 72c96de7a403
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1 /*
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2
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3 Copyright (C) 2008-2011 Jaroslav Hajek
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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 "byte-swap.h"
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28
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29 #include "ov-flt-re-diag.h"
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30 #include "ov-base-diag.cc"
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31 #include "ov-float.h"
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32 #include "ov-flt-re-mat.h"
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33 #include "ls-utils.h"
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34
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35 template class octave_base_diag<FloatDiagMatrix, FloatMatrix>;
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36
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37 DEFINE_OCTAVE_ALLOCATOR (octave_float_diag_matrix);
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38
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39 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_float_diag_matrix,
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40 "float diagonal matrix", "single");
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41
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42 static octave_base_value *
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43 default_numeric_conversion_function (const octave_base_value& a)
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44 {
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45 CAST_CONV_ARG (const octave_float_diag_matrix&);
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46
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47 return new octave_float_matrix (v.float_matrix_value ());
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48 }
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49
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50 octave_base_value::type_conv_info
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51 octave_float_diag_matrix::numeric_conversion_function (void) const
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52 {
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53 return octave_base_value::type_conv_info (default_numeric_conversion_function,
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54 octave_float_matrix::static_type_id ());
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55 }
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56
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57 octave_base_value *
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58 octave_float_diag_matrix::try_narrowing_conversion (void)
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59 {
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60 octave_base_value *retval = 0;
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61
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62 if (matrix.nelem () == 1)
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63 retval = new octave_float_scalar (matrix (0, 0));
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64
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65 return retval;
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66 }
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67
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68 DiagMatrix
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69 octave_float_diag_matrix::diag_matrix_value (bool) const
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70 {
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71 return DiagMatrix (matrix);
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72 }
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73
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74 FloatDiagMatrix
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75 octave_float_diag_matrix::float_diag_matrix_value (bool) const
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76 {
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77 return matrix;
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78 }
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79
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80 ComplexDiagMatrix
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81 octave_float_diag_matrix::complex_diag_matrix_value (bool) const
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82 {
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83 return ComplexDiagMatrix (matrix);
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84 }
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85
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86 FloatComplexDiagMatrix
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87 octave_float_diag_matrix::float_complex_diag_matrix_value (bool) const
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88 {
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89 return FloatComplexDiagMatrix (matrix);
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90 }
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91
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92 octave_value
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93 octave_float_diag_matrix::map (unary_mapper_t umap) const
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94 {
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95 switch (umap)
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96 {
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97 case umap_abs:
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98 return matrix.abs ();
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99 case umap_real:
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100 case umap_conj:
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101 return matrix;
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102 case umap_imag:
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103 return DiagMatrix (matrix.rows (), matrix.cols (), 0.0);
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104 case umap_sqrt:
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105 {
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106 FloatComplexColumnVector tmp = matrix.diag ().map<FloatComplex> (rc_sqrt);
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107 FloatComplexDiagMatrix retval (tmp);
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108 retval.resize (matrix.rows (), matrix.columns ());
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109 return retval;
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110 }
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111 default:
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112 return to_dense ().map (umap);
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113 }
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114 }
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115
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116 bool
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117 octave_float_diag_matrix::save_binary (std::ostream& os,
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118 bool& /* save_as_floats*/)
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119 {
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120
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121 int32_t r = matrix.rows (), c = matrix.cols ();
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122 os.write (reinterpret_cast<char *> (&r), 4);
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123 os.write (reinterpret_cast<char *> (&c), 4);
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124
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125 FloatMatrix m = FloatMatrix (matrix.diag ());
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126 save_type st = LS_FLOAT;
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127 if (matrix.length () > 8192) // FIXME -- make this configurable.
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128 {
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129 float max_val, min_val;
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130 if (m.all_integers (max_val, min_val))
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131 st = get_save_type (max_val, min_val);
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132 }
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133
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134 const float *mtmp = m.data ();
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135 write_floats (os, mtmp, st, m.numel ());
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136
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137 return true;
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138 }
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139
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140 bool
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141 octave_float_diag_matrix::load_binary (std::istream& is, bool swap,
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142 oct_mach_info::float_format fmt)
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143 {
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144 int32_t r, c;
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145 char tmp;
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146 if (! (is.read (reinterpret_cast<char *> (&r), 4)
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147 && is.read (reinterpret_cast<char *> (&c), 4)
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148 && is.read (reinterpret_cast<char *> (&tmp), 1)))
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149 return false;
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150 if (swap)
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151 {
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152 swap_bytes<4> (&r);
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153 swap_bytes<4> (&c);
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154 }
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155
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156 FloatDiagMatrix m (r, c);
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157 float *re = m.fortran_vec ();
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158 octave_idx_type len = m.length ();
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159 read_floats (is, re, static_cast<save_type> (tmp), len, swap, fmt);
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160 if (error_state || ! is)
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161 return false;
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162 matrix = m;
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163
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164 return true;
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165 }
8398
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166
11586
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167 bool
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168 octave_float_diag_matrix::chk_valid_scalar (const octave_value& val,
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169 float& x) const
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170 {
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171 bool retval = val.is_real_scalar ();
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172 if (retval)
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173 x = val.float_value ();
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174 return retval;
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175 }