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annotate src/ov-re-diag.cc @ 8650:a1ae2aae903e

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abs,real,imag,conj: use code from mx-inlines rather than the generic map
author Jaroslav Hajek <highegg@gmail.com>
date Mon, 02 Feb 2009 15:35:32 +0100
parents d95282fa0579
children 8dd69187c4a2
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1 /*
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2
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3 Copyright (C) 2008 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-re-diag.h"
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30 #include "ov-flt-re-diag.h"
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31 #include "ov-base-diag.cc"
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32 #include "ov-scalar.h"
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33 #include "ov-re-mat.h"
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34 #include "ls-utils.h"
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35
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36 template class octave_base_diag<DiagMatrix, Matrix>;
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37
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38 DEFINE_OCTAVE_ALLOCATOR (octave_diag_matrix);
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39
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40 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_diag_matrix, "diagonal matrix", "double");
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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_diag_matrix&);
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46
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47 return new octave_matrix (v.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_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_matrix::static_type_id ());
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55 }
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56
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57 static octave_base_value *
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58 default_numeric_demotion_function (const octave_base_value& a)
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59 {
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60 CAST_CONV_ARG (const octave_diag_matrix&);
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61
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62 return new octave_float_diag_matrix (v.float_diag_matrix_value ());
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63 }
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64
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65 octave_base_value::type_conv_info
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66 octave_diag_matrix::numeric_demotion_function (void) const
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67 {
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68 return octave_base_value::type_conv_info (default_numeric_demotion_function,
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69 octave_float_diag_matrix::static_type_id ());
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70 }
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71
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72 octave_base_value *
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73 octave_diag_matrix::try_narrowing_conversion (void)
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74 {
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75 octave_base_value *retval = 0;
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76
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77 // FIXME: the proxy mechanism of DiagArray2 causes problems here.
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78 if (matrix.nelem () == 1)
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79 retval = new octave_scalar (double (matrix (0, 0)));
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80
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81 return retval;
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82 }
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83
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84 DiagMatrix
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85 octave_diag_matrix::diag_matrix_value (bool) const
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86 {
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87 return matrix;
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88 }
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89
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90 FloatDiagMatrix
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91 octave_diag_matrix::float_diag_matrix_value (bool) const
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92 {
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93 return FloatDiagMatrix (matrix);
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94 }
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95
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96 ComplexDiagMatrix
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97 octave_diag_matrix::complex_diag_matrix_value (bool) const
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98 {
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99 return ComplexDiagMatrix (matrix);
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100 }
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101
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102 FloatComplexDiagMatrix
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103 octave_diag_matrix::float_complex_diag_matrix_value (bool) const
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104 {
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105 return FloatComplexDiagMatrix (matrix);
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106 }
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107
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108 octave_value
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109 octave_diag_matrix::abs (void) const
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110 {
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111 return matrix.abs ();
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112 }
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113
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114 octave_value
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115 octave_diag_matrix::real (void) const
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116 {
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117 return matrix;
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118 }
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119
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120 octave_value
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121 octave_diag_matrix::conj (void) const
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122 {
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123 return matrix;
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124 }
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125
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126 octave_value
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127 octave_diag_matrix::imag (void) const
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128 {
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129 return DiagMatrix (matrix.rows (), matrix.cols (), 0.0);
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130 }
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131
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132 bool
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133 octave_diag_matrix::save_binary (std::ostream& os, bool& save_as_floats)
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134 {
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135
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136 int32_t r = matrix.rows (), c = matrix.cols ();
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137 os.write (reinterpret_cast<char *> (&r), 4);
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138 os.write (reinterpret_cast<char *> (&c), 4);
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139
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140 Matrix m = Matrix (matrix.diag ());
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141 save_type st = LS_DOUBLE;
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142 if (save_as_floats)
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143 {
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144 if (m.too_large_for_float ())
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145 {
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146 warning ("save: some values too large to save as floats --");
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147 warning ("save: saving as doubles instead");
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148 }
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149 else
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150 st = LS_FLOAT;
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151 }
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152 else if (matrix.length () > 8192) // FIXME -- make this configurable.
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153 {
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154 double max_val, min_val;
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155 if (m.all_integers (max_val, min_val))
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156 st = get_save_type (max_val, min_val);
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157 }
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158
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159 const double *mtmp = m.data ();
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160 write_doubles (os, mtmp, st, m.numel ());
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161
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162 return true;
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163 }
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164
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165 bool
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166 octave_diag_matrix::load_binary (std::istream& is, bool swap,
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167 oct_mach_info::float_format fmt)
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168 {
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169 int32_t r, c;
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170 char tmp;
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171 if (! (is.read (reinterpret_cast<char *> (&r), 4)
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172 && is.read (reinterpret_cast<char *> (&c), 4)
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173 && is.read (reinterpret_cast<char *> (&tmp), 1)))
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174 return false;
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175 if (swap)
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176 {
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177 swap_bytes<4> (&r);
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178 swap_bytes<4> (&c);
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179 }
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180
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181 DiagMatrix m (r, c);
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182 double *re = m.fortran_vec ();
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183 octave_idx_type len = m.length ();
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184 read_doubles (is, re, static_cast<save_type> (tmp), len, swap, fmt);
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185 if (error_state || ! is)
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186 return false;
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187 matrix = m;
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188
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189 return true;
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190 }
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191
8398
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192 bool
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193 octave_diag_matrix::chk_valid_scalar (const octave_value& val,
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194 double& x) const
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195 {
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196 bool retval = val.is_real_scalar ();
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197 if (retval)
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198 x = val.double_value ();
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199 return retval;
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200 }