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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2020.
author John W. Eaton <jwe@octave.org>
date Mon, 06 Jan 2020 22:29:51 -0500
parents b442ec6dda5c
children bd51beb6205e
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1 /*
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2
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1891570abac8 update Octave Project Developers copyright for the new year
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3 Copyright (C) 1996-2020 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 distribution
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6 or <https://octave.org/COPYRIGHT.html/>.
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7
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8
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9 This file is part of Octave.
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10
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11 Octave is free software: you can redistribute it and/or modify it
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12 under the terms of the GNU General Public License as published by
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13 the Free Software Foundation, either version 3 of the License, or
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14 (at your option) any later version.
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15
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16 Octave is distributed in the hope that it will be useful, but
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17 WITHOUT ANY WARRANTY; without even the implied warranty of
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18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 GNU General Public License for more details.
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20
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21 You should have received a copy of the GNU General Public License
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22 along with Octave; see the file COPYING. If not, see
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23 <https://www.gnu.org/licenses/>.
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24
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25 */
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26
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27 #if ! defined (octave_lo_ieee_h)
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28 #define octave_lo_ieee_h 1
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29
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30 #include <cmath>
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31
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32 #include "octave-config.h"
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33
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34 #if defined (__cplusplus)
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35 extern "C" {
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36 #endif
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37
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38 /* Octave's idea of infinity. */
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39 #define octave_Inf (lo_ieee_inf_value ())
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40
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41 /* Octave's idea of a missing value. */
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42 #define octave_NA (lo_ieee_na_value ())
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43
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44 /* Octave's idea of not a number. */
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45 #define octave_NaN (lo_ieee_nan_value ())
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46
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47 /* Octave's idea of infinity. */
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48 #define octave_Float_Inf (lo_ieee_float_inf_value ())
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49
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50 /* Octave's idea of a missing value. */
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51 #define octave_Float_NA (lo_ieee_float_na_value ())
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53 /* Octave's idea of not a number. */
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54 #define octave_Float_NaN (lo_ieee_float_nan_value ())
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55
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56 /* FIXME: This code assumes that a double has twice the
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57 number of bits as an int */
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58
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59 typedef union
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60 {
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61 double value;
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62 unsigned int word[2];
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63 } lo_ieee_double;
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64
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65 typedef union
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66 {
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67 float value;
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68 unsigned int word;
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69 } lo_ieee_float;
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70
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71 #define LO_IEEE_NA_HW_OLD 0x7ff00000
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72 #define LO_IEEE_NA_LW_OLD 1954
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73 #define LO_IEEE_NA_HW 0x7FF840F4
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74 #define LO_IEEE_NA_LW 0x40000000
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75 #define LO_IEEE_NA_FLOAT 0x7FC207A2
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77 extern OCTAVE_API void octave_ieee_init (void);
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79 inline int __lo_ieee_isnan (double x) { return std::isnan (x); }
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80 inline int __lo_ieee_finite (double x) { return std::isfinite (x); }
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81 inline int __lo_ieee_isinf (double x) { return std::isinf (x); }
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83 extern OCTAVE_API int __lo_ieee_is_NA (double);
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84 extern OCTAVE_API int __lo_ieee_is_old_NA (double);
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85 extern OCTAVE_API double __lo_ieee_replace_old_NA (double);
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86
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87 extern OCTAVE_API double lo_ieee_inf_value (void);
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88 extern OCTAVE_API double lo_ieee_na_value (void);
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89 extern OCTAVE_API double lo_ieee_nan_value (void);
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90
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91 inline int __lo_ieee_signbit (double x) { return std::signbit (x); }
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93 inline int __lo_ieee_float_isnan (float x) { return std::isnan (x); }
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94 inline int __lo_ieee_float_finite (float x) { return std::isfinite (x); }
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95 inline int __lo_ieee_float_isinf (float x) { return std::isinf (x); }
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96
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97 extern OCTAVE_API int __lo_ieee_float_is_NA (float);
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98
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99 extern OCTAVE_API float lo_ieee_float_inf_value (void);
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100 extern OCTAVE_API float lo_ieee_float_na_value (void);
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101 extern OCTAVE_API float lo_ieee_float_nan_value (void);
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102
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103 inline int __lo_ieee_float_signbit (float x) { return std::signbit (x); }
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104
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105 #if defined (__cplusplus)
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106 }
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107 #endif
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108
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109 #define lo_ieee_isnan(x) \
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110 (sizeof (x) == sizeof (float) \
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111 ? __lo_ieee_float_isnan (x) : __lo_ieee_isnan (x))
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112
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113 #define lo_ieee_finite(x) \
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114 (sizeof (x) == sizeof (float) \
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115 ? __lo_ieee_float_finite (x) : __lo_ieee_finite (x))
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116
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117 #define lo_ieee_isinf(x) \
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118 (sizeof (x) == sizeof (float) \
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119 ? __lo_ieee_float_isinf (x) : __lo_ieee_isinf (x))
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120
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121 #define lo_ieee_is_NA(x) \
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122 (sizeof (x) == sizeof (float) \
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123 ? __lo_ieee_float_is_NA (x) : __lo_ieee_is_NA (x))
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124
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125 #define lo_ieee_is_NaN_or_NA(x) \
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126 (sizeof (x) == sizeof (float) \
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127 ? __lo_ieee_float_is_NaN_or_NA (x) : __lo_ieee_is_NaN_or_NA (x))
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128
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129 #define lo_ieee_signbit(x) \
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130 (sizeof (x) == sizeof (float) \
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131 ? __lo_ieee_float_signbit (x) : __lo_ieee_signbit (x))
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132
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133 #if defined (__cplusplus)
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134
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135 namespace octave
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136 {
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137 template <typename T>
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138 struct numeric_limits
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139 {
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140 static T NA (void) { return static_cast<T> (0); }
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141 static T NaN (void) { return static_cast<T> (0); }
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142 static T Inf (void) { return static_cast<T> (0); }
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143 };
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144
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145 template <>
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146 struct numeric_limits<double>
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147 {
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148 static double NA (void) { return octave_NA; }
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149 static double NaN (void) { return octave_NaN; }
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150 static double Inf (void) { return octave_Inf; }
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151 };
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152
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153 template <>
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154 struct numeric_limits<float>
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155 {
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156 static float NA (void) { return octave_Float_NA; }
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157 static float NaN (void) { return octave_Float_NaN; }
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158 static float Inf (void) { return octave_Float_Inf; }
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159 };
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160 }
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161
1967
4cb6aaa0f2c7 [project @ 1996-02-17 02:54:24 by jwe]
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162 #endif
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163
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164 #endif