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1 /* |
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2 |
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3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, |
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4 2006, 2007 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 3 of the License, or (at your |
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11 option) any later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, see |
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20 <http://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <cctype> |
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29 #include <cstdlib> |
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30 |
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31 #include <iostream> |
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32 #include <vector> |
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33 |
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34 #include "byte-swap.h" |
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35 #include "data-conv.h" |
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36 #include "lo-error.h" |
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37 |
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38 template void swap_bytes<2> (volatile void *, int); |
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39 template void swap_bytes<4> (volatile void *, int); |
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40 template void swap_bytes<8> (volatile void *, int); |
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41 |
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42 #if defined HAVE_LONG_LONG_INT |
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43 #define FIND_SIZED_INT_TYPE(VAL, BITS, TQ, Q) \ |
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44 do \ |
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45 { \ |
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46 int sz = BITS / CHAR_BIT; \ |
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47 if (sizeof (TQ char) == sz) \ |
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48 VAL = oct_data_conv::dt_ ## Q ## char; \ |
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49 else if (sizeof (TQ short) == sz) \ |
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50 VAL = oct_data_conv::dt_ ## Q ## short; \ |
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51 else if (sizeof (TQ int) == sz) \ |
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52 VAL = oct_data_conv::dt_ ## Q ## int; \ |
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53 else if (sizeof (TQ long) == sz) \ |
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54 VAL = oct_data_conv::dt_ ## Q ## long; \ |
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55 else if (sizeof (TQ long long) == sz) \ |
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56 VAL = oct_data_conv::dt_ ## Q ## longlong; \ |
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57 else \ |
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58 VAL = oct_data_conv::dt_unknown; \ |
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59 } \ |
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60 while (0) |
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61 #else |
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62 #define FIND_SIZED_INT_TYPE(VAL, BITS, TQ, Q) \ |
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63 do \ |
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64 { \ |
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65 int sz = BITS / CHAR_BIT; \ |
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66 if (sizeof (TQ char) == sz) \ |
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67 VAL = oct_data_conv::dt_ ## Q ## char; \ |
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68 else if (sizeof (TQ short) == sz) \ |
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69 VAL = oct_data_conv::dt_ ## Q ## short; \ |
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70 else if (sizeof (TQ int) == sz) \ |
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71 VAL = oct_data_conv::dt_ ## Q ## int; \ |
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72 else if (sizeof (TQ long) == sz) \ |
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73 VAL = oct_data_conv::dt_ ## Q ## long; \ |
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74 else \ |
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75 VAL = oct_data_conv::dt_unknown; \ |
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76 } \ |
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77 while (0) |
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78 #endif |
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79 |
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80 #define FIND_SIZED_FLOAT_TYPE(VAL, BITS) \ |
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81 do \ |
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82 { \ |
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83 int sz = BITS / CHAR_BIT; \ |
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84 if (sizeof (float) == sz) \ |
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85 VAL = oct_data_conv::dt_float; \ |
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86 else if (sizeof (double) == sz) \ |
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87 VAL = oct_data_conv::dt_double; \ |
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88 else \ |
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89 VAL = oct_data_conv::dt_unknown; \ |
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90 } \ |
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91 while (0) |
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92 |
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93 // I'm not sure it is worth the trouble, but let's use a lookup table |
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94 // for the types that are supposed to be a specific number of bits |
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95 // wide. Given the macros above, this should work as long as CHAR_BIT |
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96 // is a multiple of 8 and there are types with the right sizes. |
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97 // |
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98 // The sized data type lookup table has the following format: |
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99 // |
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100 // bits |
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101 // +----+----+----+----+ |
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102 // | 8 | 16 | 32 | 64 | |
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103 // +----+----+----+----+ |
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104 // signed integer | | | | | |
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105 // +----+----+----+----+ |
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106 // unsigned integer | | | | | |
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107 // +----+----+----+----+ |
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108 // floating point | | | | | |
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109 // +----+----+----+----+ |
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110 // |
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111 // So, the 0,3 element is supposed to contain the oct_data_conv enum |
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112 // value corresponding to the correct native data type for a signed |
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113 // 32-bit integer. |
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114 |
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115 static void |
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116 init_sized_type_lookup_table (oct_data_conv::data_type table[3][4]) |
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117 { |
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118 int bits = 8; |
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119 |
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120 for (int i = 0; i < 4; i++) |
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121 { |
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122 FIND_SIZED_INT_TYPE (table[0][i], bits, , ); |
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123 |
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124 FIND_SIZED_INT_TYPE (table[1][i], bits, unsigned, u); |
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125 |
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126 FIND_SIZED_FLOAT_TYPE (table[2][i], bits); |
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127 |
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128 bits *= 2; |
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129 } |
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130 } |
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131 |
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132 static std::string |
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133 strip_spaces (const std::string& str) |
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134 { |
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135 int n = str.length (); |
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136 |
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137 int k = 0; |
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138 |
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139 std::string s (n, ' '); |
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140 |
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141 for (int i = 0; i < n; i++) |
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142 if (! isspace (str[i])) |
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143 s[k++] = tolower (str[i]); |
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144 |
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145 s.resize (k); |
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146 |
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147 return s; |
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148 } |
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149 |
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150 #define GET_SIZED_INT_TYPE(T, U) \ |
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151 do \ |
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152 { \ |
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153 switch (sizeof (T)) \ |
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154 { \ |
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155 case 1: \ |
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156 retval = dt_ ## U ## int8; \ |
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157 break; \ |
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158 \ |
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159 case 2: \ |
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160 retval = dt_ ## U ## int16; \ |
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161 break; \ |
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162 \ |
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163 case 4: \ |
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164 retval = dt_ ## U ## int32; \ |
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165 break; \ |
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166 \ |
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167 case 8: \ |
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168 retval = dt_ ## U ## int64; \ |
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169 break; \ |
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170 \ |
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171 default: \ |
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172 retval = dt_unknown; \ |
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173 break; \ |
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174 } \ |
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175 } \ |
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176 while (0) |
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177 |
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178 oct_data_conv::data_type |
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179 oct_data_conv::string_to_data_type (const std::string& str) |
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180 { |
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181 data_type retval = dt_unknown; |
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182 |
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183 static bool initialized = false; |
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184 |
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185 static data_type sized_type_table[3][4]; |
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186 |
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187 if (! initialized) |
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188 { |
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189 init_sized_type_lookup_table (sized_type_table); |
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190 |
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191 initialized = true; |
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192 } |
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193 |
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194 std::string s = strip_spaces (str); |
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195 |
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196 if (s == "int8" || s == "integer*1") |
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197 retval = dt_int8; |
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198 else if (s == "uint8") |
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199 retval = dt_uint8; |
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200 else if (s == "int16" || s == "integer*2") |
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201 retval = dt_int16; |
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202 else if (s == "uint16") |
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203 retval = dt_uint16; |
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204 else if (s == "int32" || s == "integer*4") |
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205 retval = dt_int32; |
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206 else if (s == "uint32") |
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207 retval = dt_uint32; |
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208 else if (s == "int64" || s == "integer*8") |
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209 retval = dt_int64; |
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210 else if (s == "uint64") |
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211 retval = dt_uint64; |
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212 else if (s == "single" || s == "float32" || s == "real*4") |
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213 retval = dt_single; |
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214 else if (s == "double" || s == "float64" || s == "real*8") |
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215 retval = dt_double; |
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216 else if (s == "char" || s == "char*1") |
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217 retval = dt_char; |
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218 else if (s == "schar" || s == "signedchar") |
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219 retval = dt_schar; |
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220 else if (s == "uchar" || s == "unsignedchar") |
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221 retval = dt_uchar; |
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222 else if (s == "short") |
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223 GET_SIZED_INT_TYPE (short, ); |
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224 else if (s == "ushort" || s == "unsignedshort") |
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225 GET_SIZED_INT_TYPE (unsigned short, u); |
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226 else if (s == "int") |
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227 GET_SIZED_INT_TYPE (int, ); |
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228 else if (s == "uint" || s == "unsignedint") |
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229 GET_SIZED_INT_TYPE (unsigned int, u); |
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230 else if (s == "long") |
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231 GET_SIZED_INT_TYPE (long, ); |
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232 else if (s == "ulong" || s == "unsignedlong") |
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233 GET_SIZED_INT_TYPE (unsigned long, u); |
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234 else if (s == "longlong") |
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235 GET_SIZED_INT_TYPE (long long, ); |
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236 else if (s == "ulonglong" || s == "unsignedlonglong") |
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237 GET_SIZED_INT_TYPE (unsigned long long, u); |
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238 else if (s == "float") |
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239 { |
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240 if (sizeof (float) == sizeof (double)) |
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241 retval = dt_double; |
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242 else |
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243 retval = dt_single; |
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244 } |
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245 else if (s == "logical") |
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246 retval = dt_logical; |
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247 else |
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248 (*current_liboctave_error_handler) ("invalid data type specified"); |
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249 |
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250 if (retval == dt_unknown) |
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251 (*current_liboctave_error_handler) |
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252 ("unable to find matching native data type for %s", s.c_str ()); |
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253 |
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254 return retval; |
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255 } |
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256 |
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257 void |
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258 oct_data_conv::string_to_data_type |
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259 (const std::string& str, int& block_size, |
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260 oct_data_conv::data_type& input_type, |
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261 oct_data_conv::data_type& output_type) |
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262 { |
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263 block_size = 1; |
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264 input_type = dt_uchar; |
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265 output_type = dt_double; |
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266 |
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267 bool input_is_output = false; |
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268 |
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269 std::string s = strip_spaces (str); |
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270 |
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271 size_t pos = 0; |
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272 |
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273 if (s[0] == '*') |
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274 input_is_output = true; |
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275 else |
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276 { |
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277 size_t len = s.length (); |
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278 |
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279 while (pos < len && isdigit (s[pos])) |
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280 pos++; |
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281 |
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282 if (pos > 0) |
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283 { |
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284 if (s[pos] == '*') |
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285 { |
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286 block_size = atoi (s.c_str ()); |
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287 s = s.substr (pos+1); |
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288 } |
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289 else |
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290 { |
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291 (*current_liboctave_error_handler) |
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292 ("invalid repeat count in `%s'", str.c_str ()); |
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293 |
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294 return; |
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295 } |
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296 } |
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297 } |
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298 |
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299 pos = s.find ('='); |
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300 |
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301 if (pos != std::string::npos) |
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302 { |
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303 if (s[pos+1] == '>') |
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304 { |
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5870
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305 std::string s1; |
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306 |
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4944
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307 if (input_is_output) |
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308 { |
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309 input_is_output = false; |
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310 |
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5870
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311 s1 = s.substr (1, pos-1); |
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312 |
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313 (*current_liboctave_warning_handler) |
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314 ("warning: ignoring leading * in fread precision"); |
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315 } |
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5870
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316 else |
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317 s1 = s.substr (0, pos); |
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318 |
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5870
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319 input_type = string_to_data_type (s1); |
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320 output_type = string_to_data_type (s.substr (pos+2)); |
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321 } |
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322 else |
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323 (*current_liboctave_error_handler) |
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324 ("fread: invalid precision specified"); |
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325 } |
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326 else |
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327 { |
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5870
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328 if (input_is_output) |
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329 s = s.substr (1); |
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330 |
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4944
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331 input_type = string_to_data_type (s); |
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332 |
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333 if (input_is_output) |
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334 output_type = input_type; |
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335 } |
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336 } |
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337 |
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338 void |
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339 oct_data_conv::string_to_data_type |
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340 (const std::string& str, int& block_size, |
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341 oct_data_conv::data_type& output_type) |
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342 { |
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343 block_size = 1; |
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344 output_type = dt_double; |
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345 |
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346 std::string s = strip_spaces (str); |
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347 |
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348 size_t pos = 0; |
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349 |
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350 size_t len = s.length (); |
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351 |
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352 while (pos < len && isdigit (s[pos])) |
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353 pos++; |
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354 |
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355 if (pos > 0) |
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356 { |
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357 if (s[pos] == '*') |
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358 { |
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359 block_size = atoi (s.c_str ()); |
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360 s = s.substr (pos+1); |
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361 } |
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362 else |
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363 { |
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364 (*current_liboctave_error_handler) |
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365 ("invalid repeat count in `%s'", str.c_str ()); |
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366 |
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367 return; |
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368 } |
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369 } |
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370 |
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371 output_type = string_to_data_type (s); |
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372 } |
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373 |
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374 std::string |
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375 oct_data_conv::data_type_as_string (oct_data_conv::data_type dt) |
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376 { |
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377 std::string retval; |
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378 |
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379 switch (dt) |
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380 { |
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381 case oct_data_conv::dt_int8: |
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382 retval = "int8"; |
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383 break; |
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384 |
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385 case oct_data_conv::dt_uint8: |
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386 retval = "uint8"; |
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387 break; |
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388 |
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389 case oct_data_conv::dt_int16: |
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390 retval = "int16"; |
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391 break; |
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392 |
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393 case oct_data_conv::dt_uint16: |
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394 retval = "uint16"; |
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395 break; |
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396 |
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397 case oct_data_conv::dt_int32: |
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398 retval = "int32"; |
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399 break; |
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400 |
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401 case oct_data_conv::dt_uint32: |
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402 retval = "uint32"; |
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403 break; |
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404 |
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405 case oct_data_conv::dt_int64: |
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406 retval = "int64"; |
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407 break; |
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408 |
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409 case oct_data_conv::dt_uint64: |
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410 retval = "uint64"; |
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411 break; |
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412 |
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413 case oct_data_conv::dt_single: |
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414 retval = "single"; |
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415 break; |
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416 |
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417 case oct_data_conv::dt_double: |
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418 retval = "double"; |
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419 break; |
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420 |
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421 case oct_data_conv::dt_char: |
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422 retval = "char"; |
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423 break; |
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424 |
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425 case oct_data_conv::dt_schar: |
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426 retval = "signed char"; |
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427 break; |
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428 |
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429 case oct_data_conv::dt_uchar: |
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430 retval = "usigned char"; |
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431 break; |
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432 |
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433 case oct_data_conv::dt_short: |
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434 retval = "short"; |
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435 break; |
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436 |
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437 case oct_data_conv::dt_ushort: |
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438 retval = "unsigned short"; |
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439 break; |
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440 |
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441 case oct_data_conv::dt_int: |
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442 retval = "int"; |
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443 break; |
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444 |
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445 case oct_data_conv::dt_uint: |
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446 retval = "usigned int"; |
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447 break; |
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448 |
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449 case oct_data_conv::dt_long: |
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450 retval = "long"; |
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451 break; |
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452 |
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453 case oct_data_conv::dt_ulong: |
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454 retval = "usigned long"; |
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455 break; |
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456 |
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457 case oct_data_conv::dt_longlong: |
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458 retval = "long long"; |
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459 break; |
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460 |
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461 case oct_data_conv::dt_ulonglong: |
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462 retval = "unsigned long long"; |
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463 break; |
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464 |
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465 case oct_data_conv::dt_float: |
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466 retval = "float"; |
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467 break; |
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468 |
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4970
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469 case oct_data_conv::dt_logical: |
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470 retval = "logical"; |
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471 break; |
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472 |
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4944
|
473 case oct_data_conv::dt_unknown: |
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474 default: |
|
|
475 retval = "unknown"; |
|
|
476 break; |
|
|
477 } |
|
|
478 |
|
|
479 return retval; |
|
|
480 } |
|
1960
|
481 |
|
3359
|
482 #define LS_DO_READ(TYPE, swap, data, size, len, stream) \ |
|
1960
|
483 do \ |
|
|
484 { \ |
|
3867
|
485 if (len > 0) \ |
|
|
486 { \ |
|
5760
|
487 OCTAVE_LOCAL_BUFFER (TYPE, ptr, len); \ |
|
|
488 stream.read (reinterpret_cast<char *> (ptr), size * len); \ |
|
3867
|
489 if (swap) \ |
|
4944
|
490 swap_bytes< size > (ptr, len); \ |
|
5760
|
491 for (int i = 0; i < len; i++) \ |
|
3867
|
492 data[i] = ptr[i]; \ |
|
|
493 } \ |
|
1960
|
494 } \ |
|
|
495 while (0) |
|
|
496 |
|
|
497 // Have to use copy here to avoid writing over data accessed via |
|
|
498 // Matrix::data(). |
|
|
499 |
|
3359
|
500 #define LS_DO_WRITE(TYPE, data, size, len, stream) \ |
|
1960
|
501 do \ |
|
|
502 { \ |
|
3867
|
503 if (len > 0) \ |
|
|
504 { \ |
|
5760
|
505 char tmp_type = type; \ |
|
3867
|
506 stream.write (&tmp_type, 1); \ |
|
5760
|
507 OCTAVE_LOCAL_BUFFER (TYPE, ptr, len); \ |
|
3867
|
508 for (int i = 0; i < len; i++) \ |
|
5760
|
509 ptr[i] = static_cast <TYPE> (data[i]); \ |
|
|
510 stream.write (reinterpret_cast<char *> (ptr), size * len); \ |
|
3867
|
511 } \ |
|
1960
|
512 } \ |
|
|
513 while (0) |
|
|
514 |
|
|
515 // Loading variables from files. |
|
|
516 |
|
|
517 static void |
|
|
518 gripe_unrecognized_float_fmt (void) |
|
|
519 { |
|
|
520 (*current_liboctave_error_handler) |
|
|
521 ("unrecognized floating point format requested"); |
|
|
522 } |
|
|
523 |
|
|
524 static void |
|
|
525 gripe_data_conversion (const char *from, const char *to) |
|
|
526 { |
|
|
527 (*current_liboctave_error_handler) |
|
|
528 ("unable to convert from %s to %s format", from, to); |
|
|
529 } |
|
|
530 |
|
|
531 // But first, some data conversion routines. |
|
|
532 |
|
|
533 // Currently, we only handle conversions for the IEEE types. To fix |
|
|
534 // that, make more of the following routines work. |
|
|
535 |
|
5775
|
536 // FIXME -- assumes sizeof (Complex) == 8 |
|
|
537 // FIXME -- assumes sizeof (double) == 8 |
|
|
538 // FIXME -- assumes sizeof (float) == 4 |
|
1960
|
539 |
|
|
540 static void |
|
4944
|
541 IEEE_big_double_to_IEEE_little_double (void *d, int len) |
|
1960
|
542 { |
|
4944
|
543 swap_bytes<8> (d, len); |
|
1960
|
544 } |
|
|
545 |
|
|
546 static void |
|
4944
|
547 VAX_D_double_to_IEEE_little_double (void * /* d */, int /* len */) |
|
1960
|
548 { |
|
|
549 gripe_data_conversion ("VAX D float", "IEEE little endian format"); |
|
|
550 } |
|
|
551 |
|
|
552 static void |
|
4944
|
553 VAX_G_double_to_IEEE_little_double (void * /* d */, int /* len */) |
|
1960
|
554 { |
|
|
555 gripe_data_conversion ("VAX G float", "IEEE little endian format"); |
|
|
556 } |
|
|
557 |
|
|
558 static void |
|
4944
|
559 Cray_to_IEEE_little_double (void * /* d */, int /* len */) |
|
1960
|
560 { |
|
|
561 gripe_data_conversion ("Cray", "IEEE little endian format"); |
|
|
562 } |
|
|
563 |
|
|
564 static void |
|
4944
|
565 IEEE_big_float_to_IEEE_little_float (void *d, int len) |
|
1960
|
566 { |
|
4944
|
567 swap_bytes<4> (d, len); |
|
1960
|
568 } |
|
|
569 |
|
|
570 static void |
|
4944
|
571 VAX_D_float_to_IEEE_little_float (void * /* d */, int /* len */) |
|
1960
|
572 { |
|
|
573 gripe_data_conversion ("VAX D float", "IEEE little endian format"); |
|
|
574 } |
|
|
575 |
|
|
576 static void |
|
4944
|
577 VAX_G_float_to_IEEE_little_float (void * /* d */, int /* len */) |
|
1960
|
578 { |
|
|
579 gripe_data_conversion ("VAX G float", "IEEE little endian format"); |
|
|
580 } |
|
|
581 |
|
|
582 static void |
|
4944
|
583 Cray_to_IEEE_little_float (void * /* d */, int /* len */) |
|
1960
|
584 { |
|
|
585 gripe_data_conversion ("Cray", "IEEE little endian format"); |
|
|
586 } |
|
|
587 |
|
|
588 static void |
|
4944
|
589 IEEE_little_double_to_IEEE_big_double (void *d, int len) |
|
1960
|
590 { |
|
4944
|
591 swap_bytes<8> (d, len); |
|
1960
|
592 } |
|
|
593 |
|
|
594 static void |
|
4944
|
595 VAX_D_double_to_IEEE_big_double (void * /* d */, int /* len */) |
|
1960
|
596 { |
|
|
597 gripe_data_conversion ("VAX D float", "IEEE big endian format"); |
|
|
598 } |
|
|
599 |
|
|
600 static void |
|
4944
|
601 VAX_G_double_to_IEEE_big_double (void * /* d */, int /* len */) |
|
1960
|
602 { |
|
|
603 gripe_data_conversion ("VAX G float", "IEEE big endian format"); |
|
|
604 } |
|
|
605 |
|
|
606 static void |
|
4944
|
607 Cray_to_IEEE_big_double (void * /* d */, int /* len */) |
|
1960
|
608 { |
|
|
609 gripe_data_conversion ("Cray", "IEEE big endian format"); |
|
|
610 } |
|
|
611 |
|
|
612 static void |
|
4944
|
613 IEEE_little_float_to_IEEE_big_float (void *d, int len) |
|
1960
|
614 { |
|
4944
|
615 swap_bytes<4> (d, len); |
|
1960
|
616 } |
|
|
617 |
|
|
618 static void |
|
4944
|
619 VAX_D_float_to_IEEE_big_float (void * /* d */, int /* len */) |
|
1960
|
620 { |
|
|
621 gripe_data_conversion ("VAX D float", "IEEE big endian format"); |
|
|
622 } |
|
|
623 |
|
|
624 static void |
|
4944
|
625 VAX_G_float_to_IEEE_big_float (void * /* d */, int /* len */) |
|
1960
|
626 { |
|
|
627 gripe_data_conversion ("VAX G float", "IEEE big endian format"); |
|
|
628 } |
|
|
629 |
|
|
630 static void |
|
4944
|
631 Cray_to_IEEE_big_float (void * /* d */, int /* len */) |
|
1960
|
632 { |
|
|
633 gripe_data_conversion ("Cray", "IEEE big endian format"); |
|
|
634 } |
|
|
635 |
|
|
636 static void |
|
4944
|
637 IEEE_little_double_to_VAX_D_double (void * /* d */, int /* len */) |
|
1960
|
638 { |
|
|
639 gripe_data_conversion ("IEEE little endian", "VAX D"); |
|
|
640 } |
|
|
641 |
|
|
642 static void |
|
4944
|
643 IEEE_big_double_to_VAX_D_double (void * /* d */, int /* len */) |
|
1960
|
644 { |
|
|
645 gripe_data_conversion ("IEEE big endian", "VAX D"); |
|
|
646 } |
|
|
647 |
|
|
648 static void |
|
4944
|
649 VAX_G_double_to_VAX_D_double (void * /* d */, int /* len */) |
|
1960
|
650 { |
|
|
651 gripe_data_conversion ("VAX G float", "VAX D"); |
|
|
652 } |
|
|
653 |
|
|
654 static void |
|
4944
|
655 Cray_to_VAX_D_double (void * /* d */, int /* len */) |
|
1960
|
656 { |
|
|
657 gripe_data_conversion ("Cray", "VAX D"); |
|
|
658 } |
|
|
659 |
|
|
660 static void |
|
4944
|
661 IEEE_little_float_to_VAX_D_float (void * /* d */, int /* len */) |
|
1960
|
662 { |
|
|
663 gripe_data_conversion ("IEEE little endian", "VAX D"); |
|
|
664 } |
|
|
665 |
|
|
666 static void |
|
4944
|
667 IEEE_big_float_to_VAX_D_float (void * /* d */, int /* len */) |
|
1960
|
668 { |
|
|
669 gripe_data_conversion ("IEEE big endian", "VAX D"); |
|
|
670 } |
|
|
671 |
|
|
672 static void |
|
4944
|
673 VAX_G_float_to_VAX_D_float (void * /* d */, int /* len */) |
|
1960
|
674 { |
|
|
675 gripe_data_conversion ("VAX G float", "VAX D"); |
|
|
676 } |
|
|
677 |
|
|
678 static void |
|
4944
|
679 Cray_to_VAX_D_float (void * /* d */, int /* len */) |
|
1960
|
680 { |
|
|
681 gripe_data_conversion ("Cray", "VAX D"); |
|
|
682 } |
|
|
683 |
|
|
684 static void |
|
4944
|
685 IEEE_little_double_to_VAX_G_double (void * /* d */, int /* len */) |
|
1960
|
686 { |
|
|
687 gripe_data_conversion ("IEEE little endian", "VAX G"); |
|
|
688 } |
|
|
689 |
|
|
690 static void |
|
4944
|
691 IEEE_big_double_to_VAX_G_double (void * /* d */, int /* len */) |
|
1960
|
692 { |
|
|
693 gripe_data_conversion ("IEEE big endian", "VAX G"); |
|
|
694 } |
|
|
695 |
|
|
696 static void |
|
4944
|
697 VAX_D_double_to_VAX_G_double (void * /* d */, int /* len */) |
|
1960
|
698 { |
|
|
699 gripe_data_conversion ("VAX D float", "VAX G"); |
|
|
700 } |
|
|
701 |
|
|
702 static void |
|
4944
|
703 Cray_to_VAX_G_double (void * /* d */, int /* len */) |
|
1960
|
704 { |
|
|
705 gripe_data_conversion ("VAX G float", "VAX G"); |
|
|
706 } |
|
|
707 |
|
|
708 static void |
|
4944
|
709 IEEE_little_float_to_VAX_G_float (void * /* d */, int /* len */) |
|
1960
|
710 { |
|
|
711 gripe_data_conversion ("IEEE little endian", "VAX G"); |
|
|
712 } |
|
|
713 |
|
|
714 static void |
|
4944
|
715 IEEE_big_float_to_VAX_G_float (void * /* d */, int /* len */) |
|
1960
|
716 { |
|
|
717 gripe_data_conversion ("IEEE big endian", "VAX G"); |
|
|
718 } |
|
|
719 |
|
|
720 static void |
|
4944
|
721 VAX_D_float_to_VAX_G_float (void * /* d */, int /* len */) |
|
1960
|
722 { |
|
|
723 gripe_data_conversion ("VAX D float", "VAX G"); |
|
|
724 } |
|
|
725 |
|
|
726 static void |
|
4944
|
727 Cray_to_VAX_G_float (void * /* d */, int /* len */) |
|
1960
|
728 { |
|
|
729 gripe_data_conversion ("VAX G float", "VAX G"); |
|
|
730 } |
|
|
731 |
|
|
732 void |
|
4944
|
733 do_double_format_conversion (void *data, int len, |
|
|
734 oct_mach_info::float_format from_fmt, |
|
|
735 oct_mach_info::float_format to_fmt) |
|
1960
|
736 { |
|
4944
|
737 switch (to_fmt) |
|
1960
|
738 { |
|
4574
|
739 case oct_mach_info::flt_fmt_ieee_little_endian: |
|
4944
|
740 switch (from_fmt) |
|
1960
|
741 { |
|
4574
|
742 case oct_mach_info::flt_fmt_ieee_little_endian: |
|
1960
|
743 break; |
|
|
744 |
|
4574
|
745 case oct_mach_info::flt_fmt_ieee_big_endian: |
|
1960
|
746 IEEE_big_double_to_IEEE_little_double (data, len); |
|
|
747 break; |
|
|
748 |
|
4574
|
749 case oct_mach_info::flt_fmt_vax_d: |
|
1960
|
750 VAX_D_double_to_IEEE_little_double (data, len); |
|
|
751 break; |
|
|
752 |
|
4574
|
753 case oct_mach_info::flt_fmt_vax_g: |
|
1960
|
754 VAX_G_double_to_IEEE_little_double (data, len); |
|
|
755 break; |
|
|
756 |
|
4574
|
757 case oct_mach_info::flt_fmt_cray: |
|
1960
|
758 Cray_to_IEEE_little_double (data, len); |
|
|
759 break; |
|
|
760 |
|
|
761 default: |
|
|
762 gripe_unrecognized_float_fmt (); |
|
|
763 break; |
|
|
764 } |
|
|
765 break; |
|
|
766 |
|
4574
|
767 case oct_mach_info::flt_fmt_ieee_big_endian: |
|
4944
|
768 switch (from_fmt) |
|
1960
|
769 { |
|
4574
|
770 case oct_mach_info::flt_fmt_ieee_little_endian: |
|
1960
|
771 IEEE_little_double_to_IEEE_big_double (data, len); |
|
|
772 break; |
|
|
773 |
|
4574
|
774 case oct_mach_info::flt_fmt_ieee_big_endian: |
|
1960
|
775 break; |
|
|
776 |
|
4574
|
777 case oct_mach_info::flt_fmt_vax_d: |
|
1960
|
778 VAX_D_double_to_IEEE_big_double (data, len); |
|
|
779 break; |
|
|
780 |
|
4574
|
781 case oct_mach_info::flt_fmt_vax_g: |
|
1960
|
782 VAX_G_double_to_IEEE_big_double (data, len); |
|
|
783 break; |
|
|
784 |
|
4574
|
785 case oct_mach_info::flt_fmt_cray: |
|
1960
|
786 Cray_to_IEEE_big_double (data, len); |
|
|
787 break; |
|
|
788 |
|
|
789 default: |
|
|
790 gripe_unrecognized_float_fmt (); |
|
|
791 break; |
|
|
792 } |
|
|
793 break; |
|
|
794 |
|
4574
|
795 case oct_mach_info::flt_fmt_vax_d: |
|
4944
|
796 switch (from_fmt) |
|
1960
|
797 { |
|
4574
|
798 case oct_mach_info::flt_fmt_ieee_little_endian: |
|
1960
|
799 IEEE_little_double_to_VAX_D_double (data, len); |
|
|
800 break; |
|
|
801 |
|
4574
|
802 case oct_mach_info::flt_fmt_ieee_big_endian: |
|
1960
|
803 IEEE_big_double_to_VAX_D_double (data, len); |
|
|
804 break; |
|
|
805 |
|
4574
|
806 case oct_mach_info::flt_fmt_vax_d: |
|
1960
|
807 break; |
|
|
808 |
|
4574
|
809 case oct_mach_info::flt_fmt_vax_g: |
|
1960
|
810 VAX_G_double_to_VAX_D_double (data, len); |
|
|
811 break; |
|
|
812 |
|
4574
|
813 case oct_mach_info::flt_fmt_cray: |
|
1960
|
814 Cray_to_VAX_D_double (data, len); |
|
|
815 break; |
|
|
816 |
|
|
817 default: |
|
|
818 gripe_unrecognized_float_fmt (); |
|
|
819 break; |
|
|
820 } |
|
|
821 break; |
|
|
822 |
|
4574
|
823 case oct_mach_info::flt_fmt_vax_g: |
|
4944
|
824 switch (from_fmt) |
|
1960
|
825 { |
|
4574
|
826 case oct_mach_info::flt_fmt_ieee_little_endian: |
|
1960
|
827 IEEE_little_double_to_VAX_G_double (data, len); |
|
|
828 break; |
|
|
829 |
|
4574
|
830 case oct_mach_info::flt_fmt_ieee_big_endian: |
|
1960
|
831 IEEE_big_double_to_VAX_G_double (data, len); |
|
|
832 break; |
|
|
833 |
|
4574
|
834 case oct_mach_info::flt_fmt_vax_d: |
|
1960
|
835 VAX_D_double_to_VAX_G_double (data, len); |
|
|
836 break; |
|
|
837 |
|
4574
|
838 case oct_mach_info::flt_fmt_vax_g: |
|
1960
|
839 break; |
|
|
840 |
|
4574
|
841 case oct_mach_info::flt_fmt_cray: |
|
1960
|
842 Cray_to_VAX_G_double (data, len); |
|
|
843 break; |
|
|
844 |
|
|
845 default: |
|
|
846 gripe_unrecognized_float_fmt (); |
|
|
847 break; |
|
|
848 } |
|
|
849 break; |
|
|
850 |
|
|
851 default: |
|
|
852 (*current_liboctave_error_handler) |
|
|
853 ("impossible state reached in file `%s' at line %d", |
|
|
854 __FILE__, __LINE__); |
|
|
855 break; |
|
|
856 } |
|
|
857 } |
|
|
858 |
|
|
859 void |
|
4944
|
860 do_float_format_conversion (void *data, int len, |
|
|
861 oct_mach_info::float_format from_fmt, |
|
|
862 oct_mach_info::float_format to_fmt) |
|
1960
|
863 { |
|
4944
|
864 switch (to_fmt) |
|
1960
|
865 { |
|
4574
|
866 case oct_mach_info::flt_fmt_ieee_little_endian: |
|
4944
|
867 switch (from_fmt) |
|
1960
|
868 { |
|
4574
|
869 case oct_mach_info::flt_fmt_ieee_little_endian: |
|
1960
|
870 break; |
|
|
871 |
|
4574
|
872 case oct_mach_info::flt_fmt_ieee_big_endian: |
|
1960
|
873 IEEE_big_float_to_IEEE_little_float (data, len); |
|
|
874 break; |
|
|
875 |
|
4574
|
876 case oct_mach_info::flt_fmt_vax_d: |
|
1960
|
877 VAX_D_float_to_IEEE_little_float (data, len); |
|
|
878 break; |
|
|
879 |
|
4574
|
880 case oct_mach_info::flt_fmt_vax_g: |
|
1960
|
881 VAX_G_float_to_IEEE_little_float (data, len); |
|
|
882 break; |
|
|
883 |
|
4574
|
884 case oct_mach_info::flt_fmt_cray: |
|
1960
|
885 Cray_to_IEEE_little_float (data, len); |
|
|
886 break; |
|
|
887 |
|
|
888 default: |
|
|
889 gripe_unrecognized_float_fmt (); |
|
|
890 break; |
|
|
891 } |
|
|
892 break; |
|
|
893 |
|
4574
|
894 case oct_mach_info::flt_fmt_ieee_big_endian: |
|
4944
|
895 switch (from_fmt) |
|
1960
|
896 { |
|
4574
|
897 case oct_mach_info::flt_fmt_ieee_little_endian: |
|
1960
|
898 IEEE_little_float_to_IEEE_big_float (data, len); |
|
|
899 break; |
|
|
900 |
|
4574
|
901 case oct_mach_info::flt_fmt_ieee_big_endian: |
|
1960
|
902 break; |
|
|
903 |
|
4574
|
904 case oct_mach_info::flt_fmt_vax_d: |
|
1960
|
905 VAX_D_float_to_IEEE_big_float (data, len); |
|
|
906 break; |
|
|
907 |
|
4574
|
908 case oct_mach_info::flt_fmt_vax_g: |
|
1960
|
909 VAX_G_float_to_IEEE_big_float (data, len); |
|
|
910 break; |
|
|
911 |
|
4574
|
912 case oct_mach_info::flt_fmt_cray: |
|
1960
|
913 Cray_to_IEEE_big_float (data, len); |
|
|
914 break; |
|
|
915 |
|
|
916 default: |
|
|
917 gripe_unrecognized_float_fmt (); |
|
|
918 break; |
|
|
919 } |
|
|
920 break; |
|
|
921 |
|
4574
|
922 case oct_mach_info::flt_fmt_vax_d: |
|
4944
|
923 switch (from_fmt) |
|
1960
|
924 { |
|
4574
|
925 case oct_mach_info::flt_fmt_ieee_little_endian: |
|
1960
|
926 IEEE_little_float_to_VAX_D_float (data, len); |
|
|
927 break; |
|
|
928 |
|
4574
|
929 case oct_mach_info::flt_fmt_ieee_big_endian: |
|
1960
|
930 IEEE_big_float_to_VAX_D_float (data, len); |
|
|
931 break; |
|
|
932 |
|
4574
|
933 case oct_mach_info::flt_fmt_vax_d: |
|
1960
|
934 break; |
|
|
935 |
|
4574
|
936 case oct_mach_info::flt_fmt_vax_g: |
|
1960
|
937 VAX_G_float_to_VAX_D_float (data, len); |
|
|
938 break; |
|
|
939 |
|
4574
|
940 case oct_mach_info::flt_fmt_cray: |
|
1960
|
941 Cray_to_VAX_D_float (data, len); |
|
|
942 break; |
|
|
943 |
|
|
944 default: |
|
|
945 gripe_unrecognized_float_fmt (); |
|
|
946 break; |
|
|
947 } |
|
|
948 break; |
|
|
949 |
|
4574
|
950 case oct_mach_info::flt_fmt_vax_g: |
|
4944
|
951 switch (from_fmt) |
|
1960
|
952 { |
|
4574
|
953 case oct_mach_info::flt_fmt_ieee_little_endian: |
|
1960
|
954 IEEE_little_float_to_VAX_G_float (data, len); |
|
|
955 break; |
|
|
956 |
|
4574
|
957 case oct_mach_info::flt_fmt_ieee_big_endian: |
|
1960
|
958 IEEE_big_float_to_VAX_G_float (data, len); |
|
|
959 break; |
|
|
960 |
|
4574
|
961 case oct_mach_info::flt_fmt_vax_d: |
|
1960
|
962 VAX_D_float_to_VAX_G_float (data, len); |
|
|
963 break; |
|
|
964 |
|
4574
|
965 case oct_mach_info::flt_fmt_vax_g: |
|
1960
|
966 break; |
|
|
967 |
|
4574
|
968 case oct_mach_info::flt_fmt_cray: |
|
1960
|
969 Cray_to_VAX_G_float (data, len); |
|
|
970 break; |
|
|
971 |
|
|
972 default: |
|
|
973 gripe_unrecognized_float_fmt (); |
|
|
974 break; |
|
|
975 } |
|
|
976 break; |
|
|
977 |
|
|
978 default: |
|
|
979 (*current_liboctave_error_handler) |
|
|
980 ("impossible state reached in file `%s' at line %d", |
|
|
981 __FILE__, __LINE__); |
|
|
982 break; |
|
|
983 } |
|
|
984 } |
|
|
985 |
|
|
986 void |
|
4944
|
987 do_float_format_conversion (void *data, size_t sz, int len, |
|
|
988 oct_mach_info::float_format from_fmt, |
|
|
989 oct_mach_info::float_format to_fmt) |
|
|
990 { |
|
|
991 switch (sz) |
|
|
992 { |
|
|
993 case sizeof (float): |
|
|
994 do_float_format_conversion (data, len, from_fmt, to_fmt); |
|
|
995 break; |
|
|
996 |
|
|
997 case sizeof (double): |
|
|
998 do_double_format_conversion (data, len, from_fmt, to_fmt); |
|
|
999 break; |
|
|
1000 |
|
|
1001 default: |
|
|
1002 (*current_liboctave_error_handler) |
|
|
1003 ("impossible state reached in file `%s' at line %d", |
|
|
1004 __FILE__, __LINE__); |
|
|
1005 break; |
|
|
1006 } |
|
|
1007 } |
|
|
1008 |
|
|
1009 |
|
|
1010 void |
|
3504
|
1011 read_doubles (std::istream& is, double *data, save_type type, int len, |
|
4944
|
1012 bool swap, oct_mach_info::float_format fmt) |
|
1960
|
1013 { |
|
|
1014 switch (type) |
|
|
1015 { |
|
|
1016 case LS_U_CHAR: |
|
5828
|
1017 LS_DO_READ (uint8_t, swap, data, 1, len, is); |
|
1960
|
1018 break; |
|
|
1019 |
|
|
1020 case LS_U_SHORT: |
|
5828
|
1021 LS_DO_READ (uint16_t, swap, data, 2, len, is); |
|
1960
|
1022 break; |
|
|
1023 |
|
|
1024 case LS_U_INT: |
|
5828
|
1025 LS_DO_READ (uint32_t, swap, data, 4, len, is); |
|
1960
|
1026 break; |
|
|
1027 |
|
|
1028 case LS_CHAR: |
|
5828
|
1029 LS_DO_READ (int8_t, swap, data, 1, len, is); |
|
1960
|
1030 break; |
|
|
1031 |
|
|
1032 case LS_SHORT: |
|
5828
|
1033 LS_DO_READ (int16_t, swap, data, 2, len, is); |
|
1960
|
1034 break; |
|
|
1035 |
|
|
1036 case LS_INT: |
|
5828
|
1037 LS_DO_READ (int32_t, swap, data, 4, len, is); |
|
1960
|
1038 break; |
|
|
1039 |
|
|
1040 case LS_FLOAT: |
|
|
1041 { |
|
5760
|
1042 OCTAVE_LOCAL_BUFFER (float, ptr, len); |
|
|
1043 is.read (reinterpret_cast<char *> (ptr), 4 * len); |
|
|
1044 do_float_format_conversion (ptr, len, fmt); |
|
|
1045 for (int i = 0; i < len; i++) |
|
1960
|
1046 data[i] = ptr[i]; |
|
|
1047 } |
|
|
1048 break; |
|
|
1049 |
|
3359
|
1050 case LS_DOUBLE: // No conversion necessary. |
|
5760
|
1051 is.read (reinterpret_cast<char *> (data), 8 * len); |
|
1960
|
1052 do_double_format_conversion (data, len, fmt); |
|
|
1053 break; |
|
|
1054 |
|
|
1055 default: |
|
3504
|
1056 is.clear (std::ios::failbit|is.rdstate ()); |
|
1960
|
1057 break; |
|
|
1058 } |
|
|
1059 } |
|
|
1060 |
|
|
1061 void |
|
3504
|
1062 write_doubles (std::ostream& os, const double *data, save_type type, int len) |
|
1960
|
1063 { |
|
|
1064 switch (type) |
|
|
1065 { |
|
|
1066 case LS_U_CHAR: |
|
5828
|
1067 LS_DO_WRITE (uint8_t, data, 1, len, os); |
|
1960
|
1068 break; |
|
|
1069 |
|
|
1070 case LS_U_SHORT: |
|
5828
|
1071 LS_DO_WRITE (uint16_t, data, 2, len, os); |
|
1960
|
1072 break; |
|
|
1073 |
|
|
1074 case LS_U_INT: |
|
5828
|
1075 LS_DO_WRITE (uint32_t, data, 4, len, os); |
|
1960
|
1076 break; |
|
|
1077 |
|
|
1078 case LS_CHAR: |
|
5828
|
1079 LS_DO_WRITE (int8_t, data, 1, len, os); |
|
1960
|
1080 break; |
|
|
1081 |
|
|
1082 case LS_SHORT: |
|
5828
|
1083 LS_DO_WRITE (int16_t, data, 2, len, os); |
|
1960
|
1084 break; |
|
|
1085 |
|
|
1086 case LS_INT: |
|
5828
|
1087 LS_DO_WRITE (int32_t, data, 4, len, os); |
|
1960
|
1088 break; |
|
|
1089 |
|
|
1090 case LS_FLOAT: |
|
|
1091 LS_DO_WRITE (float, data, 4, len, os); |
|
|
1092 break; |
|
|
1093 |
|
3359
|
1094 case LS_DOUBLE: // No conversion necessary. |
|
1960
|
1095 { |
|
5760
|
1096 char tmp_type = static_cast<char> (type); |
|
1960
|
1097 os.write (&tmp_type, 1); |
|
5760
|
1098 os.write (reinterpret_cast <const char *> (data), 8 * len); |
|
1960
|
1099 } |
|
|
1100 break; |
|
|
1101 |
|
|
1102 default: |
|
|
1103 (*current_liboctave_error_handler) |
|
|
1104 ("unrecognized data format requested"); |
|
|
1105 break; |
|
|
1106 } |
|
|
1107 } |
|
|
1108 |
|
|
1109 /* |
|
|
1110 ;;; Local Variables: *** |
|
|
1111 ;;; mode: C++ *** |
|
|
1112 ;;; End: *** |
|
|
1113 */ |
