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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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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 2, or (at your option) any |
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10 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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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 <cctype> |
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28 |
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29 #include <iostream.h> |
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30 |
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31 #include "byte-swap.h" |
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32 #include "data-conv.h" |
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33 #include "lo-error.h" |
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34 |
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35 #define FIND_SIZED_INT_TYPE(VAL, BITS, TQ, Q) \ |
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36 do \ |
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37 { \ |
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38 int sz = BITS / CHAR_BIT; \ |
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39 if (sizeof (TQ char) == sz) \ |
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40 VAL = oct_data_conv::dt_ ## Q ## char; \ |
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41 else if (sizeof (TQ short) == sz) \ |
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42 VAL = oct_data_conv::dt_ ## Q ## short; \ |
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43 else if (sizeof (TQ int) == sz) \ |
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44 VAL = oct_data_conv::dt_ ## Q ## int; \ |
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45 else if (sizeof (TQ long) == sz) \ |
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46 VAL = oct_data_conv::dt_ ## Q ## long; \ |
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47 else \ |
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48 VAL = oct_data_conv::dt_unknown; \ |
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49 } \ |
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50 while (0) |
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51 |
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52 #define FIND_SIZED_FLOAT_TYPE(VAL, BITS) \ |
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53 do \ |
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54 { \ |
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55 int sz = BITS / CHAR_BIT; \ |
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56 if (sizeof (float) == sz) \ |
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57 VAL = oct_data_conv::dt_float; \ |
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58 else if (sizeof (double) == sz) \ |
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59 VAL = oct_data_conv::dt_double; \ |
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60 else \ |
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61 VAL = oct_data_conv::dt_unknown; \ |
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62 } \ |
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63 while (0) |
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64 |
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65 // I'm not sure it is worth the trouble, but let's use a lookup table |
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66 // for the types that are supposed to be a specific number of bits |
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67 // wide. Given the macros above, this should work as long as CHAR_BIT |
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68 // is a multiple of 8 and there are types with the right sizes. |
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69 // |
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70 // The sized data type lookup table has the following format: |
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71 // |
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72 // bits |
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73 // +----+----+----+----+ |
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74 // | 8 | 16 | 32 | 64 | |
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75 // +----+----+----+----+ |
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76 // signed integer | | | | | |
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77 // +----+----+----+----+ |
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78 // unsigned integer | | | | | |
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79 // +----+----+----+----+ |
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80 // floating point | | | | | |
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81 // +----+----+----+----+ |
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82 // |
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83 // So, the 0,3 element is supposed to contain the oct_data_conv enum |
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84 // value corresponding to the correct native data type for a signed |
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85 // 32-bit integer. |
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86 |
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87 static void |
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88 init_sized_type_lookup_table (oct_data_conv::data_type table[3][4]) |
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89 { |
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90 int bits = 8; |
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91 |
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92 for (int i = 0; i < 4; i++) |
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93 { |
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94 FIND_SIZED_INT_TYPE (table[0][i], bits, , ); |
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95 |
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96 FIND_SIZED_INT_TYPE (table[1][i], bits, unsigned, u); |
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97 |
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98 FIND_SIZED_FLOAT_TYPE (table[2][i], bits); |
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99 |
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100 bits *= 2; |
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101 } |
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102 } |
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103 |
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104 oct_data_conv::data_type |
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105 oct_data_conv::string_to_data_type (const string& str) |
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106 { |
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107 data_type retval = dt_unknown; |
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108 |
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109 static bool initialized = false; |
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110 |
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111 static data_type sized_type_table[3][4]; |
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112 |
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113 if (! initialized) |
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114 { |
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115 init_sized_type_lookup_table (sized_type_table); |
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116 |
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117 initialized = true; |
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118 } |
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119 |
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120 // XXX FIXME XXX -- finish implementing this. |
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121 |
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122 int n = str.length (); |
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123 |
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124 int k = 0; |
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125 |
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126 string s (n, ' '); |
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127 |
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128 for (int i = 0; i < n; i++) |
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129 if (! isspace (str[i])) |
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130 s[k++] = tolower (str[i]); |
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131 |
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132 s.resize (k); |
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133 |
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134 if (s == "char") |
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135 retval = dt_char; |
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136 else if (s == "schar" || s == "signedchar") |
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137 retval = dt_schar; |
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138 else if (s == "uchar" || s == "unsignedchar") |
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139 retval = dt_uchar; |
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140 else if (s == "short") |
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141 retval = dt_short; |
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142 else if (s == "ushort" || s == "unsignedshort") |
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143 retval = dt_ushort; |
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144 else if (s == "int") |
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145 retval = dt_int; |
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146 else if (s == "uint" || s == "unsignedint") |
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147 retval = dt_uint; |
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148 else if (s == "long") |
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149 retval = dt_long; |
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150 else if (s == "ulong" || s == "unsignedlong") |
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151 retval = dt_ulong; |
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152 else if (s == "float") |
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153 retval = dt_float; |
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154 else if (s == "double") |
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155 retval = dt_double; |
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156 else if (s == "int8" || s == "char*1" || s == "integer*1") |
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157 retval = sized_type_table[0][0]; |
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158 else if (s == "int16" || s == "integer*2") |
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159 retval = sized_type_table[0][1]; |
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160 else if (s == "int32" || s == "integer*4") |
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161 retval = sized_type_table[0][2]; |
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162 else if (s == "int64" || s == "integer*8") |
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163 retval = sized_type_table[0][3]; |
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164 else if (s == "uint8") |
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165 retval = sized_type_table[1][0]; |
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166 else if (s == "uint16") |
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167 retval = sized_type_table[1][1]; |
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168 else if (s == "uint32") |
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169 retval = sized_type_table[1][2]; |
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170 else if (s == "uint64") |
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171 retval = sized_type_table[1][3]; |
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172 else if (s == "float32" || s == "real*4") |
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173 retval = sized_type_table[2][2]; |
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174 else if (s == "float64" || s == "real*8") |
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175 retval = sized_type_table[2][3]; |
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176 else |
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177 (*current_liboctave_error_handler) ("invalid data type specified"); |
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178 |
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179 if (retval == dt_unknown) |
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180 (*current_liboctave_error_handler) |
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181 ("unable to find matching native data type for %s", s.c_str ()); |
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182 |
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183 return retval; |
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184 } |
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185 |
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186 #define swap_1_bytes(x, y) |
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187 |
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188 #define LS_DO_READ(TYPE, swap, data, size, len, stream) \ |
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189 do \ |
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190 { \ |
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191 volatile TYPE *ptr = X_CAST (volatile TYPE *, data); \ |
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192 stream.read (X_CAST (TYPE *, ptr), size * len); \ |
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193 if (swap) \ |
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194 swap_ ## size ## _bytes (ptr, len); \ |
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195 TYPE tmp = ptr[0]; \ |
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196 for (int i = len - 1; i > 0; i--) \ |
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197 data[i] = ptr[i]; \ |
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198 data[0] = tmp; \ |
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199 } \ |
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200 while (0) |
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201 |
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202 // Have to use copy here to avoid writing over data accessed via |
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203 // Matrix::data(). |
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204 |
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205 #define LS_DO_WRITE(TYPE, data, size, len, stream) \ |
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206 do \ |
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207 { \ |
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208 char tmp_type = static_cast<char> (type); \ |
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209 stream.write (&tmp_type, 1); \ |
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210 TYPE *ptr = new TYPE [len]; \ |
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211 for (int i = 0; i < len; i++) \ |
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212 ptr[i] = X_CAST (TYPE, data[i]); \ |
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213 stream.write (ptr, size * len); \ |
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214 delete [] ptr ; \ |
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215 } \ |
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216 while (0) |
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217 |
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218 // Loading variables from files. |
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219 |
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220 static void |
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221 gripe_unrecognized_float_fmt (void) |
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222 { |
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223 (*current_liboctave_error_handler) |
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224 ("unrecognized floating point format requested"); |
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225 } |
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226 |
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227 static void |
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228 gripe_data_conversion (const char *from, const char *to) |
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229 { |
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230 (*current_liboctave_error_handler) |
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231 ("unable to convert from %s to %s format", from, to); |
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232 } |
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233 |
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234 // But first, some data conversion routines. |
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235 |
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236 // Currently, we only handle conversions for the IEEE types. To fix |
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237 // that, make more of the following routines work. |
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238 |
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239 // XXX FIXME XXX -- assumes sizeof (Complex) == 8 |
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240 // XXX FIXME XXX -- assumes sizeof (double) == 8 |
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241 // XXX FIXME XXX -- assumes sizeof (float) == 4 |
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242 |
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243 static void |
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244 IEEE_big_double_to_IEEE_little_double (double *d, int len) |
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245 { |
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246 swap_8_bytes (d, len); |
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247 } |
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248 |
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249 static void |
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250 VAX_D_double_to_IEEE_little_double (double * /* d */, int /* len */) |
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251 { |
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252 gripe_data_conversion ("VAX D float", "IEEE little endian format"); |
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253 } |
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254 |
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255 static void |
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256 VAX_G_double_to_IEEE_little_double (double * /* d */, int /* len */) |
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257 { |
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258 gripe_data_conversion ("VAX G float", "IEEE little endian format"); |
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259 } |
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260 |
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261 static void |
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262 Cray_to_IEEE_little_double (double * /* d */, int /* len */) |
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263 { |
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264 gripe_data_conversion ("Cray", "IEEE little endian format"); |
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265 } |
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266 |
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267 static void |
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268 IEEE_big_float_to_IEEE_little_float (float *d, int len) |
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269 { |
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270 swap_4_bytes (d, len); |
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271 } |
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272 |
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273 static void |
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274 VAX_D_float_to_IEEE_little_float (float * /* d */, int /* len */) |
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275 { |
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276 gripe_data_conversion ("VAX D float", "IEEE little endian format"); |
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277 } |
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278 |
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279 static void |
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280 VAX_G_float_to_IEEE_little_float (float * /* d */, int /* len */) |
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281 { |
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282 gripe_data_conversion ("VAX G float", "IEEE little endian format"); |
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283 } |
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284 |
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285 static void |
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286 Cray_to_IEEE_little_float (float * /* d */, int /* len */) |
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287 { |
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288 gripe_data_conversion ("Cray", "IEEE little endian format"); |
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289 } |
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290 |
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291 static void |
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292 IEEE_little_double_to_IEEE_big_double (double *d, int len) |
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293 { |
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294 swap_8_bytes (d, len); |
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295 } |
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296 |
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297 static void |
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298 VAX_D_double_to_IEEE_big_double (double * /* d */, int /* len */) |
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299 { |
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300 gripe_data_conversion ("VAX D float", "IEEE big endian format"); |
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301 } |
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302 |
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303 static void |
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304 VAX_G_double_to_IEEE_big_double (double * /* d */, int /* len */) |
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305 { |
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306 gripe_data_conversion ("VAX G float", "IEEE big endian format"); |
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307 } |
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308 |
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309 static void |
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310 Cray_to_IEEE_big_double (double * /* d */, int /* len */) |
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311 { |
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312 gripe_data_conversion ("Cray", "IEEE big endian format"); |
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313 } |
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314 |
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315 static void |
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316 IEEE_little_float_to_IEEE_big_float (float *d, int len) |
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317 { |
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318 swap_4_bytes (d, len); |
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319 } |
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320 |
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321 static void |
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322 VAX_D_float_to_IEEE_big_float (float * /* d */, int /* len */) |
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323 { |
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324 gripe_data_conversion ("VAX D float", "IEEE big endian format"); |
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325 } |
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326 |
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327 static void |
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328 VAX_G_float_to_IEEE_big_float (float * /* d */, int /* len */) |
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329 { |
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330 gripe_data_conversion ("VAX G float", "IEEE big endian format"); |
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331 } |
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332 |
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333 static void |
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334 Cray_to_IEEE_big_float (float * /* d */, int /* len */) |
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335 { |
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336 gripe_data_conversion ("Cray", "IEEE big endian format"); |
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337 } |
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338 |
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339 static void |
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340 IEEE_little_double_to_VAX_D_double (double * /* d */, int /* len */) |
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341 { |
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342 gripe_data_conversion ("IEEE little endian", "VAX D"); |
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343 } |
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344 |
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345 static void |
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346 IEEE_big_double_to_VAX_D_double (double * /* d */, int /* len */) |
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347 { |
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348 gripe_data_conversion ("IEEE big endian", "VAX D"); |
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349 } |
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350 |
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351 static void |
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352 VAX_G_double_to_VAX_D_double (double * /* d */, int /* len */) |
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353 { |
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354 gripe_data_conversion ("VAX G float", "VAX D"); |
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355 } |
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356 |
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357 static void |
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358 Cray_to_VAX_D_double (double * /* d */, int /* len */) |
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359 { |
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360 gripe_data_conversion ("Cray", "VAX D"); |
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361 } |
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362 |
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363 static void |
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364 IEEE_little_float_to_VAX_D_float (float * /* d */, int /* len */) |
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365 { |
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366 gripe_data_conversion ("IEEE little endian", "VAX D"); |
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367 } |
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368 |
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369 static void |
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370 IEEE_big_float_to_VAX_D_float (float * /* d */, int /* len */) |
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371 { |
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372 gripe_data_conversion ("IEEE big endian", "VAX D"); |
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373 } |
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374 |
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375 static void |
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376 VAX_G_float_to_VAX_D_float (float * /* d */, int /* len */) |
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377 { |
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378 gripe_data_conversion ("VAX G float", "VAX D"); |
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379 } |
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380 |
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381 static void |
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382 Cray_to_VAX_D_float (float * /* d */, int /* len */) |
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383 { |
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384 gripe_data_conversion ("Cray", "VAX D"); |
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385 } |
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386 |
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387 static void |
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388 IEEE_little_double_to_VAX_G_double (double * /* d */, int /* len */) |
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389 { |
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390 gripe_data_conversion ("IEEE little endian", "VAX G"); |
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391 } |
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392 |
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393 static void |
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394 IEEE_big_double_to_VAX_G_double (double * /* d */, int /* len */) |
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395 { |
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396 gripe_data_conversion ("IEEE big endian", "VAX G"); |
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397 } |
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398 |
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399 static void |
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400 VAX_D_double_to_VAX_G_double (double * /* d */, int /* len */) |
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401 { |
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402 gripe_data_conversion ("VAX D float", "VAX G"); |
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403 } |
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404 |
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405 static void |
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406 Cray_to_VAX_G_double (double * /* d */, int /* len */) |
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407 { |
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408 gripe_data_conversion ("VAX G float", "VAX G"); |
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409 } |
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410 |
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411 static void |
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412 IEEE_little_float_to_VAX_G_float (float * /* d */, int /* len */) |
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413 { |
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414 gripe_data_conversion ("IEEE little endian", "VAX G"); |
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415 } |
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416 |
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417 static void |
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418 IEEE_big_float_to_VAX_G_float (float * /* d */, int /* len */) |
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419 { |
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420 gripe_data_conversion ("IEEE big endian", "VAX G"); |
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421 } |
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422 |
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423 static void |
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424 VAX_D_float_to_VAX_G_float (float * /* d */, int /* len */) |
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425 { |
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426 gripe_data_conversion ("VAX D float", "VAX G"); |
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427 } |
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428 |
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429 static void |
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430 Cray_to_VAX_G_float (float * /* d */, int /* len */) |
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431 { |
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432 gripe_data_conversion ("VAX G float", "VAX G"); |
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433 } |
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434 |
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435 void |
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436 do_double_format_conversion (double *data, int len, |
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2317
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437 oct_mach_info::float_format fmt) |
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1960
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438 { |
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2317
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439 switch (oct_mach_info::native_float_format ()) |
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1960
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440 { |
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2317
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441 case oct_mach_info::ieee_little_endian: |
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1960
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442 switch (fmt) |
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443 { |
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2317
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444 case oct_mach_info::ieee_little_endian: |
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1960
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445 break; |
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446 |
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2317
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447 case oct_mach_info::ieee_big_endian: |
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1960
|
448 IEEE_big_double_to_IEEE_little_double (data, len); |
|
|
449 break; |
|
|
450 |
|
2317
|
451 case oct_mach_info::vax_d: |
|
1960
|
452 VAX_D_double_to_IEEE_little_double (data, len); |
|
|
453 break; |
|
|
454 |
|
2317
|
455 case oct_mach_info::vax_g: |
|
1960
|
456 VAX_G_double_to_IEEE_little_double (data, len); |
|
|
457 break; |
|
|
458 |
|
2317
|
459 case oct_mach_info::cray: |
|
1960
|
460 Cray_to_IEEE_little_double (data, len); |
|
|
461 break; |
|
|
462 |
|
|
463 default: |
|
|
464 gripe_unrecognized_float_fmt (); |
|
|
465 break; |
|
|
466 } |
|
|
467 break; |
|
|
468 |
|
2317
|
469 case oct_mach_info::ieee_big_endian: |
|
1960
|
470 switch (fmt) |
|
|
471 { |
|
2317
|
472 case oct_mach_info::ieee_little_endian: |
|
1960
|
473 IEEE_little_double_to_IEEE_big_double (data, len); |
|
|
474 break; |
|
|
475 |
|
2317
|
476 case oct_mach_info::ieee_big_endian: |
|
1960
|
477 break; |
|
|
478 |
|
2317
|
479 case oct_mach_info::vax_d: |
|
1960
|
480 VAX_D_double_to_IEEE_big_double (data, len); |
|
|
481 break; |
|
|
482 |
|
2317
|
483 case oct_mach_info::vax_g: |
|
1960
|
484 VAX_G_double_to_IEEE_big_double (data, len); |
|
|
485 break; |
|
|
486 |
|
2317
|
487 case oct_mach_info::cray: |
|
1960
|
488 Cray_to_IEEE_big_double (data, len); |
|
|
489 break; |
|
|
490 |
|
|
491 default: |
|
|
492 gripe_unrecognized_float_fmt (); |
|
|
493 break; |
|
|
494 } |
|
|
495 break; |
|
|
496 |
|
2317
|
497 case oct_mach_info::vax_d: |
|
1960
|
498 switch (fmt) |
|
|
499 { |
|
2317
|
500 case oct_mach_info::ieee_little_endian: |
|
1960
|
501 IEEE_little_double_to_VAX_D_double (data, len); |
|
|
502 break; |
|
|
503 |
|
2317
|
504 case oct_mach_info::ieee_big_endian: |
|
1960
|
505 IEEE_big_double_to_VAX_D_double (data, len); |
|
|
506 break; |
|
|
507 |
|
2317
|
508 case oct_mach_info::vax_d: |
|
1960
|
509 break; |
|
|
510 |
|
2317
|
511 case oct_mach_info::vax_g: |
|
1960
|
512 VAX_G_double_to_VAX_D_double (data, len); |
|
|
513 break; |
|
|
514 |
|
2317
|
515 case oct_mach_info::cray: |
|
1960
|
516 Cray_to_VAX_D_double (data, len); |
|
|
517 break; |
|
|
518 |
|
|
519 default: |
|
|
520 gripe_unrecognized_float_fmt (); |
|
|
521 break; |
|
|
522 } |
|
|
523 break; |
|
|
524 |
|
2317
|
525 case oct_mach_info::vax_g: |
|
1960
|
526 switch (fmt) |
|
|
527 { |
|
2317
|
528 case oct_mach_info::ieee_little_endian: |
|
1960
|
529 IEEE_little_double_to_VAX_G_double (data, len); |
|
|
530 break; |
|
|
531 |
|
2317
|
532 case oct_mach_info::ieee_big_endian: |
|
1960
|
533 IEEE_big_double_to_VAX_G_double (data, len); |
|
|
534 break; |
|
|
535 |
|
2317
|
536 case oct_mach_info::vax_d: |
|
1960
|
537 VAX_D_double_to_VAX_G_double (data, len); |
|
|
538 break; |
|
|
539 |
|
2317
|
540 case oct_mach_info::vax_g: |
|
1960
|
541 break; |
|
|
542 |
|
2317
|
543 case oct_mach_info::cray: |
|
1960
|
544 Cray_to_VAX_G_double (data, len); |
|
|
545 break; |
|
|
546 |
|
|
547 default: |
|
|
548 gripe_unrecognized_float_fmt (); |
|
|
549 break; |
|
|
550 } |
|
|
551 break; |
|
|
552 |
|
|
553 default: |
|
|
554 (*current_liboctave_error_handler) |
|
|
555 ("impossible state reached in file `%s' at line %d", |
|
|
556 __FILE__, __LINE__); |
|
|
557 break; |
|
|
558 } |
|
|
559 } |
|
|
560 |
|
|
561 void |
|
|
562 do_float_format_conversion (float *data, int len, |
|
2317
|
563 oct_mach_info::float_format fmt) |
|
1960
|
564 { |
|
2317
|
565 switch (oct_mach_info::native_float_format ()) |
|
1960
|
566 { |
|
2317
|
567 case oct_mach_info::ieee_little_endian: |
|
1960
|
568 switch (fmt) |
|
|
569 { |
|
2317
|
570 case oct_mach_info::ieee_little_endian: |
|
1960
|
571 break; |
|
|
572 |
|
2317
|
573 case oct_mach_info::ieee_big_endian: |
|
1960
|
574 IEEE_big_float_to_IEEE_little_float (data, len); |
|
|
575 break; |
|
|
576 |
|
2317
|
577 case oct_mach_info::vax_d: |
|
1960
|
578 VAX_D_float_to_IEEE_little_float (data, len); |
|
|
579 break; |
|
|
580 |
|
2317
|
581 case oct_mach_info::vax_g: |
|
1960
|
582 VAX_G_float_to_IEEE_little_float (data, len); |
|
|
583 break; |
|
|
584 |
|
2317
|
585 case oct_mach_info::cray: |
|
1960
|
586 Cray_to_IEEE_little_float (data, len); |
|
|
587 break; |
|
|
588 |
|
|
589 default: |
|
|
590 gripe_unrecognized_float_fmt (); |
|
|
591 break; |
|
|
592 } |
|
|
593 break; |
|
|
594 |
|
2317
|
595 case oct_mach_info::ieee_big_endian: |
|
1960
|
596 switch (fmt) |
|
|
597 { |
|
2317
|
598 case oct_mach_info::ieee_little_endian: |
|
1960
|
599 IEEE_little_float_to_IEEE_big_float (data, len); |
|
|
600 break; |
|
|
601 |
|
2317
|
602 case oct_mach_info::ieee_big_endian: |
|
1960
|
603 break; |
|
|
604 |
|
2317
|
605 case oct_mach_info::vax_d: |
|
1960
|
606 VAX_D_float_to_IEEE_big_float (data, len); |
|
|
607 break; |
|
|
608 |
|
2317
|
609 case oct_mach_info::vax_g: |
|
1960
|
610 VAX_G_float_to_IEEE_big_float (data, len); |
|
|
611 break; |
|
|
612 |
|
2317
|
613 case oct_mach_info::cray: |
|
1960
|
614 Cray_to_IEEE_big_float (data, len); |
|
|
615 break; |
|
|
616 |
|
|
617 default: |
|
|
618 gripe_unrecognized_float_fmt (); |
|
|
619 break; |
|
|
620 } |
|
|
621 break; |
|
|
622 |
|
2317
|
623 case oct_mach_info::vax_d: |
|
1960
|
624 switch (fmt) |
|
|
625 { |
|
2317
|
626 case oct_mach_info::ieee_little_endian: |
|
1960
|
627 IEEE_little_float_to_VAX_D_float (data, len); |
|
|
628 break; |
|
|
629 |
|
2317
|
630 case oct_mach_info::ieee_big_endian: |
|
1960
|
631 IEEE_big_float_to_VAX_D_float (data, len); |
|
|
632 break; |
|
|
633 |
|
2317
|
634 case oct_mach_info::vax_d: |
|
1960
|
635 break; |
|
|
636 |
|
2317
|
637 case oct_mach_info::vax_g: |
|
1960
|
638 VAX_G_float_to_VAX_D_float (data, len); |
|
|
639 break; |
|
|
640 |
|
2317
|
641 case oct_mach_info::cray: |
|
1960
|
642 Cray_to_VAX_D_float (data, len); |
|
|
643 break; |
|
|
644 |
|
|
645 default: |
|
|
646 gripe_unrecognized_float_fmt (); |
|
|
647 break; |
|
|
648 } |
|
|
649 break; |
|
|
650 |
|
2317
|
651 case oct_mach_info::vax_g: |
|
1960
|
652 switch (fmt) |
|
|
653 { |
|
2317
|
654 case oct_mach_info::ieee_little_endian: |
|
1960
|
655 IEEE_little_float_to_VAX_G_float (data, len); |
|
|
656 break; |
|
|
657 |
|
2317
|
658 case oct_mach_info::ieee_big_endian: |
|
1960
|
659 IEEE_big_float_to_VAX_G_float (data, len); |
|
|
660 break; |
|
|
661 |
|
2317
|
662 case oct_mach_info::vax_d: |
|
1960
|
663 VAX_D_float_to_VAX_G_float (data, len); |
|
|
664 break; |
|
|
665 |
|
2317
|
666 case oct_mach_info::vax_g: |
|
1960
|
667 break; |
|
|
668 |
|
2317
|
669 case oct_mach_info::cray: |
|
1960
|
670 Cray_to_VAX_G_float (data, len); |
|
|
671 break; |
|
|
672 |
|
|
673 default: |
|
|
674 gripe_unrecognized_float_fmt (); |
|
|
675 break; |
|
|
676 } |
|
|
677 break; |
|
|
678 |
|
|
679 default: |
|
|
680 (*current_liboctave_error_handler) |
|
|
681 ("impossible state reached in file `%s' at line %d", |
|
|
682 __FILE__, __LINE__); |
|
|
683 break; |
|
|
684 } |
|
|
685 } |
|
|
686 |
|
|
687 void |
|
|
688 read_doubles (istream& is, double *data, save_type type, int len, |
|
2317
|
689 int swap, oct_mach_info::float_format fmt) |
|
1960
|
690 { |
|
|
691 switch (type) |
|
|
692 { |
|
|
693 case LS_U_CHAR: |
|
|
694 LS_DO_READ (unsigned char, swap, data, 1, len, is); |
|
|
695 break; |
|
|
696 |
|
|
697 case LS_U_SHORT: |
|
|
698 LS_DO_READ (unsigned TWO_BYTE_INT, swap, data, 2, len, is); |
|
|
699 break; |
|
|
700 |
|
|
701 case LS_U_INT: |
|
|
702 LS_DO_READ (unsigned FOUR_BYTE_INT, swap, data, 4, len, is); |
|
|
703 break; |
|
|
704 |
|
|
705 case LS_CHAR: |
|
|
706 LS_DO_READ (signed char, swap, data, 1, len, is); |
|
|
707 break; |
|
|
708 |
|
|
709 case LS_SHORT: |
|
|
710 LS_DO_READ (TWO_BYTE_INT, swap, data, 2, len, is); |
|
|
711 break; |
|
|
712 |
|
|
713 case LS_INT: |
|
|
714 LS_DO_READ (FOUR_BYTE_INT, swap, data, 4, len, is); |
|
|
715 break; |
|
|
716 |
|
|
717 case LS_FLOAT: |
|
|
718 { |
|
3145
|
719 volatile float *ptr = X_CAST (float *, data); |
|
1960
|
720 is.read (data, 4 * len); |
|
3145
|
721 do_float_format_conversion (X_CAST (float *, data), len, fmt); |
|
1960
|
722 float tmp = ptr[0]; |
|
|
723 for (int i = len - 1; i > 0; i--) |
|
|
724 data[i] = ptr[i]; |
|
|
725 data[0] = tmp; |
|
|
726 } |
|
|
727 break; |
|
|
728 |
|
3359
|
729 case LS_DOUBLE: // No conversion necessary. |
|
1960
|
730 is.read (data, 8 * len); |
|
|
731 do_double_format_conversion (data, len, fmt); |
|
|
732 break; |
|
|
733 |
|
|
734 default: |
|
|
735 is.clear (ios::failbit|is.rdstate ()); |
|
|
736 break; |
|
|
737 } |
|
|
738 } |
|
|
739 |
|
|
740 void |
|
|
741 write_doubles (ostream& os, const double *data, save_type type, int len) |
|
|
742 { |
|
|
743 switch (type) |
|
|
744 { |
|
|
745 case LS_U_CHAR: |
|
|
746 LS_DO_WRITE (unsigned char, data, 1, len, os); |
|
|
747 break; |
|
|
748 |
|
|
749 case LS_U_SHORT: |
|
|
750 LS_DO_WRITE (unsigned TWO_BYTE_INT, data, 2, len, os); |
|
|
751 break; |
|
|
752 |
|
|
753 case LS_U_INT: |
|
|
754 LS_DO_WRITE (unsigned FOUR_BYTE_INT, data, 4, len, os); |
|
|
755 break; |
|
|
756 |
|
|
757 case LS_CHAR: |
|
|
758 LS_DO_WRITE (signed char, data, 1, len, os); |
|
|
759 break; |
|
|
760 |
|
|
761 case LS_SHORT: |
|
|
762 LS_DO_WRITE (TWO_BYTE_INT, data, 2, len, os); |
|
|
763 break; |
|
|
764 |
|
|
765 case LS_INT: |
|
|
766 LS_DO_WRITE (FOUR_BYTE_INT, data, 4, len, os); |
|
|
767 break; |
|
|
768 |
|
|
769 case LS_FLOAT: |
|
|
770 LS_DO_WRITE (float, data, 4, len, os); |
|
|
771 break; |
|
|
772 |
|
3359
|
773 case LS_DOUBLE: // No conversion necessary. |
|
1960
|
774 { |
|
3145
|
775 char tmp_type = X_CAST (char, type); |
|
1960
|
776 os.write (&tmp_type, 1); |
|
|
777 os.write (data, 8 * len); |
|
|
778 } |
|
|
779 break; |
|
|
780 |
|
|
781 default: |
|
|
782 (*current_liboctave_error_handler) |
|
|
783 ("unrecognized data format requested"); |
|
|
784 break; |
|
|
785 } |
|
|
786 } |
|
|
787 |
|
|
788 /* |
|
|
789 ;;; Local Variables: *** |
|
|
790 ;;; mode: C++ *** |
|
|
791 ;;; End: *** |
|
|
792 */ |
