[7] | 1 | % File: itload.m |
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| 2 | % Brief: Load an IT++ itfile content to Matlab/Octave workspace |
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| 3 | % Author: Tony Ottosson and Adam Piatyszek |
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| 4 | % |
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| 5 | % Usage: itload("fname.it") |
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| 6 | % |
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| 7 | % This functions loads all variables from an IT++ file format to the |
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| 8 | % Matlab/Octave workspace. |
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| 9 | % |
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| 10 | % ------------------------------------------------------------------------- |
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| 11 | % |
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| 12 | % IT++ - C++ library of mathematical, signal processing, speech processing, |
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| 13 | % and communications classes and functions |
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| 14 | % |
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| 15 | % Copyright (C) 1995-2007 (see AUTHORS file for a list of contributors) |
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| 16 | % |
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| 17 | % This program is free software; you can redistribute it and/or modify |
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| 18 | % it under the terms of the GNU General Public License as published by |
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| 19 | % the Free Software Foundation; either version 2 of the License, or |
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| 20 | % (at your option) any later version. |
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| 21 | % |
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| 22 | % This program is distributed in the hope that it will be useful, |
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| 23 | % but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 24 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 25 | % GNU General Public License for more details. |
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| 26 | % |
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| 27 | % You should have received a copy of the GNU General Public License |
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| 28 | % along with this program; if not, write to the Free Software |
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| 29 | % Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 30 | % |
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| 31 | % ------------------------------------------------------------------------- |
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| 32 | |
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| 33 | function itload(fname) |
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| 34 | |
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| 35 | [fid, err_msg] = fopen(fname, 'rb', 'ieee-le'); |
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| 36 | if (fid == -1) |
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| 37 | fname = [fname '.it']; |
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| 38 | [fid, err_msg2] = fopen(fname, 'rb', 'ieee-le'); |
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| 39 | if (fid == -1) |
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| 40 | error(err_msg); |
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| 41 | end |
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| 42 | end |
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| 43 | |
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| 44 | % Check file size |
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| 45 | fseek(fid, 0, 'eof'); |
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| 46 | file_size = ftell(fid); |
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| 47 | fseek(fid, 0, 'bof'); |
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| 48 | |
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| 49 | % Read "IT++" magic string |
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| 50 | [d, n] = fread(fid, 5, 'char'); |
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| 51 | if (n ~= 5 | d(1:4) ~= [73 84 43 43]') |
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| 52 | error('Not an IT++ file!'); |
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| 53 | end |
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| 54 | |
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| 55 | % Check the IT++ file version |
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| 56 | if (d(5) ~= 3) |
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| 57 | error('Only IT++ file version 3 is supported by this function!'); |
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| 58 | end |
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| 59 | |
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| 60 | while (1) |
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| 61 | p = ftell(fid); % Save current file position |
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| 62 | [d1, n] = fread(fid, 3, 'uint64'); % Read header, data, and total block sizes |
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| 63 | name = fgetstr(fid); % Read current variable name |
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| 64 | type = fgetstr(fid); % Read current variable type |
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| 65 | fseek(fid, p+d1(1), 'bof'); % Skip header bytes |
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| 66 | |
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| 67 | if (length(type) == 0) % A deleted entry -> skip it |
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| 68 | |
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| 69 | % --- bin --- |
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| 70 | elseif (strcmp(type, 'bin')) |
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| 71 | [d, n] = fread(fid, 1, 'char'); |
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| 72 | assignin('caller', name, d); |
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| 73 | % --- int8 (char) --- |
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| 74 | elseif (strcmp(type, 'int8')) |
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| 75 | [d, n] = fread(fid, 1, 'int8'); |
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| 76 | assignin('caller', name, d); |
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| 77 | % --- int16 (short) --- |
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| 78 | elseif (strcmp(type, 'int16')) |
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| 79 | [d, n] = fread(fid, 1, 'int16'); |
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| 80 | assignin('caller', name, d); |
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| 81 | % --- int32 (int) --- |
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| 82 | elseif (strcmp(type, 'int32')) |
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| 83 | [d, n] = fread(fid, 1, 'int32'); |
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| 84 | assignin('caller', name, d); |
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| 85 | % --- float32 (float) --- |
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| 86 | elseif (strcmp(type, 'float32')) |
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| 87 | [d, n] = fread(fid, 1, 'float32'); |
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| 88 | assignin('caller', name, d); |
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| 89 | % --- float64 (double) --- |
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| 90 | elseif (strcmp(type, 'float64')) |
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| 91 | [d, n] = fread(fid, 1, 'float64'); |
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| 92 | assignin('caller', name, d); |
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| 93 | % --- cfloat32 (complex<float>) --- |
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| 94 | elseif (strcmp(type, 'cfloat32')) |
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| 95 | [d, n] = fread(fid, 2, 'float32'); |
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| 96 | d = complex(d(1), d(2)); |
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| 97 | assignin('caller', name, d); |
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| 98 | % --- cfloat64 (complex<double>) --- |
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| 99 | elseif (strcmp(type, 'cfloat64')) |
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| 100 | [d, n] = fread(fid, 2, 'float64'); |
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| 101 | d = complex(d(1), d(2)); |
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| 102 | assignin('caller', name, d); |
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| 103 | |
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| 104 | % --- bvec --- |
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| 105 | elseif (strcmp(type, 'bvec')) |
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| 106 | [size, n] = fread(fid, 1, 'uint64'); |
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| 107 | [d, n] = fread(fid, size, 'char'); |
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| 108 | assignin('caller', name, d); |
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| 109 | % --- svec --- |
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| 110 | elseif (strcmp(type, 'svec')) |
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| 111 | [size, n] = fread(fid, 1, 'uint64'); |
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| 112 | [d, n] = fread(fid, size, 'int16'); |
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| 113 | assignin('caller', name, d); |
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| 114 | % --- ivec --- |
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| 115 | elseif (strcmp(type, 'ivec')) |
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| 116 | [size, n] = fread(fid, 1, 'uint64'); |
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| 117 | [d, n] = fread(fid, size, 'int32'); |
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| 118 | assignin('caller', name, d); |
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| 119 | % --- fvec --- |
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| 120 | elseif (strcmp(type, 'fvec')) |
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| 121 | [size, n] = fread(fid, 1, 'uint64'); |
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| 122 | [d, n] = fread(fid, size, 'float32'); |
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| 123 | assignin('caller', name, d); |
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| 124 | % --- dvec --- |
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| 125 | elseif (strcmp(type, 'dvec')) |
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| 126 | [size, n] = fread(fid, 1, 'uint64'); |
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| 127 | [d, n] = fread(fid, size, 'float64'); |
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| 128 | assignin('caller', name, d); |
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| 129 | % --- fcvec --- |
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| 130 | elseif (strcmp(type, 'fcvec')) |
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| 131 | [size, n] = fread(fid, 1, 'uint64'); |
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| 132 | [d, n] = fread(fid, size*2, 'float32'); |
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| 133 | d = complex(d(1:2:end), d(2:2:end)); |
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| 134 | assignin('caller', name, d); |
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| 135 | % --- dcvec --- |
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| 136 | elseif (strcmp(type, 'dcvec')) |
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| 137 | [size, n] = fread(fid, 1, 'uint64'); |
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| 138 | [d, n] = fread(fid, size*2, 'float64'); |
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| 139 | d = complex(d(1:2:end), d(2:2:end)); |
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| 140 | assignin('caller', name, d); |
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| 141 | % --- string --- |
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| 142 | elseif (strcmp(type, 'string')) |
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| 143 | [size, n] = fread(fid, 1, 'uint64'); |
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| 144 | [d, n] = fread(fid, size, 'char'); |
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| 145 | d = char(d); |
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| 146 | assignin('caller', name, d); |
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| 147 | |
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| 148 | % --- bmat --- |
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| 149 | elseif (strcmp(type, 'bmat')) |
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| 150 | [size, n] = fread(fid, 2, 'uint64'); |
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| 151 | [d, n] = fread(fid, size', 'char'); |
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| 152 | assignin('caller', name, d); |
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| 153 | % --- smat --- |
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| 154 | elseif (strcmp(type, 'smat')) |
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| 155 | [size, n] = fread(fid, 2, 'uint64'); |
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| 156 | [d, n] = fread(fid, size', 'int16'); |
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| 157 | assignin('caller', name, d); |
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| 158 | % --- imat --- |
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| 159 | elseif (strcmp(type, 'imat')) |
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| 160 | [size, n] = fread(fid, 2, 'uint64'); |
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| 161 | [d, n] = fread(fid, size', 'int32'); |
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| 162 | assignin('caller', name, d); |
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| 163 | % --- fmat --- |
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| 164 | elseif (strcmp(type, 'fmat')) |
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| 165 | [size, n] = fread(fid, 2, 'uint64'); |
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| 166 | [d, n] = fread(fid, size', 'float32'); |
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| 167 | assignin('caller', name, d); |
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| 168 | % --- dmat --- |
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| 169 | elseif (strcmp(type, 'dmat')) |
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| 170 | [size, n] = fread(fid, 2, 'uint64'); |
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| 171 | [d, n] = fread(fid, size', 'float64'); |
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| 172 | assignin('caller', name, d); |
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| 173 | % --- fcmat --- |
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| 174 | elseif (strcmp(type, 'fcmat')) |
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| 175 | [size, n] = fread(fid, 2, 'uint64'); |
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| 176 | [d, n] = fread(fid, size(1)*size(2)*2, 'float32'); |
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| 177 | d = reshape(complex(d(1:2:end), d(2:2:end)), size(1), size(2)); |
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| 178 | assignin('caller', name, d); |
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| 179 | % --- dcmat --- |
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| 180 | elseif (strcmp(type, 'dcmat')) |
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| 181 | [size, n] = fread(fid, 2, 'uint64'); |
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| 182 | [d, n] = fread(fid, size(1)*size(2)*2, 'float64'); |
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| 183 | d = reshape(complex(d(1:2:end), d(2:2:end)), size(1), size(2)); |
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| 184 | assignin('caller', name, d); |
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| 185 | |
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| 186 | % --- bArray --- |
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| 187 | elseif (strcmp(type, 'bArray')) |
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| 188 | [size, n] = fread(fid, 1, 'uint64'); |
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| 189 | [d, n] = fread(fid, size, 'char'); |
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| 190 | assignin('caller', name, d); |
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| 191 | % --- sArray --- |
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| 192 | elseif (strcmp(type, 'sArray')) |
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| 193 | [size, n] = fread(fid, 1, 'uint64'); |
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| 194 | [d, n] = fread(fid, size, 'int16'); |
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| 195 | assignin('caller', name, d); |
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| 196 | % --- iArray --- |
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| 197 | elseif (strcmp(type, 'iArray')) |
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| 198 | [size, n] = fread(fid, 1, 'uint64'); |
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| 199 | [d, n] = fread(fid, size, 'int32'); |
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| 200 | assignin('caller', name, d); |
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| 201 | % --- fArray --- |
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| 202 | elseif (strcmp(type, 'fArray')) |
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| 203 | [size, n] = fread(fid, 1, 'uint64'); |
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| 204 | [d, n] = fread(fid, size, 'float32'); |
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| 205 | assignin('caller', name, d); |
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| 206 | % --- dArray --- |
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| 207 | elseif (strcmp(type, 'dArray')) |
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| 208 | [size, n] = fread(fid, 1, 'uint64'); |
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| 209 | [d, n] = fread(fid, size, 'float64'); |
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| 210 | assignin('caller', name, d); |
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| 211 | % --- fcArray --- |
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| 212 | elseif (strcmp(type, 'fcArray')) |
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| 213 | [size, n] = fread(fid, 1, 'uint64'); |
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| 214 | [d, n] = fread(fid, size*2, 'float32'); |
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| 215 | d = complex(d(1:2:end), d(2:2:end)); |
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| 216 | assignin('caller', name, d); |
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| 217 | % --- dcArray --- |
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| 218 | elseif (strcmp(type, 'dcArray')) |
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| 219 | [size, n] = fread(fid, 1, 'uint64'); |
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| 220 | [d, n] = fread(fid, size*2, 'float64'); |
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| 221 | d = complex(d(1:2:end), d(2:2:end)); |
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| 222 | assignin('caller', name, d); |
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| 223 | |
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| 224 | % --- bvecArray --- |
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| 225 | elseif (strcmp(type, 'bvecArray')) |
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| 226 | [size, n] = fread(fid, 1, 'uint64'); |
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| 227 | clear d2; |
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| 228 | for i=1:size; |
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| 229 | [size2, n] = fread(fid, 1, 'uint64'); |
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| 230 | [d, n] = fread(fid, size2, 'char'); |
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| 231 | d2{i} = d; |
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| 232 | end |
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| 233 | assignin('caller', name, d2); |
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| 234 | % --- svecArray --- |
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| 235 | elseif (strcmp(type, 'svecArray')) |
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| 236 | [size, n] = fread(fid, 1, 'uint64'); |
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| 237 | clear d2; |
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| 238 | for i=1:size; |
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| 239 | [size2, n] = fread(fid, 1, 'uint64'); |
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| 240 | [d, n] = fread(fid, size2, 'int16'); |
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| 241 | d2{i} = d; |
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| 242 | end |
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| 243 | assignin('caller', name, d2); |
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| 244 | % --- ivecArray --- |
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| 245 | elseif (strcmp(type, 'ivecArray')) |
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| 246 | [size, n] = fread(fid, 1, 'uint64'); |
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| 247 | clear d2; |
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| 248 | for i=1:size; |
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| 249 | [size2, n] = fread(fid, 1, 'uint64'); |
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| 250 | [d, n] = fread(fid, size2, 'int32'); |
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| 251 | d2{i} = d; |
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| 252 | end |
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| 253 | assignin('caller', name, d2); |
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| 254 | % --- vecArray --- |
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| 255 | elseif (strcmp(type, 'vecArray')) |
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| 256 | [size, n] = fread(fid, 1, 'uint64'); |
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| 257 | clear d2; |
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| 258 | for i=1:size; |
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| 259 | [size2, n] = fread(fid, 1, 'uint64'); |
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| 260 | [d, n] = fread(fid, size2, 'float64'); |
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| 261 | d2{i} = d; |
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| 262 | end |
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| 263 | assignin('caller', name, d2); |
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| 264 | % --- cvecArray --- |
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| 265 | elseif (strcmp(type, 'cvecArray')) |
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| 266 | [size, n] = fread(fid, 1, 'uint64'); |
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| 267 | clear d2; |
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| 268 | for i=1:size; |
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| 269 | [size2, n] = fread(fid, 1, 'uint64'); |
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| 270 | [d, n] = fread(fid, size*2, 'float64'); |
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| 271 | d2{i} = complex(d(1:2:end), d(2:2:end)); |
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| 272 | end |
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| 273 | assignin('caller', name, d2); |
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| 274 | % --- stringArray --- |
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| 275 | elseif (strcmp(type, 'stringArray')) |
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| 276 | [size, n] = fread(fid, 1, 'uint64'); |
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| 277 | clear d2; |
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| 278 | for i=1:size; |
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| 279 | [size2, n] = fread(fid, 1, 'uint64'); |
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| 280 | [d, n] = fread(fid, size2, 'char'); |
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| 281 | d2{i} = char(d); |
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| 282 | end |
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| 283 | assignin('caller', name, d2); |
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| 284 | |
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| 285 | % --- bmatArray --- |
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| 286 | elseif (strcmp(type, 'bmatArray')) |
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| 287 | [size, n] = fread(fid, 1, 'uint64'); |
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| 288 | clear d2; |
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| 289 | for i=1:size; |
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| 290 | [size2, n] = fread(fid, 2, 'uint64'); |
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| 291 | [d, n] = fread(fid, size2', 'char'); |
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| 292 | d2{i} = d; |
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| 293 | end |
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| 294 | assignin('caller', name, d2); |
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| 295 | % --- smatArray --- |
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| 296 | elseif (strcmp(type, 'smatArray')) |
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| 297 | [size, n] = fread(fid, 1, 'uint64'); |
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| 298 | clear d2; |
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| 299 | for i=1:size; |
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| 300 | [size2, n] = fread(fid, 2, 'uint64'); |
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| 301 | [d, n] = fread(fid, size2', 'int16'); |
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| 302 | d2{i} = d; |
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| 303 | end |
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| 304 | assignin('caller', name, d2); |
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| 305 | % --- imatArray --- |
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| 306 | elseif (strcmp(type, 'imatArray')) |
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| 307 | [size, n] = fread(fid, 1, 'uint64'); |
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| 308 | clear d2; |
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| 309 | for i=1:size; |
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| 310 | [size2, n] = fread(fid, 2, 'uint64'); |
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| 311 | [d, n] = fread(fid, size2', 'int32'); |
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| 312 | d2{i} = d; |
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| 313 | end |
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| 314 | assignin('caller', name, d2); |
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| 315 | % --- matArray --- |
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| 316 | elseif (strcmp(type, 'matArray')) |
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| 317 | [size, n] = fread(fid, 1, 'uint64'); |
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| 318 | clear d2; |
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| 319 | for i=1:size; |
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| 320 | [size2, n] = fread(fid, 2, 'uint64'); |
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| 321 | [d, n] = fread(fid, size2', 'float64'); |
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| 322 | d2{i} = d; |
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| 323 | end |
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| 324 | assignin('caller', name, d2); |
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| 325 | % --- cmatArray --- |
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| 326 | elseif (strcmp(type, 'cmatArray')) |
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| 327 | [size, n] = fread(fid, 1, 'uint64'); |
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| 328 | clear d2; |
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| 329 | for i=1:size; |
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| 330 | [size2, n] = fread(fid, 2, 'uint64'); |
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| 331 | [d, n] = fread(fid, size2(1)*size2(2)*2, 'float64'); |
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| 332 | d2{i} = reshape(complex(d(1:2:end), d(2:2:end)), size2(1), size2(2)); |
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| 333 | end |
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| 334 | assignin('caller', name, d2); |
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| 335 | |
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| 336 | % --- else --- |
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| 337 | else |
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| 338 | warning(['Not supported type: ' type]); |
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| 339 | end |
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| 340 | |
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| 341 | if (p + d1(3) >= file_size) |
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| 342 | break; |
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| 343 | else |
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| 344 | fseek(fid, p+d1(3), 'bof'); |
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| 345 | end |
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| 346 | |
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| 347 | end |
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| 348 | |
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| 349 | fclose(fid); |
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| 350 | |
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| 351 | |
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| 352 | |
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| 353 | function str = fgetstr(fid) |
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| 354 | str = ''; |
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| 355 | while (1) |
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| 356 | [d, n] = fread(fid, 1, 'char'); |
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| 357 | if (d == 0) |
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| 358 | break; |
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| 359 | end |
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| 360 | str = [str char(d)]; |
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| 361 | end |
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