Last change
on this file since 166 was
166,
checked in by (none), 14 years ago
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HadoopA51: imported git repository from github
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File size:
728 bytes
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1 | package ro.pub.cs.pp.a51hadoop.algorithm.a51; |
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2 | |
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3 | public class A51Constants |
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4 | { |
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5 | /* |
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6 | * which bits of a 32bit variable actually play a role |
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7 | */ |
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8 | public final static int R_mask[] = |
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9 | { |
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10 | /* 19 bits, numbered 0..18 */ |
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11 | 0x07FFFF, |
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12 | /* 22 bits, numbered 0..21 */ |
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13 | 0x3FFFFF, |
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14 | /* 23 bits, numbered 0..22 */ |
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15 | 0x7FFFFF, |
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16 | }; |
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17 | |
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18 | |
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19 | /* Middle bit of each of the shift registers */ |
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20 | public final static int R_middle_pos[] = |
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21 | { |
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22 | 8, |
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23 | 10, |
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24 | 10, |
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25 | }; |
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26 | |
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27 | |
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28 | /* Feedback taps. */ |
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29 | public final static int R_feedback_taps[] = |
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30 | { |
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31 | (1 << 13) | ( 1 << 16) | (1 << 17) | ( 1 << 18), |
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32 | (1 << 20) | ( 1 << 21), |
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33 | (1 << 7) | ( 1 << 20) | (1 << 21) | ( 1 << 22), |
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34 | }; |
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35 | |
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36 | |
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37 | /* Output taps. */ |
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38 | public final static int R_output_taps[] = |
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39 | { |
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40 | 18, |
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41 | 21, |
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42 | 22, |
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43 | }; |
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44 | } |
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