13 const int BlackFlag = 1 << 0;
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14 const int WhiteFlag = 1 << 1;
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16 const int ColourNone = 0;
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17 const int Black = BlackFlag;
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18 const int White = WhiteFlag;
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19 const int ColourNb = 3;
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23 extern bool colour_is_ok (int colour);
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25 extern bool colour_is_white (int colour);
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26 extern bool colour_is_black (int colour);
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27 extern bool colour_equal (int colour_1, int colour_2);
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29 extern int colour_opp (int colour);
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31 #endif // !defined COLOUR_H
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