====== Logic operators ======
===== Definition =====
The logic operators **AND** , **OR** , **NAND** , **NOR** , **XOR**, **XNOR** and **NOT** are defined for the predefined data types //bit// and //boolean// . They can also be used for one-dimensional array-types ( //Array// ) whose elements are of the type //bit// or //boolean// . If the operators **AND** , **OR** , **NAND** , **NOR** , **XOR** and **XNOR** are to be used in this last case the following has to be taken into consideration:

  * Both arrays have to have the same length.
  * The operation is carried out with the corresponding elements of both arrays.
  * The result is a array which has the same field depth as the left operand.

Basically the same is valid for the operator **NOT** , however, the operation is carried out with every individual element of the array. All binary logic operators have the lowest priority. The unary operator **NOT** has top priority. 

===== Truth table =====
^A    ^B    ^A AND B ^
|F    |F    |    F   |
|T    |F    |    F   |
|F    |T    |    F   |
|T    |T    |    T   |

^A    ^B    ^A NAND B ^
|F    F     |  T      |
|T    F     |  T      |
|F    T     |  T      |
|T    T     |  F      |

^A    ^B    ^A OR B ^
|F    |F    |    F  |
|T    |F    |    T  |
|F    |T    |    T  |
|T    |T    |    T  |

^A    ^B    ^A NOR B ^
|F    |F    |    T   |
|T    |F    |    F   |
|F    |T    |    F   |
|T    |T    |    F   |

^A    ^B    ^A XOR B ^
|F    |F    |    F   |
|T    |F    |    T   |
|F    |T    |    T   |
|T    |T    |    F   |

^A    ^B    ^A XNOR B ^
|F    |F    |    T    |
|T    |F    |    F    |
|F    |T    |    F    |
|T    |T    |    T    |

^A         ^NOT A ^
|F         | T    |
|T         | F    |

**T** stands for true (type //boolean// ), '1' (type //bit// ).

**F** stands for false (type //boolean// ), '0' (type //bit// ).