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Array functions
    		• bitand()
    		• bitandnot()
    		• bitnot()
    		• bitor()
    		• bitsum()
    		• bittrunc()
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    		• nbits()
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    Topic complex Array functions
    Function bitand()
    Short Intersection of two bit fields
    Syntax BITAND(VAR M1 : TBITS; VAR M2 : TBITS) : INTEGER
    Parameter M1 : TBITS[]
    M2 : TBITS[]
    Return NBITS(M1) after operation (= cardinality of M1)
    See also:
    bitor() bitandnot() bitnot() bittrunc() bitsum()
    Description M1 and M2 are understood as characteristical funktions of two (sub-)sets.
    After execution of the function M1 contains the characteristical function of both sets.

    Important: Both arrays should be dimensioned equally, because otherwise the result is only valid in the area of the smaller field.

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       Last changed: 21.10.2004
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