AsnReal

    class AsnReal(AsnBasicNode)
       This class stores the semantic content of an ASN.1 REAL.
       Members:
           _name : the name of the type (or var)
           _isOptional : if True, node is optional
           _range : a tuple containing the valid range for the integer or []
           _baseRange,
           _mantissaRange,
           _exponentRange  : single or double element tuples containing
                             the allowed ranges for respective values.
                             Or [].
           _dbDefaultValue : either None, or the default value for this real