|   | Section 8.2: |  | 
This section of the required library contains definitions of those abstractions and classes which define objects as bit-patterns only. No semantics other than pattern equality testing are defined for these classes.
Abstract Classes
Immutable Classes
| NOTE | Should an implementation provide exact number classes which are implemented using more than the minimum of 32 bits specified in Section 4, the implementer is encouraged to define a new class called, say, NUM_BITS on which storage manipulations of the number of bits in a numeric class can be effected. | 
Reference Classes
|   | Language Index |   | Required Library Index | 
| Comments or enquiries should be made to Keith
        Hopper. Page last modified: Wednesday, 22 November 2000. |   |