NAME
        SumLibrary -- compute and check the checksum on a library

   SYNOPSIS
        SumLibrary(library)
                   A1

        void SumLibrary(struct library *);

   FUNCTION
        SumLibrary computes a new checksum on a library.  It can also be
        used to check an old checksum.  If an old checksum does not match,
        and the library has not been marked as changed, then the system
        will call alert().

        This call could also be periodically made by some future
        system-checking task.

   INPUTS
        library - a pointer to the library to be changed

   NOTE
        An alert will occur if the checksum fails.

   SEE ALSO
        setfunction()