NAME
        CopyMem - general purpose memory copy function

   SYNOPSIS
        CopyMem( source, dest, size )
                 A0      A1    D0

        void CopyMem(APTR,aptr,ulong);

   FUNCTION
        CopyMem is a general purpose, fast memory copy function.  It can
        deal with arbitrary lengths, with its pointers on arbitrary
        alignments.  It attempts to optimize larger copies with more
        efficient copies, it uses byte copies for small moves, parts of
        larger copies, or the entire copy if the source and destination are
        misaligned with respect to each other.

        Arbitrary overlapping copies are not supported.

        The internal implementation of this function will change from
        system to system, and may be implemented via hardware DMA.

   INPUTS
        source - a pointer to the source data region
        dest  - a pointer to the destination data region
        size  - the size (in bytes) of the memory area.  Zero copies
                zero bytes

   SEE ALSO
        copymemquick()