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     The memcpy and _fmemcpy functions copy <count> bytes of <src> to
     <dest>. If some regions of <src> and <dest> overlap, these
     functions do not ensure that the original <src> bytes in the
     overlapping region are copied before being overwritten. Use
     memmove to handle overlapping regions.
 
     The _fmemcpy function is a model-independent (large model) form of
     the memcpy function and can be called from any point in the
     program.
 
     There is a semantic difference between the function version of
     memcpy and its intrinsic version. The function version supports
     huge pointers in compact-, large-, and huge-model programs, but
     the intrinsic version does not.
 
     Return Value
 
     The memcpy and _fmemcpy functions return a pointer to <dest>.
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