libc.info: memcpy

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`memcpy'--copy memory regions

*Synopsis*
     #include <string.h>
     void* memcpy(void *OUT, const void *IN, size_t N);
   *Description*
This function copies N bytes from the memory region pointed to by IN to
the memory region pointed to by OUT.
   If the regions overlap, the behavior is undefined.
*Returns*
`memcpy' returns a pointer to the first byte of the OUT region.
*Portability*
`memcpy' is ANSI C.
   `memcpy' requires no supporting OS subroutines.