memmove - copy memory area
void *memmove(void *dest, const void *src, size_t n);
The memmove() function copies n bytes from memory area src
to memory area dest. The memory areas may overlap: copying takes place
as though the bytes in src are first copied into a temporary array that
does not overlap src or dest, and the bytes are then copied from
the temporary array to dest.
The memmove() function returns a pointer to dest.
For an explanation of the terms used in this section, see attributes(7).
POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD.
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