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#include <string.h>
volatile void *memmovev(volatile void *dest, const volatile void *src, size_t n)
{
volatile char *d = dest;
volatile const char *s = src;
if (d == s)
return d;
if (d < s) {
for (; n; n--)
*d++ = *s++;
} else {
while (n)
n--, d[n] = s[n];
}
return dest;
}
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