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26 lines
336 B

void *memcpy(void *s1, const void *s2, size_t n)
{
const char *f = s2;
char *t = s1;
if (f < t) {
f += n;
t += n;
while (n-- > 0)
*--t = *--f;
} else
while (n-- > 0)
*t++ = *f++;
return s1;
}
static void * memset(void * s,int c, size_t count)
{
char *xs = (char *) s;
while (count--)
*xs++ = c;
return s;
}