banan-os/libc/string/memmove.c

21 lines
351 B
C
Raw Normal View History

#include <string.h>
void* memmove(void* destp, const void* srcp, size_t n)
{
unsigned char* dest = (unsigned char*)destp;
const unsigned char* src = (const unsigned char*)srcp;
if (dest < src)
{
for (size_t i = 0; i < n; i++)
dest[i] = src[i];
}
else
{
for (size_t i = 1; i <= n; i++)
dest[n - i] = src[n - i];
}
return destp;
}