## In the .h

__attribute__((always_inline))
static int tuv(int x) {
        int s = 0, i;
        for (i = 0; i < x; ++ i)
                s += i*i;
        return s;
}

## In the .c

int main () {
        int s = 0;
        s += tuv(13);
        s += tuv(55);
        s += tuv(129);
        s += tuv(33);
        s += 2;
        return s;
}