int32_t floor_divide(int32_t a, int32_t b) {
    if (b < 0 && a < 0) {
        return -a / -b;
    } else if (a >= 0 && b >= 0) {
        return a / b;
    } else if (a < 0) {
        return (-((-(a) - 1) / (b))) - 1;
    } else if (a != 0) {
        return (-(((a) - 1) / -(b))) - 1;
    }
    return 0;
}