void invert(float* inverse, const float* src)
{
    int i, j, k, swap;
    float tmp[4][4];

    for (i = 0; i < 4; i++) {
        for (j = i + 1; j < 4; j++) {
            if (tmp[j][i] > tmp[i][i]) {
                swap = j;
            }
        }

        if (swap != i) {
                tmp[i][k] = tmp[swap][k];
        }
    }
}