Function normalize_dir

libop/image/ImageSearchAlgorithms.cpp:332–334

    return 0;
}
static int normalize_dir(int dir) {
    return dir >= 0 && dir <= 8 ? dir : 0;
}

static long long center_distance2(const point_t &p, const rect_t &range) {
    const long long center2x = static_cast<long long>(range.x1) + range.x2 - 1;