Function geohashesInBox

src/Functions/GeoHash.cpp:322–355

}

UInt64 geohashesInBox(const GeohashesInBoxPreparedArgs & args, char * out)
{
    if (args.precision == 0
        || args.precision > MAX_PRECISION
        || args.longitude_step <= 0
        || args.latitude_step <= 0)
    {
        return 0;
    }

    UInt64 items = 0;
    for (size_t i = 0; i < args.longitude_items; ++i)
    {
        for (size_t j = 0; j < args.latitude_items; ++j)
        {
            size_t length = geohashEncodeImpl(
                args.longitude_min + args.longitude_step * static_cast<Float64>(i),
                args.latitude_min + args.latitude_step * static_cast<Float64>(j),
                args.precision,
                out);

            out += length;
            ++items;
        }
    }

    if (items == 0)
    {
        geohashEncodeImpl(args.longitude_min, args.latitude_min, args.precision, out);
        ++items;
    }

    return items;
}

}