Function geohashDecode

src/Functions/GeoHash.cpp:246–263

}

void geohashDecode(const char * encoded_string, size_t encoded_len, Float64 * longitude, Float64 * latitude)
{
    const uint8_t precision = static_cast<uint8_t>(std::min(encoded_len, MAX_PRECISION));
    if (precision == 0)
    {
        // Empty string is converted to (0, 0)
        *longitude = 0;
        *latitude = 0;
        return;
    }

    Encoded lat_encoded;
    Encoded lon_encoded;
    std::tie(lon_encoded, lat_encoded) = split(base32Decode(encoded_string, precision), precision);

    *longitude = decodeCoordinate(lon_encoded, LON_MIN, LON_MAX, singleCoordBitsPrecision(precision, LONGITUDE));
    *latitude = decodeCoordinate(lat_encoded, LAT_MIN, LAT_MAX, singleCoordBitsPrecision(precision, LATITUDE));
}

GeohashesInBoxPreparedArgs geohashesInBoxPrepare(
    Float64 longitude_min,