My goal is to insert my float variable in the database.
But when I call the addField method and cast the float into double, the variable gets a weird noise (little supplement) at the end:

This code:

float value = 3.141592f
influxdb::Point p1{"cpu"};
p1.addField("value", (double) value);
std::cout << p1.getFields() << std::endl;

displays this output:

value=3.141592025756835938

As you can see, a few digits are added at the end of the value, not far from the last digit.

I also tried casting with static_cast<double>(value) but it didn't work (same if I pass the float as is, without casting).

Edit:
To sum up, I'd like to know if it's possible to have as much precision as if I inserted a double:

value=3.141592000000000162

NB: with such a value, InfluxDB ignores the 162 at the end, and give me the tuple when I do a query with WHERE value=3.141592 (which is not the case with the float result).