The size of float is no diff between double

[jarek0209]

I used double in protobuf , now I want to reduce the size of data, so I change it to float, but the size is no change
Is riegeli compression double data well than float?

[QrczakMK]

double should take more space than float. Even with compression, it is expected to take more space, although perhaps not that much more than without compression.

Is the file size exactly the same, or is there some small difference?