Fix numpy dtype warnings
This MR fixes few warnings related to numpy 1.20.
It is maybe better to select a better type, like float32/64. The default will be 64 here.
I though this was already fixed in the master.
This MR fixes few warnings related to numpy 1.20.
It is maybe better to select a better type, like float32/64. The default will be 64 here.
I though this was already fixed in the master.