Casting parameters as float64 silencing tf warnings

[MatteoRobbiati]

Checklist:

• Reviewers confirm new code works as expected.
• Tests are passing.
• Coverage does not decrease.
• Documentation is updated.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.81%. Comparing base (81c173b) to head (e119b8c).
Report is 6 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1308   +/-   ##
=======================================
  Coverage   99.81%   99.81%           
=======================================
  Files          72       72           
  Lines       10520    10522    +2     
=======================================
+ Hits        10501    10503    +2     
  Misses         19       19           

Flag	Coverage Δ
unittests	99.81% <100.00%> (+<0.01%)	⬆️

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