PyUtils: Fix handling of NaN in fprint.

Fix formatting of nan/inf in fprint() functions.

This merge request affects 1 package:

• Tools/PyUtils

added Tools master review-pending-level-1 labels

CI Result SUCCESS (hash 5f934a47)

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 7078]

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 06e80878

added sweep:ignore label