...
NUM06-EX0: This rule applies only to calculations that require consistent floating-point results on all platforms. Applications that lack this requirement need not comply.
NUM06-EX1: The strictfp
modifier may be omitted when suitable numerical analysis demonstrates that the computed values meet all accuracy and behavioral requirements appropriate to the application.
Risk Assessment
Failure to use the strictfp
modifier can result in nonportable, implementation-defined behavior with respect to the behavior of floating-point operations.
...