The existence of platforms that do not conform to their own specifications does not make an operator non-deterministic. Edit: I found this pretty great article

The existence of platforms that do not conform to their own specifications does not make an operator non-deterministic. Edit: I found this pretty great article on the subject https://randomascii.wordpress.com/2013/07/16/floating-point-determinism/ https://randomascii.wordpress.com/2013/07/16/floating-point-... We're both right, depending on how you frame the question.