@dotstdy @mcc @hikari we went to some length to avoid this in Apple's math.h, so you get a fast inline test when __FINITE_MATH_ONLY__ == 0 and a mandatory function call if you turn on fast-math. This still can't catch everything.

@steve @mcc @hikari Another fun case is when you generate nans with fast math, but don't without. Feels very Congrats, You Played Yourself.

@dotstdy @steve @mcc @hikari
people seriously use fast math?!

@Doomed_Daniel @steve @mcc @hikari well probably associative-math would get most of the buck without so much of the bang, but where's the fun in that.

@dotstdy @Doomed_Daniel @mcc @hikari associative-math and no-signed-zeros generally get you most of the benefits