Bug? shuffle() breaks normalisation test

[Tamas_Papp]

@dcastel

Is that something that has to be done in general in Julia? Replace all == with ≈ ?

I am not sure that is a good idea, those functions serve a different purpose. And of course ≈ is not transitive.

@dcastel

Are there some guidelines/reading material about when too and when not to use it.

The underlying issue is floating point, so maybe this is helpful:

PSA: floating-point arithmetic

Sometimes people are surprised by the results of floating-point calculations such as julia> 5/6 0.8333333333333334 # shouldn't the last digit be 3? julia> 2.6 - 0.7 - 1.9 2.220446049250313e-16 # shouldn't the answer be 0? These are not bugs in Julia. They’re consequences of the IEEE-standard 64-bit binary representation of floating-point numbers that is burned into computer hardware, which Julia and many other languages use by default. Brief explanation You can t…

@dcastel

Is there also an infix notation for isapprox() ?

≈