Inside a project I have been working in, I detected an anomaly when I make comparisons between two floats numbers. I have reproduced this error in a very basic loop just to show the problem in a simple way : clearconsole() list_temp = [0.40,0.30,0.20,0.10] acc = 0 for number in list_temp acc =…

Use ≈ (\approx) for floating point number comparisons.

[image] PSA: floating-point arithmetic Offtopic 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 2.2204460492503…

And if you use \approx, check the documentation for the tolerances you want to use.

Note the ability to provide an absolute tolerance atol, a relative tolerance rtol or both. The default relative tolerance is often good but be aware that zero is only approximately equal to itself with the defaults.

Float comparison error

General Usage

John_Gibson June 19, 2018, 11:34am 3

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Float comparison error

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