This is a session of my REPL julia> setrounding(BigFloat, RoundDown) MPFRRoundDown::MPFRRoundingMode = 3 julia> function f() println(big"0.3") end f (generic function with 1 method) julia> setrounding(BigFloat, RoundUp) MPFRRoundUp::MPFRRoundingMode = 2 julia> f() 0.299999999999999999…

setrounding is indeed global, if you want it set temporarily, use the form that takes a function so that the original setting will be restored. See Integers and Floating-Point Numbers · The Julia Language . Also, please quote your code. [image] Please read: make it easier to help y…

[image] Lucas_Queiroz: Here I make the following conclusion: what determines the rounding behaviour of a function is the rounding mode that was in play at the time the function was created. Changing the rounding mode at a later time doesn’t change the function’s behavior. A reasonable conclus…

Is setrounding an efficient way of controlling the roundiing behaviour? I am asking this because validated numerics is important to me , and I am writing code where I need rigourous bounds to the results of my numerical computations. I have written a function that takes two BigFloat numbers as inpu…

GitHub - JuliaIntervals/IntervalArithmetic.jl: Rigorous floating-point calculations using interval arithmetic in Julia might be a good place to start. It will be very efficient (although it might give slightly wide bounds due to using Floats)

I am going to read this package documentation, I feel it will help me a lot.

For the sake of completeness StochasticArithmetic.jl also provides directed rounding for basic operations on FP numbers (currently only Float32 and Float64). Disclaimer: I’m the author of this package and it has not been very thoroughly tested, nor has it been used much since I wrote it. If what you…

How does setrounding work?

New to Julia

Lucas_Queiroz June 8, 2020, 6:23pm 3

Thank you for directing me to your post, I will pay attention those advices.

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How does setrounding work?

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