problems with IntervalArithmetic in MacBook Pro with Apple M3 Max chip

[justinmccrary]

Hi everybody.
I'm experienced in econometrics, but new to Julia (and GitHub) and still learning about package management.

THE PROBLEM:
I'm using Julia version 1.11.2 and have been trying to install IntervalArithmetic. My computing environment is a MacBook Pro with an Apple M3 Max chip.

THE STUFF THAT SEEMS TO WORK OK:
The sequence

using Pkg; Pkg.add("IntervalArithmetic")

seems to works fine. For example,

Pkg.status("IntervalArithmetic")

shows

Status ~/.julia/environments/v1.11/Project.toml
⌅ [d1acc4aa] IntervalArithmetic v0.17.8

which I think just is saying that there might be a more recent version of IntervalArithmetic out there. (I installed everything today, so I'm not quite sure how that might be true, but maybe that is where my error lies?)

THE STUFF THAT SEEMS TO BREAK:
However, issuing

a = @interval(1, 2)

leads to the frightening error

[96649] signal 11 (2): Segmentation fault: 11
in expression starting at none:0

followed by many other errors and finally

[1] 96648 segmentation fault sudo julia

QUESTION:
Does anybody know what I might be doing wrong? Apologies if this is answered somewhere already--I looked for much of today and couldn't find any relevant posts.

Thank you!

[dpsanders]

That's an ancient version - we're up to 0.22 now.
There's probably something wrong with version bounds somewhere, thanks for the report.

[justinmccrary]

Thank you for this catch! I really appreciate the response.

I forced Julia to update with this:

Pkg.add(PackageSpec(name="IntervalArithmetic", version="0.22.20"))

which seems to work. (For example,
Pkg.status()
confirms
[d1acc4aa] IntervalArithmetic v0.22.20
). However, while this fixes the segmentation fault, it does not seem to fully work--the command

using IntervalArithmetic
a = @interval(1, 2)

still produces the error below:

ERROR: MethodError: no method matching atomic(::Int64, ::Int64)
The function atomic exists, but no method is defined for this combination of argument types.

Any idea what is going on?

[Kolaru]

Status ~/.julia/environments/v1.11/Project.toml
⌅ [d1acc4aa] IntervalArithmetic v0.17.8

The ⌅ symbol means that another installed package prevent IntervalArithmetic from getting the latest version, and that was the initial problem (I see you solved that in the meantime).

using IntervalArithmetic a = @interval(1, 2)

still produces the error below:

The function you are looking for is probably interval (without @), which is expected to give the following:

julia> interval(1, 2)
[1.0, 2.0]_com

@interval is instead used to replace numbers with intervals in an expression. The docstrings give a bit more details:

julia> ? @interval
  @interval(expr)
  @interval(T, expr)
  @interval(T, expr1, expr2)

  Walk through an expression and wrap each argument of functions with the internal
  constructor atomic.

  Examples
  ≡≡≡≡≡≡≡≡

  julia> setdisplay(:full);

  julia> @macroexpand @interval sin(1) # Float64 is the default bound type
  :(sin(IntervalArithmetic.atomic(Float64, 1)))

  julia> @macroexpand @interval Float32 sin(1)
  :(sin(IntervalArithmetic.atomic(Float32, 1)))

  julia> @interval Float64 sin(1) exp(1)
  Interval{Float64}(0.8414709848078965, 2.7182818284590455, com)

[justinmccrary]

@Kolaru thank you so much!!! This was in fact exactly the issue. Installation was just fine, it was my "hello world" that was the problem. :)

[Kolaru]

Happy to help! Feel free to open a new issue if something is unclear in the documentation or if you hit another problem.