Skip the exponent function

[ChrisRackauckas]

It is a Base function that returns a scalar.

https://github.com/SciML/DiffEqBase.jl/blame/master/src/internal_itp.jl#L46

https://github.com/SciML/OrdinaryDiffEq.jl/actions/runs/14272335727/job/40008186966?pr=2662#step:6:1251

@oscardssmith

[ChrisRackauckas]

The test seems to already be generated from the function list.

[devmotion]

Looks good to me, it's also consistent with ForwardDiff: https://github.com/JuliaDiff/ForwardDiff.jl/blob/f00147ebd3615497b24bafb71c1f037857ca9408/src/dual.jl#L339 cat tests are failing (not broken anymore) on more recent Julia versions (someone should check what was changed when upstream to correctly mark them as not broken anymore...), otherwise tests pass on master. CI confirms that it is tested: https://github.com/JuliaDiff/ReverseDiff.jl/actions/runs/14282119048/job/40032870650?pr=273#step:6:321

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.47%. Comparing base (90f1516) to head (72fa521).
Report is 3 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #273   +/-   ##
=======================================
  Coverage   82.47%   82.47%           
=======================================
  Files          18       18           
  Lines        1586     1586           
=======================================
  Hits         1308     1308           
  Misses        278      278           

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[ChrisRackauckas]

Confirmed https://github.com/JuliaDiff/ReverseDiff.jl/actions/runs/14282119048/job/40032870650?pr=273#step:6:321