type Fixed has no field value

[SteffenPL]

There seems to be a small typo in jacobian.jl and hessian.jl

map(arg -> arg isa Fixed ?
arg.value : tag(arg, ctx, one(TermCombination)), args)...)

since Fixed has only a field val. Either the type Fixed or these lines have to be changed.

[ChrisRackauckas]

@shashi does that thumbs up mean that the fix is easy?

[SteffenPL]

In my case, just renaming makes it work.
I was a bit confused about how to implement the tests. That's why I didn't send a pull request yet.

SteffenPL@1c24bbe

[shashi]

Yeah I think @SteffenPL's diagnosis is correct.

Test could be just be jacobian_sparisty(f, y,x, Fixed(z)) and f(x,y,z) = z > 0 ? y .= x : y .= reverse(x)

The sparsity depends on the value of z here and it's always a diagonal (either a identity or a reversed diagonal)

If Fixed did not work, then the sparsity would come from both branches making it more like an "X" (crossed diagonals)