Error while velocity datatype is ReverseDiff.TrackedReal{Float64,Float64,Nothing}

[efmanu]

Hi,
If the data type of velocity is ReverseDiff.TrackedReal{Float64,Float64,Nothing}, I am getting error at line 38 of core.jl. The error is like below:

ERROR: MethodError: no method matching Int64(::ReverseDiff.TrackedReal{Float64,Float64,Nothing})
Closest candidates are:
  Int64(::T) where T<:Number at boot.jl:718
  Int64(::Union{Bool, Int32, Int64, UInt32, UInt64, UInt8, Int128, Int16, Int8, UInt128, UInt16}) at boot.jl:710
  Int64(::Ptr) at boot.jl:720
  ...
Stacktrace:
 [1] (::VoxelRayTracers.var"#2#4")(::ReverseDiff.TrackedReal{Float64,Float64,Nothing}) at C:\Users\manoos\.julia\packages\VoxelRayTracers\cUSqe\src\core.jl:38

I temporarly solved this problem by replacing Int(sign(v)) in line 38 of /src/core.jl with v > 0 ? 1 : -1 . Do you have any better suggestions? Moreover, can you update this package by solving the problem?

[jw3126]

Thanks for reporting. It would be nice if this package worked better with AD. A PR with your suggested change would be welcome!

[efmanu]

sure