ad_setup does the initial setup for package autodiffr.
ad_setup(JULIA_HOME = NULL, reverse = TRUE, forward = TRUE, verbose = TRUE, ...)
| JULIA_HOME | the file folder which contains julia binary, if not set, it will try to look at global option JULIA_HOME, if the global option is not set, it will then look at the environmental variable JULIA_HOME, if still not found, julia in path will be used. | 
|---|---|
| reverse | whether to use load reverse mode automatic differentiation. | 
| forward | whether to use forward mode automatic differentiation. | 
| verbose | whether to print package startup messages. | 
| ... | arguments passed to  | 
# NOT RUN { ad_setup() # }