Add user-defined function names to a global list of custom vectorized functions.
The functions in vecfun_names are intended for use inside the node formulas.
Adding functions to this list will generally greatly expedite the simulation run time.
Any node formula calling a function on this list will be evaluated "as is", the function should
be written to accept arguments as either vectors of length n or as matrices with n rows.
Adding function to this list will effects simulation from all DAG objects that call this function. See vignette for more details.
vecfun.add(vecfun_names)An old vector of user-defined vectorized function names
A character vector of function names that will be treated as "vectorized" by the node formula R parser