exponential operation

Hi all,

  1. Is there an exponential operation in bro to do something like a**b, the built in exp(k) calculate e to the power of k.
  2. Is there something like python range(1, 10) in bro?
  3. how to initialize the size of a vector, in python e.g. [0 for i in range(5)], is there a similar approach in bro?
    I cannot find these in the bro documentation.