Task

Calculate the value of   e.



(e   is also known as   Euler's number   and   Napier's constant.)



See details: Calculating the value of e

   NB. rational one half times pi to the first power
            NB. pi to the power of negative two
                      NB. two oh in base 111
                                   NB. complex number length 1, angle in degrees 180
   1r2p1    1p_2      111b20       1ad270
1.5708 0.101321 222 0j_1
