These trees calculate the logarithm and exponential, and the division (reciprocation) process can be described by 1/A=e/sup -ln/A/. For bit skip accuracy of six to 10, this logarithmic-exponential ...

Stephen R. Wassell, Superexponentiation and Fixed Points of Exponential and Logarithmic Functions, Mathematics Magazine, Vol. 73, No. 2 (Apr., 2000), pp. 111-119 ...