The Error Function (also called the Gauss error function) is a special
function of sigmoid shape which occurs in probability, statistics and partial differential equations. It is used in the
calculation of mcatd.normal() and mctad.lognormal().
The implementation of the erf uses Abramowitz and Stegun's approximation
7.1.28, which in turn comes from
C. Hastings, Jr., Approximations for Digital Computers, Princeton University Press, NJ, 1955.
Error Function
The Error Function (also called the Gauss error function) is a special function of sigmoid shape which occurs in probability, statistics and partial differential equations. It is used in the calculation of
mcatd.normal()andmctad.lognormal().The implementation of the erf uses Abramowitz and Stegun's approximation 7.1.28, which in turn comes from C. Hastings, Jr., Approximations for Digital Computers, Princeton University Press, NJ, 1955.