Maxima Function
cdf_lognormal (x,m,s)
Returns the value at x of the distribution function of a Lognormal(m,s) random variable, with s>0. This function is defined in terms of Maxima's built-in error function erf.
erf
(%i1) load (distrib)$ (%i2) assume(x>0, s>0)$ cdf_lognormal(x,m,s); log(x) - m erf(----------) sqrt(2) s 1 (%o3) --------------- + - 2 2
See also .