% -*- texinfo -*-
% @deftypefn {Function File} {} lognormal_cdf (@var{x}, @var{a}, @var{v})
% For each element of @var{x}, compute the cumulative distribution
% function (CDF) at @var{x} of the lognormal distribution with
% parameters @var{a} and @var{v}. If a random variable follows this
% distribution, its logarithm is normally distributed with mean
% @code{log (@var{a})} and variance @var{v}.
%
% Default values are @var{a} = 1, @var{v} = 1.
% @end deftypefn