% -*- texinfo -*-
% @deftypefn {Function File} {} exponential_cdf (@var{x}, @var{lambda})
% For each element of @var{x}, compute the cumulative distribution
% function (CDF) at @var{x} of the exponential distribution with
% parameter @var{lambda}.
%
% The arguments can be of common size or scalar.
% @end deftypefn