% -*- texinfo -*-
% @deftypefn {Function File} {} f_rnd (@var{m}, @var{n}, @var{r}, @var{c})
% @deftypefnx {Function File} {} f_rnd (@var{m}, @var{n}, @var{sz})
% Return an @var{r} by @var{c} matrix of random samples from the F
% distribution with @var{m} and @var{n} degrees of freedom. Both
% @var{m} and @var{n} must be scalar or of size @var{r} by @var{c}.
% If @var{sz} is a vector the random samples are in a matrix of
% size @var{sz}.
%
% If @var{r} and @var{c} are omitted, the size of the result matrix is
% the common size of @var{m} and @var{n}.
% @end deftypefn