% -*- texinfo -*-
% @deftypefn {Function File} {} is_leap_year (@var{year})
% Return 1 if the given year is a leap year and 0 otherwise. If no
% arguments are provided, @code{is_leap_year} will use the current year.
% For example,
%
% @example
% @group
% is_leap_year (2000)
% @result{} 1
% @end group
% @end example
% @end deftypefn