delaunayn: adjust node ordering for positive outward normal vectors (bug #53397) * delaunayn.m: Check sign of simplex volume, flip node order for negative volumes to ensure positive (outward-pointing) normal vectors. Add BISTs to check for positive volumes. * etc/News.8.md: Append function improvement note to delaunayn change paragraph under General Improvements.

classdef bug58572
  methods
    function rslt = use_num (obj)
      rslt = cellfun (@isnumeric, {'a_name'});
    endfunction
    function rslt = isnumeric (obj)
      if (! isa (obj, 'bug58572'))
        error ('bug58572.isnumeric called without object!');
      endif
      rslt = true;
    endfunction
  endmethods
endclassdef