data = (
{
  class = "mpdf_harness";
  mpdf = {
    class = "mlnorm<ldmat>";
    A = ( "matrix", 2, 2, [ 1.0, 0.0, 0.0, 1.0 ] );
    const = [ 0, 0 ];
    R = ( "matrix", 2, 2, [ 1.2, 0.3, 0.3, 5.0 ] );
  };
  cond = [ 1.5, 1.7 ];
  mean = [ 1.5, 1.7 ];
  R = ( "matrix", 2, 2, [ 1.26402, 0.378231, 0.378231, 5.15925 ] );
  tolerance = 0.4;
} );