Bug 212371 [Regression] Auto-scale does not work correctly and gridline is not shown anymore when run the attached java file [13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/AutoScale.java
if ( dStep > 1 )
								{
									dStep = Math.round( dStep );
								}
							}
							else
							{
								dPower *= 20;
								dStep = iaLinearDeltas[0] * dPower;
								if ( dStep > 1 )
								{
									dStep = Math.round( dStep );
								}
							}
							break;
						}
					}
					if ( i == n )
					{
						throw new RuntimeException( new ChartException( ChartEnginePlugin.ID,
								ChartException.COMPUTATION,
								"exception.step.zoom.out", 
								new Object[]{
									new Double( dStep )
								},
								Messages.getResourceBundle( rtc.getULocale( ) ) ) );
					}
					if ( ( (Number) oStep ).doubleValue( ) == dStep )
					{