Bug 314203 Unnecessary round mode will cause number disappear
core/org.eclipse.birt.core/src/org/eclipse/birt/core/format/NumberFormatter.java
{
							String value = values.get( index ).trim( );
							if ( value.equalsIgnoreCase( "HALF_EVEN" ) )
								roundingMode = RoundingMode.HALF_EVEN;
							else if ( value.equalsIgnoreCase( "HALF_UP" ) )
								roundingMode = RoundingMode.HALF_UP;
							else if ( value.equalsIgnoreCase( "HALF_DOWN" ) )
								roundingMode = RoundingMode.HALF_DOWN;
							else if ( value.equalsIgnoreCase( "UP" ) )
								roundingMode = RoundingMode.UP;
							else if ( value.equalsIgnoreCase( "DOWN" ) )
								roundingMode = RoundingMode.DOWN;
							else if ( value.equalsIgnoreCase( "FLOOR" ) )
								roundingMode = RoundingMode.FLOOR;
							else if ( value.equalsIgnoreCase( "CEILING" ) )
								roundingMode = RoundingMode.CEILING;
							else if ( value.equalsIgnoreCase( "UNNECESSARY" ) )
								roundingMode = RoundingMode.UNNECESSARY;
						}
					}
					if ( begin == 0 )
						return null;
					return pattern.substring( 0, begin );
				}
			}
		}
		return pattern;
	}
	/**
	 * @param num