Bug 314203 Unnecessary round mode will cause number disappear
core/org.eclipse.birt.core/src/org/eclipse/birt/core/format/NumberFormatter.java
num = roundValue( num );
			return numberFormat.format( num );
		}
		catch ( Exception e )
		{
			logger.log( Level.WARNING, e.getMessage( ), e ); 
			return null;
		}
	}
	/**
	 * format(BigDecimal) method, return the format string for the BigDecimal
	 * parameter.
	 */
	/**
	 * formats a BigDecimal value into a string
	 * 
	 * @param big
	 *            decimal value
	 * @return formatted string
	 */
	public String format( BigDecimal bigDecimal )
	{
		try
		{
			if ( hexFlag == true )
			{
				return Long.toHexString( bigDecimal.longValue( ) );
			}
			if ( this.formatPattern == null )