/**

  * Created by My_coder on 2017-07-27.

  * 加减乘除计算工具类

  */

 public class BigDecimalUtil {

     private BigDecimalUtil() {

     }

     /**

      * 加

      */

     public static BigDecimal add(Double v1, Double v2){

         BigDecimal b1 = new BigDecimal(v1.toString());

         BigDecimal b2 = new BigDecimal(v2.toString());

         return b1.add(b2);

     }

     /**

      * 减

      */

     public static BigDecimal sub(Double v1, Double v2){

         BigDecimal b1 = new BigDecimal(v1.toString());

         BigDecimal b2 = new BigDecimal(v2.toString());

         return b1.subtract(b2);

     }

     /**

      * 乘

      */

     public static BigDecimal mul(Double v1, Double v2){

         BigDecimal b1 = new BigDecimal(v1.toString());

         BigDecimal b2 = new BigDecimal(v2.toString());

         return b1.multiply(b2);

     }

     /**

      * 除

      */

     public static BigDecimal div(Double v1, Double v2){

         BigDecimal b1 = new BigDecimal(v1.toString());

         BigDecimal b2 = new BigDecimal(v2.toString());

         //四舍五入，保留两位小数

         return b1.divide(b2,2,BigDecimal.ROUND_HALF_DOWN);

     }

 }