java 正确地将java中的两个小数位舍入到两位小数

Posted 2021-05-08

/* rounds a double to two decimals accurately */
private static double twoDecimals(double numberToTrim){
    boolean addOne = ((numberToTrim*100.0-(int)(numberToTrim*100.0)) >= 0.5);
    double output = ((int)(numberToTrim*100))/100.0;
    if(addOne){
        output+=0.1;
    }
    return output;
}