// 加法

const accAdd = (arg1, arg2) => {

    var r1, r2, m;

    try {

        r1 = arg1.toString().split(".")[1].length;

    }

    catch (e) {

        r1 = 0;

    }

    try {

        r2 = arg2.toString().split(".")[1].length;

    }

    catch (e) {

        r2 = 0;

    }

    m = Math.pow(10, Math.max(r1, r2));

    return (arg1 * m + arg2 * m) / m;

}

// 减法

const subtr = (arg1, arg2) => {

    var r1, r2, m, n;

    try {

        r1 = arg1.toString().split(".")[1].length;

    }

    catch (e) {

        r1 = 0;

    }

    try {

        r2 = arg2.toString().split(".")[1].length;

    }

    catch (e) {

        r2 = 0;

    }

    m = Math.pow(10, Math.max(r1, r2));

     //last modify by deeka

     //动态控制精度长度

    n = (r1 >= r2) ? r1 : r2;

    return ((arg1 * m - arg2 * m) / m).toFixed(n);

}

// 乘法获取准确值

const accMul = (arg1,arg2) => {

    var m=0,s1=arg1.toString(),s2=arg2.toString();

    try{m+=s1.split(".")[1].length}catch(e){}

    try{m+=s2.split(".")[1].length}catch(e){}

    return Number(s1.replace(".",""))*Number(s2.replace(".",""))/Math.pow(10,m)

}

// 除法获取精确值

const accDiv = (arg1, arg2) => {

    var t1 = 0, t2 = 0, r1, r2;

    try { t1 = arg1.toString().split(".")[1].length } catch (e) { }

    try { t2 = arg2.toString().split(".")[1].length } catch (e) { }

    Math.r1 = Number(arg1.toString().replace(".", ""))

    Math.r2 = Number(arg2.toString().replace(".", ""))

    return (Math.r1 / Math.r2) * Math.pow(10, t2 - t1);

}

export { accAdd, subtr, accMul, accDiv }