function 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
}
function accMul(arg1, arg2) {
    var m = 0,
        s1 = arg1.toString(),
        s2 = arg2.toString()
    try {
        m += s1.split('.')[1].length
    } catch (e) {
        /* empty */
    }
    try {
        m += s2.split('.')[1].length
    } catch (e) {
        /* empty */
    }
    return (Number(s1.replace('.', '')) * Number(s2.replace('.', ''))) / Math.pow(10, m)
}
//除法
function 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) {}

    r1 = Number(arg1.toString().replace('.', ''))
    r2 = Number(arg2.toString().replace('.', ''))
    return accMul(r1 / r2, Math.pow(10, t2 - t1))
}

export { accAdd, accMul, accDiv }