import  Decimal from "decimal.js"

// 封装加法函数
function add(num1, num2) {
    const decimal1 = new Decimal(num1===null?0:num1);
    const decimal2 = new Decimal(num2===null?0:num2);
    return decimal1.plus(decimal2).toString();
}

// 封装减法函数
function subtract(num1, num2) {
    const decimal1 = new Decimal(num1===null?0:num1);
    const decimal2 = new Decimal(num2===null?0:num2);
    return decimal1.minus(decimal2).toFixed(2);
}

// 封装乘法函数
function multiply(num1, num2) {
    const decimal1 = new Decimal(num1===null?0:num1);
    const decimal2 = new Decimal(num2===null?0:num2);
    return decimal1.times(decimal2).toFixed(2)
}

// 封装除法函数
function divide(num1, num2) {
    const decimal1 = new Decimal(num1===null?0:num1);
    const decimal2 = new Decimal(num2===null?0:num2);
    return decimal1.dividedBy(decimal2).toFixed(2);
}
export {
    add,
    subtract,
    multiply,
    divide

}