using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace YLErp.Helpers
{
    public static class CalculateHelper
    {
        /// <summary>
        /// 计算复利的函数
        /// </summary>
        /// <param name="principal">本金</param>
        /// <param name="rate">年利率</param>
        /// <param name="time">投资时间（天）</param>
        /// <returns>复利总额</returns>
        public static double CompoundInterest(double principal, double rate, int time,int annualDays=365)
        {
            double dailyRate = rate / (double)annualDays;
            // 计算复利公式中的指数部分
            double exponent = dailyRate * time;
            // 利用指数函数计算复利总额
            double total = principal * Math.Pow(1 + exponent, time / (double)annualDays);
            // 计算复利总额（保留两位小数）
            return Math.Round(total, 2);
        }
    }
}