using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace HH.WMS.Utils
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{
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public class ZMath
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{
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public static decimal calcRound(decimal adTargetVal, int anDigits)
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{
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double dbTargetVal = Convert.ToDouble(adTargetVal);
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double decReturn = calcRound(dbTargetVal, anDigits);
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return Convert.ToDecimal(decReturn);
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}
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/// <summary>
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/// 四舍五入处理
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/// </summary>
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/// <param name="adTargetVal">处理对象值</param>
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/// <param name="anDigits">处理对象位数(负数时直接去位数)</param>
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/// <returns>处理结果数值</returns>
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public static double calcRound(double adTargetVal, int anDigits)
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{
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double dRet = adTargetVal;
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try
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{
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// 先转换成整数再进行计算
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dRet = dRet * System.Math.Pow(10, (double)anDigits);
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// 四舍五入处理
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dRet = dRet + (0.5 * System.Math.Sign(dRet));
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if (dRet >= 0)
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{
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dRet = System.Math.Floor(dRet);
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}
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else
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{
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dRet = System.Math.Ceiling(dRet);
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}
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// 还原回小数
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dRet = dRet / System.Math.Pow(10, (double)anDigits);
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}
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catch
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{
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dRet = 0;
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}
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return dRet;
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}
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/// <summary>
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/// 小数上进一处理
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/// </summary>
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/// <param name="adTargetVal">处理对象值</param>
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/// <param name="anDigits">处理对象位数(负数时直接去尾数)</param>
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/// <returns>处理结果数值</returns>
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public static double calcRoundUp(double adTargetVal, int anDigits)
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{
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double dRet = adTargetVal;
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try
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{
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// 先转换成整数再进行计算
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dRet = dRet * System.Math.Pow(10, (double)anDigits);
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// 小数上进一
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if (dRet >= 0)
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{
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dRet = System.Math.Ceiling(dRet);
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}
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else
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{
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dRet = System.Math.Floor(dRet); // 负数直接去尾数取整
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}
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// 还原回小数
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dRet = dRet / System.Math.Pow(10, (double)anDigits);
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}
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catch
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{
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dRet = 0;
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}
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return dRet;
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}
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/// <summary>
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/// 小数直接舍去处理
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/// </summary>
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/// <param name="adTargetVal">处理对象值</param>
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/// <param name="anDigits">处理对象位数(负数时要上进一取整)</param>
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/// <returns>处理结果数值</returns>
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public static double calcRoundDown(double adTargetVal, int anDigits)
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{
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double dRet = adTargetVal;
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try
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{
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// 先转换成整数再进行计算
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dRet = dRet * System.Math.Pow(10, (double)anDigits);
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// 直接去尾数取整
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if (dRet >= 0)
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{
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dRet = System.Math.Floor(dRet);
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}
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else
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{
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dRet = System.Math.Ceiling(dRet); // 负数要上进一取整
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}
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// 还原回小数
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dRet = dRet / System.Math.Pow(10, (double)anDigits);
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}
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catch
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{
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dRet = 0;
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}
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return dRet;
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}
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}
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}
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