takes a decimal value, and truncates all the decimals after the total Decimal specified. - CSharp System

CSharp examples for System:Math Number

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Description

takes a decimal value, and truncates all the decimals after the total Decimal specified.

Demo Code

/* *******************************************************************************
 * Copyright (c) 2005-2012 Zibler S de RL MI.
 * /*from  w w w  . jav  a 2 s . c o m*/
 * This file is part of Zibler.
 * 
 * Zibler is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Zibler is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Zibler.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * *******************************************************************************/
using System.Threading;
using System.Text;
using System.Security.Cryptography;
using System;

public class Main{
        /// <summary>
        /// This function takes a decimal value, and truncates all the decimals
        /// after the totalDecimal specified. So if totalDecimal is 2, then 
        /// all decimals after the second decimal of number will be truncated.
        /// all decimals after the second decimal of number will be truncated.
        /// </summary>
        /// <param name="number">Number to truncate</param>
        /// <param name="totalDecimal">Total decimals to truncate</param>
        /// <returns></returns>
        public static decimal TruncateDecimalPlaces (decimal number, int totalDecimal)
        {
            int decBase = 10;

            if (totalDecimal > 10)
                return 0.0m;
            
            int multiplier = decBase * totalDecimal;

            /* Get the integer part of the decimal */
            decimal intPortion = Decimal.Truncate (number);

            /* Get only the decimal part */
            decimal decimalPortion = number - intPortion;

            /* Multiply the decimal portion to the multiplier to create 
            * an integer number equivalent to the decimals we want to keep */
            decimal decToKeep = decimalPortion * multiplier;

            /* Truncate to keep only the integer part */
            decToKeep = Decimal.Truncate (decToKeep);

            /* Divide the integer part of the decimals to keep by
            * the multiplier, to convert back to decimals */
            if (multiplier > 0)
                decToKeep = decToKeep / multiplier;
            else
                decToKeep = 0;

            /* Add the integer portion of the original value to the
            * decimals to keep to generate a result */
            decimal result = intPortion + decToKeep;

            return result;
        }
}

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