Get Decimal Places : double « Data Types « C# / C Sharp

Get Decimal Places

   

#region License
// Copyright (c) 2007 James Newton-King
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Collections.Generic;
using System.Text;

namespace Newtonsoft.Json.Utilities
{
  internal class MathUtils
  {

    public static int GetDecimalPlaces(double value)
    {
      // increasing max decimal places above 10 produces weirdness
      int maxDecimalPlaces = 10;
      double threshold = Math.Pow(0.1d, maxDecimalPlaces);

      if (value == 0.0)
        return 0;
      int decimalPlaces = 0;
      while (value - Math.Floor(value) > threshold && decimalPlaces < maxDecimalPlaces)
      {
        value *= 10.0;
        decimalPlaces++;
      }
      return decimalPlaces;
    }    
  }
}

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2.	the differences between int and double
3.	Implement the Pythagorean Theorem
4.	Talking to Mars: double value calculation
5.	converts Fahrenheit to Celsius
6.	Epsilon, PositiveInfinity, NegativeInfinity, MaxValue, MinValue
7.	double number format: 0:C, 0:D9, 0:E, 0:F3, 0:N, 0:X, 0:x
8.	Format double value
9.	Automatic conversion from double to string
10.	An int, a short, a float, and a double are added together giving a double result.
11.	Test to see if a double is a finite number (is not NaN or Infinity).
12.	Double.Epsilon Field represents the smallest positive Double value that is greater than zero.
13.	Availible Double Range
14.	Truncates the specified double.
15.	Is Nearly Equal
16.	Shifts the given value into the range

Get Decimal Places : double « Data Types « C# / C Sharp

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