BinaryRepresentationOfFloat

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

namespace _09.BinaryRepresentationOfFloat
{
    class BinaryRepresentationOfFloat
    {
        private static char SignDefine(ref float number)
        {
            char sign;
            if (number >= 0)
            {
                sign = '0';
            }
            else
            {
                sign = '1';
            }
            number = Math.Abs(number);
            return sign;
        }

        static string DecimalToByteBinary(int decimalNumber)
        {
            string result = "";
            while (decimalNumber > 0)
            {
                result = (decimalNumber % 2).ToString() + result;
                decimalNumber /= 2;
            }
            string addZeros = new string('0', 8 - result.Length);
            result = addZeros + result;
            return result;
        }

        private static string ExponentDefine(ref float number)
        {
            string exponent;
            int decExponent = 0;
            while ((number < 1 || number > 2) && number != 0)
            {
                if (number < 1)
                {
                    number *= 2;
                    decExponent--;
                }
                else
                {
                    number /= 2;
                    decExponent++;
                }
            }
            number--;
            exponent = DecimalToByteBinary(127 + decExponent);
            return exponent;
        }

        private static string MantissaDefine(float number)
        {
            float bitValue = 0.5f;
            string mantissa = "";
            for (int i = 0; i < 23; i++)
            {
                if (number - bitValue >= 0)
                {
                    mantissa += '1';
                    number = number - bitValue;
                }
                else
                {
                    mantissa += '0';
                }
                bitValue /= 2;
            }
            return mantissa;
        }

        static void FloatInBinary(float number, out char sign, out string exponent, out string mantissa)
        {
            sign = SignDefine(ref number);
            exponent = ExponentDefine(ref number);
            mantissa = MantissaDefine(number);
        }

        static void Main(string[] args)
        {
            float number = -27.25f;
            Console.WriteLine("Number: {0}",number);
            char sign;
            string exponent;
            string mantissa;
            FloatInBinary(number, out sign, out exponent, out mantissa);
            Console.WriteLine("Sign: {0}",sign);
            Console.WriteLine("Exponent: {0}",exponent);
            Console.WriteLine("Mantissa: {0}",mantissa);
        }
    }
}