/// <summary>
/// This method add the two values given by user (this, other)
/// </summary>
/// <param name="other">Second value to Add</param>
/// <returns>Add object</returns>
public override Number Calculate(Number num1, Number num2)
{
char[] a = num1.GetNumber(num1).ToCharArray();
char[] b = num2.GetNumber(num2).ToCharArray();
bool flag = false;
int len = a.Length > b.Length ? a.Length : b.Length; // maximum length
if (num2 is null || this is null || a.Length == 0 || b.Length == 0)
{
num2.AssignInputValue("");
return(num2);
}
if ((num1.GetNumber(num1) == num2.GetNumber(num2)) && (num1.GetSign(num1) || num2.GetSign(num2)))
{
num2.AssignInputValue("0", false);
return(num2);
}
string result = "";
int s = 0;
int i = a.Length - 1, j = b.Length - 1;
while (i >= 0 || j >= 0 || s == 1)
{
s += ((i >= 0) ? a[i] - '0' : 0);
s += ((j >= 0) ? b[j] - '0' : 0);
result = (char)(s % 2 + '0') + result;
s /= 2;
i--; j--;
}
//this is for when both are signed
if (num1.GetSign(num1) && num2.GetSign(num2))
{
num2.AssignInputValue(result, true);
return(num2);
}
//To know which number is greater
if (b.Length > a.Length)
{
flag = true;
}
else if (b.Length == a.Length)
{
for (int x = 0; x < a.Length; x++)
{
if (a[x] < b[x])
{
flag = true;
break;
}
else
{
flag = false;
break;
}
}
}
else
{
flag = false;
}
//this is for when one is signed and the other isn't.
if ((num1.GetSign(num1) && !num2.GetSign(num2)) || (!num1.GetSign(num1) && num2.GetSign(num2)))
{
Number c1 = new Binary(num1.GetNumber(num1));
Number c2 = new Binary(num2.GetNumber(num2));
Operation sp = new SubOperation();
Number res = sp.Calculate(c1, c2);
if (flag)
{
if (num1.GetSign(num1) && !num2.GetSign(num2))
{
return(new Binary(res.GetNumber(res), false));
}
else
{
return(new Binary(res.GetNumber(res), true));
}
}
else
{
if (!num1.GetSign(num1) && num2.GetSign(num2))
{
return(res);
}
else
{
return(new Binary(res.GetNumber(res), true));
}
}
}
if (!num1.GetSign(num1) && num2.GetSign(num2))
{
Number c1 = new Binary(num1.GetNumber(num1));
Number c2 = new Binary(num2.GetNumber(num2));
Operation sp = new SubOperation();
Number res = sp.Calculate(c1, c2);
return(res);
}
string p = new string(result);
num2.AssignInputValue(p);
return(num2);
}
/// <summary>
/// This method divides the two values given by user (this, other)
/// </summary>
/// <param name="other">Second value to divide</param>
/// <returns>Divide object</returns>
public override Number Calculate(Number num1, Number num2)
{
char[] a = num1.GetNumber(num1).ToCharArray();
char[] b = num2.GetNumber(num2).ToCharArray();
bool flag1 = true, flag2 = true;
int t = 0, countZeros = 0;
//Null object or empty array checking
if (num2 is null || this is null || a.Length == 0 || b.Length == 0)
{
throw new ArgumentNullException();
/*num2.AssignInputValue("");
* return num2;*/
}
//Can't divide by zero
for (int z = 0; z < b.Length; z++)
{
if (b[z] == '0')
{
countZeros++;
}
}
if (countZeros == b.Length)
{
throw new DivideByZeroException();
}
//Example for 2/7, return 0
if (a.Length < b.Length)
{
Console.Write("0");
return(new Binary("0"));
}
else
{
if (a.Length == b.Length)
{
for (int i = 0; i < a.Length; i++)
{
if (a[i] < b[i])
{
flag1 = false;
break;
}
}
}
//E.g, 5/7, return 0
if (!flag1)
{
Console.Write("0");
return(new Binary("0"));
}
char[] c = new char[a.Length];
string q1_first = "0", q = "";
//if a.length > b.length e.g., a= 1010101 b = 100, then create new array and add zeros in the beginning.
if (a.Length > b.Length)
{
for (int i = 0; i < a.Length - b.Length; i++)
{
c[i] = '0';
}
for (int i = a.Length - b.Length; i < a.Length; i++)
{
c[i] = b[t];
t++;
}
}
else
{
for (int i = 0; i < b.Length; i++)
{
c[i] = b[i];
}
}
string s1 = new string(a);
string s2 = new string(c);
while (flag2)
{
Number n1 = new Binary(s1);
Number n2 = new Binary(s2);
Operation op = new SubOperation();
Number rem = op.Calculate(n1, n2);
s1 = rem.GetNumber(rem);
Number q1 = new Binary(q1_first);
Number q2 = new Binary("1");
Operation op1 = new AddOperation();
Number quot = op1.Calculate(q1, q2);
q1_first = quot.GetNumber(quot);
char[] p1 = rem.GetNumber(rem).ToCharArray();
char[] p2 = s2.ToCharArray();
//check if num1 is greater than num2
for (int i = 0; i < a.Length; i++)
{
if (p1[i] > p2[i])
{
flag2 = true;
break;
}
else if (p1[i] < p2[i])
{
flag2 = false;
break;
}
}
q = quot.GetNumber(quot);
}
Console.Write(q);
if (((!num1.GetSign(num1) && !num2.GetSign(num2)) || (num1.GetSign(num1) && num2.GetSign(num2))) || (q == "0"))
{
return(new Binary(q));
}
else
{
return(new Binary(q, true));
}
}
}
