/// <summary>
/// PBNumber multiplication
/// </summary>
/// <param name="leftOperand"></param>
/// <param name="rightOperand"></param>
/// <returns></returns>
public static PBNumber pMUL(PBNumber leftOperand, PBNumber rightOperand)
{
PBNumber result = new PBNumber("0", IPBNumber.NumberCapacity.PB128, IPBNumber.RoundingType.POST_BINARY);
PBNumber[] alignedExponent = exponentsAlign((PBNumber)leftOperand.Clone(), (PBNumber)rightOperand.Clone());
PBNumber opA = alignedExponent[0];
PBNumber opB = alignedExponent[1];
result.Exponent = tADD(leftOperand.Exponent, rightOperand.Exponent, false);
result.Mantissa = pMUL_mantissa(leftOperand.Mantissa, rightOperand.Mantissa);
result.Sign = tXOR(leftOperand.Sign, rightOperand.Sign);
return result;
}
/// <summary>
/// </summary>
/// <param name="leftOperand"></param>
/// <param name="rightOperand"></param>
/// <returns></returns>
//TODO: add exponent align
public PBNumber pAND(PBNumber leftOperand, PBNumber rightOperand)
{
PBNumber opA = (PBNumber)leftOperand.Clone();
PBNumber opB = (PBNumber)rightOperand.Clone();
String result = "";
for (int i = 0; i < 10; i++)//change 10 to Mantissa lenght
{
switch (opA.Mantissa[i])
{
case '0':
{
result += '0';
break;
}
case '1':
{
result += '1';
break;
}
case 'A':
{
switch (opB.Mantissa[i])
{
case '0':
{
result += '0';
break;
}
case '1':
{
result += 'A';
break;
}
case 'A':
{
result += 'A';
break;
}
case 'M':
{
result += 'M';
break;
}
}
break;
}
case 'M':
{
switch (opB.Mantissa[i])
{
case '0':
{
result += '0';
break;
}
case '1':
{
result += 'M';
break;
}
case 'A':
{
result += 'M';
break;
}
case 'M':
{
result += 'M';
break;
}
}
break;
}
}
}
return null;
}
/// <summary>
/// Postbinary numeric addition
/// </summary>
/// <param name="leftOperand">Left operand of operation.</param>
/// <param name="rightOperand">Right operand of operation.</param>
/// <returns>Result of operation</returns>
private PBNumber ADD(PBNumber leftOperand, PBNumber rightOperand)
{
PBNumber opA = (PBNumber)leftOperand.Clone();
PBNumber opB = (PBNumber)rightOperand.Clone();
PBNumber opC = new PBNumber("0", IPBNumber.NumberCapacity.PB128, IPBNumber.RoundingType.POST_BINARY);
String iuA = "";
String iuB = "";
switch (tCMP(opA.Exponent, opB.Exponent)) // Exponent align
{
case 1:
opB = ExponentAlign(opA, opB);
// log here A, B
iuA = "1";
iuB = "";
break;
case -1:
opA = ExponentAlign(opB, opA);
// log here A, B
iuA = "";
iuB = "1";
break;
case 0:
default:
// log here A, B
break;
}
PBConvertion pbconvertion = new PBConvertion();
int a = Int32.Parse(pbconvertion.convert2to10IPart(opA.Exponent));
String str = tADD(iuA + opA.Mantissa, iuB + opB.Mantissa, false);
int iuPosition = str.IndexOf('1');
a -= iuPosition;
str = str.Substring(iuPosition);
opC.Mantissa = str.Substring(1);
opC.Exponent = pbconvertion.convert10to2IPart(a.ToString());
// log here C
return opC;
}
