//, PBNumber inObjectNumber
/// <summary>
/// Calculates Exponent for specified number
/// Uses : Number.BinaryIntPart,Number.BinaryFloatPart
/// </summary>
/// <param name="inNumber">Number - var from which exponenta need to be taken</param>
/// <param name="Left_Right">False - Left part og number, else - Right </param>
/// <returns>Returns Exponent in 2cc</returns>
private void selectExp(IFPartsOfNumber inStingNumber, IPBNumber.NumberCapacity inCapacity, IPBNumber.NumberFormat inNumberFormat)
{
int z = 0;
int Offset = 0;
String temp, result = "";
String bynaryStringInt = "", bynaryStringFloat = "";
bynaryStringInt = inStingNumber.IntegerPart;
bynaryStringFloat = inStingNumber.FloatPart;
try
{
Offset = (int)pbConvertion.getNumberOffset(inCapacity);
if (bynaryStringInt.IndexOf('1') != -1)
{
temp = bynaryStringInt;
temp = temp.TrimStart('0');
z = temp.Length - (temp.IndexOf('1') + 1);
if (z > Offset)
z = Offset;
}
else
if (bynaryStringFloat.IndexOf('1') != -1)
{
temp = bynaryStringFloat;
temp = temp.TrimEnd('0');
z = (temp.IndexOf('1') + 1);
z *= -1;
if (z < -Offset)
z = -Offset;
}
else
{
z = -Offset;
}
result = pbConvertion.convert10to2IPart((z + Offset).ToString());
this.Exponent = result;
}
catch (Exception ex)
{
throw new PBFunctionException("Exception in Func ['selectExp'] Mess=[" + ex.Message + "]");
}
}
// PBNumber inObjectNumber,
/// <summary>
/// Calculates Mantissa for specified number. Define Exponent before Mantissa for correct running algorithm.
/// Uses funcs: isStringZero,convert10to2IPart, checkStringFull, sumExp
/// Uses Vars: Number.BinaryIntPart,Number.BinaryFloatPart
/// </summary>
/// <param name="inNumber">Number - var from which mantissa need to be taken</param>
/// <param name="Left_Right">False - Left part og number, else - Right </param>
/// <returns>Returns Mantissa in 2cc</returns>
private void selectMantissa(IFPartsOfNumber inStringNumber, IPBNumber.NumberCapacity inCapacity, IPBNumber.NumberFormat inNumberFormat, IPBNumber.RoundingType inRoundingType)
{
int i, l = 0;
int currMBits;
String result = "";
String[] tempArray;
int offsetDot = 1;
String bynaryStringInt = "", bynaryStringFloat = "";
if (inNumberFormat == 0)
{
bynaryStringInt = inStringNumber.IntegerPart;
bynaryStringFloat = inStringNumber.FloatPart;
}
try
{
if ((bynaryStringInt != null) && (bynaryStringFloat != null))
{
if ((bynaryStringInt != "") && (bynaryStringFloat != ""))
{
if (bynaryStringInt.IndexOf('1') != -1)
{
offsetDot = bynaryStringInt.IndexOf('1');
result = bynaryStringInt.Substring(offsetDot + 1) + bynaryStringFloat;
}
else
if (bynaryStringFloat.IndexOf('1') != -1)
if (pbConvertion.isStringZero(Exponent))
result = "" + bynaryStringFloat.Substring((int)pbConvertion.getNumberOffset(inCapacity) - 1, (int)pbConvertion.getNumberMantissaLength(inCapacity) + 1);
else
{
offsetDot = bynaryStringFloat.IndexOf('1') + 1;
result = "" + bynaryStringFloat.Substring(offsetDot);
}
else
{
currMBits = (int)pbConvertion.getNumberMantissaLength(inCapacity);
tempArray = new String[currMBits];
for (i = 0; i < currMBits; i++)
tempArray[i] = "0";
result = result + String.Join("", tempArray);
}
}
else
{
throw new PBArithmeticException("Exception in Func ['selectMantissa'] Mess=[ Empty String - BynaryIntPart or BynaryFloatPart ] ( PB" + inCapacity + "=" + inStringNumber.ToString() + ")");
}
}
else
{
throw new PBArithmeticException("Exception in Func ['selectMantissa'] Mess=[ Null - BynaryIntPart or BynaryFloatPart ] ( PB" + inCapacity + "=" + inStringNumber.ToString() + ")");
}
currMBits = (int)pbConvertion.getNumberMantissaLength(inCapacity);
if (result.Length <= (int)currMBits)
{
// After Research Modification HERE NEEDED !
l = currMBits + 1 - result.Length;
tempArray = new String[l];
for (i = 0; i < l; i++)
{
tempArray[i] = "0";
}
result = result + String.Join("", tempArray);
}
Round(inRoundingType, result, currMBits, inStringNumber, offsetDot, inCapacity);
}
catch (Exception ex)
{
throw new PBFunctionException("Exception in Func ['selectMantissa'] Mess=[" + ex.Message + "]");
}
}
public void Round(IPBNumber.RoundingType inRoundingType, String result, int currMBits, IFPartsOfNumber inStringNumber, int offsetDot, IPBNumber.NumberCapacity inCapacity)
{
String M = "";
switch (inRoundingType)
{
case IPBNumber.RoundingType.ZERO: // to ZERO
M = result.Substring(0, currMBits);
break;
case IPBNumber.RoundingType.NEAR_INTEGER:// to INTEGER
if (pbConvertion.isStringZero(Exponent))
{
String[] tempArray = new String[offsetDot];
for (int i = 0; i < offsetDot; i++)
tempArray[i] = "0";
M = M + String.Join("", tempArray);
M += result.Substring(0, currMBits + 1 - offsetDot);
}
else
M = result.Substring(0, currMBits + 0);
if ((result[currMBits] == '1') && (inStringNumber.Sign[0] == '+'))
{
if (!pbConvertion.checkStringFull(M))
{
M = pbConvertion.convert2to10IPart(M);
M = pbConvertion.Addition(M, "1");
}
else
{
M = "0";
if (!pbConvertion.checkStringFull(Exponent))
{
pbConvertion.sumExp(Exponent, "1", inCapacity);
}
}
M = pbConvertion.convert10to2IPart(M);
if (M.Length + 1 == currMBits)
{
M = "0" + M;
}
else
if (M.Length < currMBits)
{
int l = currMBits - M.Length;
String[] tempArray = new String[l];
for (int i = 0; i < l; i++)
tempArray[i] = "0";
M = String.Join("", tempArray) + M;
}
}
break;
case IPBNumber.RoundingType.POSITIVE_INFINITY:// +Inf
M = result.Substring(0, currMBits);
if (inStringNumber.Sign[0] == '0')
{
if (!pbConvertion.checkStringFull(M))
{
M = pbConvertion.convert2to10IPart(M);
M = pbConvertion.Addition(M, "1");
}
else
{
M = "0";
if (!pbConvertion.checkStringFull(Exponent))
{
pbConvertion.sumExp(Exponent, "1", inCapacity);
}
}
M = pbConvertion.convert10to2IPart(M);
}
break;
case IPBNumber.RoundingType.NEGATIVE_INFINITY:
// -Inf
M = result.Substring(0, currMBits);
if (inStringNumber.Sign[0] == '1')
{
if (!pbConvertion.checkStringFull(M))
{
M = pbConvertion.convert2to10IPart(M);
M = pbConvertion.Addition(M, "1");
}
else
{
M = "0";
if (!pbConvertion.checkStringFull(Exponent))
{
pbConvertion.sumExp(Exponent, "1", inCapacity);
}
}
M = pbConvertion.convert10to2IPart(M);
}
break;
case IPBNumber.RoundingType.POST_BINARY:
if (result.Length >= currMBits)
{
M = result.Substring(0, currMBits);
}
else
{
M = result;
while (M.Length < currMBits)
{
M = "0" + M;
}
}
if (result.Length >= currMBits + 2)
{
String nonSignificantBits = result.Substring(currMBits, 2);
if ((nonSignificantBits == "01") || (nonSignificantBits == "10"))
{
int lastZero = M.LastIndexOf('0');
if (lastZero == -1)
{
if (nonSignificantBits == "10")
{
M = pbConvertion.getEmptyMantissa(inCapacity).ToString();
//TODO: Create function for addition in binary, and delete next 3th lines of code
String tempExponent = pbConvertion.convert2to10IPart(this.Exponent);//
tempExponent = pbConvertion.Addition(tempExponent, "1"); // ADD 1 to Exponent
this.Exponent = pbConvertion.convert10to2IPart(tempExponent); //
}
}
else
{
//TODO: Control here
M = M.Substring(0, lastZero) + "M";
while (M.Length < currMBits)
{
M += "A";
}
}
}else
if (nonSignificantBits == "11")
{
if (M.LastIndexOf('0')!=-1)
{
M = pbConvertion.convert10to2IPart( pbConvertion.Addition(pbConvertion.convert2to10IPart(M), "1") );
}else
{
Round(IPBNumber.RoundingType.NEAR_INTEGER, result, currMBits, inStringNumber, offsetDot, inCapacity);
}
}
}
break;
}
this.Mantissa = M;
}