public static MyBigNumber Sum2MyBigNumbers(MyBigNumber myNmbr1, MyBigNumber myNmbr2)
{
int smallerByAbs = MyBigNumber.SmallerByAbsIsFirstOrSecond(myNmbr1, myNmbr2);
MyBigNumber bgrByAbs, smlrByAbs;
int signOfBigger = 0;
if (smallerByAbs == 1)
{
smlrByAbs = myNmbr1;
bgrByAbs = myNmbr2;
signOfBigger = myNmbr2.SignNmbr;
}
else
{
smlrByAbs = myNmbr2;
bgrByAbs = myNmbr1;
signOfBigger = myNmbr1.SignNmbr;
}
string biggerAbsNmbrs = bgrByAbs.PartDigits;
string smallerAbsNmbrs = smlrByAbs.PartDigits;
int biggerAbsFlPos = bgrByAbs.FloatPointPosition;
int smallerAbsFlPos = smlrByAbs.FloatPointPosition;
int biggerFlPPos = 0;
if (biggerAbsFlPos > smallerAbsFlPos)
{
biggerFlPPos = biggerAbsFlPos;
smallerAbsNmbrs = MyBigNumber.AddNmbrZero(smallerAbsNmbrs, -1 * (biggerAbsFlPos - smallerAbsFlPos));
}
else
{
biggerFlPPos = smallerAbsFlPos;
biggerAbsNmbrs = MyBigNumber.AddNmbrZero(biggerAbsNmbrs, -1 * (smallerAbsFlPos - biggerAbsFlPos));
}
if (smallerAbsNmbrs.Length < biggerAbsNmbrs.Length)
{
smallerAbsNmbrs = MyBigNumber.AddNmbrZero(smallerAbsNmbrs, biggerAbsNmbrs.Length - smallerAbsNmbrs.Length);
}
string newStrPartDigits;
if ((myNmbr1.SignNmbr * myNmbr2.SignNmbr) >= 0)
{
newStrPartDigits = MyBigNumber.AddTwoLines(biggerAbsNmbrs, smallerAbsNmbrs);
}
else
{
newStrPartDigits = MyBigNumber.BiggerMinusSmaller(biggerAbsNmbrs, smallerAbsNmbrs);
}
var myNmbr3 = new MyBigNumber()
{
PartDigits = newStrPartDigits, SignNmbr = signOfBigger, FloatPointPosition = biggerFlPPos
};
string newStringVal = myNmbr3.Value();
return(MyBigNumber.CreateMyBigNumber(newStringVal));
}
public static MyBigNumber MultiplyBy(MyBigNumber myBigNumber, MyBigNumber myBigMultiplier)
{
string tmpNmbrString = myBigNumber.PartDigits;
string tmpMltplrString = myBigMultiplier.PartDigits;
var lstMtpldLines = new List <string>(tmpMltplrString.Length);
for (int i = tmpMltplrString.Length - 1; i >= 0; i--)
{
string line = MyBigNumber.MultiplyLineByChar(tmpNmbrString, tmpMltplrString[i]);
line = MyBigNumber.AddNmbrZero(line, (-1 * (tmpMltplrString.Length - 1 - i)));
lstMtpldLines.Add(line);
}
MyBigNumber.IndentLengthWithZeroes(lstMtpldLines);
string lineSum = lstMtpldLines[0];
for (int i = 1; i < lstMtpldLines.Count; i++)
{
string tmpLine = lstMtpldLines[i];
var lsAppend = new List <string>(2);
lsAppend.Add(lineSum);
lsAppend.Add(tmpLine);
MyBigNumber.IndentLengthWithZeroes(lsAppend);
lineSum = MyBigNumber.AddTwoLines(lsAppend[0], lsAppend[1]);
}
int pstnFloatPoint = myBigNumber.FloatPointPosition + myBigMultiplier.FloatPointPosition;
int nmbrLeadZeroes = pstnFloatPoint - lineSum.Length + 1;
if (nmbrLeadZeroes > 0)
{
lineSum = MyBigNumber.AddNmbrZero(lineSum, nmbrLeadZeroes);
}
int newSign = myBigMultiplier.SignNmbr * myBigNumber.SignNmbr;
var newMyNumber = new MyBigNumber()
{
PartDigits = lineSum, FloatPointPosition = pstnFloatPoint, SignNmbr = newSign
};
string resultValue = newMyNumber.Value();
var resMyNumber = MyBigNumber.CreateMyBigNumber(resultValue);
return(resMyNumber);
}
