public BigNumber Log(int places)
{
BigNumber dst = new BigNumber();
BigNumber.Log(this, dst, places);
return(dst);
}
public BigNumber Log()
{
BigNumber dst = new BigNumber();
BigNumber.Log(this, dst, numDefaultPlaces);
return(dst);
}
static void Log10(BigNumber src, BigNumber dst, int places)
{
BigNumber tmp8 = new BigNumber();
BigNumber tmp9 = new BigNumber();
int dplaces = places + 4;
BigNumber.CheckLogPlaces(dplaces + 45);
BigNumber.Log(src, tmp9, dplaces);
BigNumber.Mul(tmp9, BN_lc_log10R, tmp8);
BigNumber.Round(tmp8, dst, places);
}
static public void Power(BigNumber xx, BigNumber yy, BigNumber rr, int places)
{
int iflag;
BigNumber tmp8 = new BigNumber();
BigNumber tmp9 = new BigNumber();
int M_size_flag = BigNumber.GetSizeofInt();
if (yy.signum == 0)
{
BigNumber.Copy(BigNumber.One, rr);
return;
}
if (xx.signum == 0)
{
BigNumber.SetZero(rr);
return;
}
if (BigNumber.IsInteger(yy) > 0)
{
iflag = 0;
if (M_size_flag == 2) /* 16 bit compilers */
{
if (yy.exponent <= 4)
{
iflag = 1;
}
}
else /* >= 32 bit compilers */
{
if (yy.exponent <= 7)
{
iflag = 1;
}
}
if (iflag > 0)
{
String sbuf = BigNumber.ToIntString(yy);
int Exp = Convert.ToInt32(sbuf);
BigNumber.IntPow(places, xx, Exp, rr);
return;
}
}
tmp8 = new BigNumber();
tmp9 = new BigNumber();
BigNumber.Log(xx, tmp9, (places + 8));
BigNumber.Mul(tmp9, yy, tmp8);
BigNumber.Exp(tmp8, rr, places);
}
public static void DoTest()
{
BigNumber A = 0, B = 0, C = 0;
BigNumber PI = new BigNumber();
// assignment by string
A = "12345";
Console.WriteLine("assigned value was: " + A.ToFullString() + "(" + A.ToString() + ")");
// assignment from hexadecimal string
A = "0xff";
Console.WriteLine("assigned value was: " + A.ToFullString() + "(" + A.ToString() + ")");
A = "0x1ff";
Console.WriteLine("assigned value was: " + A.ToFullString() + "(" + A.ToString() + ")");
A = "0x123456789";
Console.WriteLine("assigned value was: " + A.ToFullString() + "(" + A.ToString() + ")");
A = "0xFeDcBafedcba";
Console.WriteLine("assigned value was: " + A.ToFullString() + "(" + A.ToString() + ")");
// assignment from binary string
A = "%10001000";
Console.WriteLine("assigned value was: " + A.ToFullString() + "(" + A.ToString() + ")");
A = "%11011011100111000111000111100011010101010101";
Console.WriteLine("assigned value was: " + A.ToFullString() + "(" + A.ToString() + ")");
// assignment by double
A = 123.45;
B = 0.12345;
Console.WriteLine("assigned value was: " + A.ToFullString() + "(" + A.ToString() + ")");
// assignment by string in exponential form x = a*10^y. 10E3 = 10*10^^3 = 10000
A = "10E3"; // 10E3 = 10*10^3 = 10000
B = "1E4"; // 1E4 = 1*10^4 = 10000
C = 10000;
Console.WriteLine("assigned value was: " + A.ToFullString() + "(" + A.ToString() + ")");
Console.WriteLine("10000 = " + A.ToFullString() + " = " + B.ToFullString() + " = " + C.ToFullString());
A = 1; B = 2; C = 0;
C = A + B;
Console.WriteLine("the result of " + A.ToFullString() + "+" + B.ToFullString() + "=" + C.ToFullString());
// addition of BigNumber + double
C = A + 3.2;
// addition of double + BigNumber
C = 3.1 + B;
A = "5.141592"; B = "2.91827";
C = A - B;
Console.WriteLine("the result of " + A.ToFullString() + "-" + B.ToFullString() + "=" + C.ToFullString());
C = A * B;
Console.WriteLine("the result of " + A.ToFullString() + "*" + B.ToFullString() + "=" + C.ToFullString());
A = 5.0; B = 3.0;
C = A * B;
Console.WriteLine("the result of " + A.ToFullString() + "*" + B.ToFullString() + "=" + C.ToFullString());
A = 4; B = 0.5;
C = A.Pow(B);
Console.WriteLine("the result of " + A.ToFullString() + " pow " + B.ToFullString() + "=" + C.ToFullString());
A = 0.5; B = "5E-1";
C = A.Pow(B, 16);
Console.WriteLine("the result of " + A.ToFullString() + " pow " + B.ToFullString() + "=" + C.ToFullString());
A = "1e3"; // "10E2"; // "1E3 = 1000";
C = A.Log10();
Console.WriteLine("the result of " + A.ToFullString() + " Log10 =" + C.ToFullString());
A = "10E3"; B = "1E4"; C = 10000;
A = BigNumber.BN_E;
C = A.Log();
Console.WriteLine("the result of " + A.ToString() + " Log =" + C.ToFullString());
A = 3.0;
C = A.Rez();
Console.WriteLine("the result of " + A.ToString() + " Rez =" + C.ToFullString());
int NumPlaces = 4;
A = 1.53456;
C = A.Round(NumPlaces);
Console.WriteLine("the result of " + A.ToString() + " Round(" + NumPlaces + ") =" + C.ToFullString());
NumPlaces = 2;
C = A.Round(NumPlaces);
Console.WriteLine("the result of " + A.ToString() + " Round(" + NumPlaces + ") =" + C.ToFullString());
NumPlaces = 0;
C = A.Round(NumPlaces);
Console.WriteLine("the result of " + A.ToString() + " Round(" + NumPlaces + ") =" + C.ToFullString());
NumPlaces = 16;
A = 2.0;
C = A.Sqrt(NumPlaces);
Console.WriteLine("the result of " + A.ToString() + " Sqrt(" + NumPlaces + ") =" + C.ToFullString());
A = 1.0; B = 0;
try
{
C = A / B;
}
catch (BigNumberException ex)
{
Console.WriteLine("Exception in operation: " + ex.Message);
}
A = 1.0;
for (int i = 1; i <= 1000; i++)
{
A = A * i;
}
Console.WriteLine("the result of 1000!=" + A.ToFullString());
A = A.Round(numDefaultPlaces);
Console.WriteLine("the result of 1000!=" + A.ToString());
DateTime before = DateTime.Now;
NumPlaces = 5000;
CalculatePiAGM(PI, NumPlaces);
TimeSpan ts = DateTime.Now - before;
Console.WriteLine("time for " + NumPlaces + " digits of PI: " + ts.TotalMilliseconds + "[ms]");
Console.WriteLine(PI.ToFullString());
Console.WriteLine("Press 'x' key to quit test");
//while (true)
//{
// ConsoleKeyInfo i = Console.ReadKey();
// if (i.KeyChar == 'x') break;
//}
}