public void SmallLargeCompareWithClassic()
{
IntX x = new IntX(GetAllOneDigits(50000), false);
IntX y = new IntX(GetAllOneDigits(512), false);
IntX classic = IntX.Multiply(x, y, MultiplyMode.Classic);
IntX fht = IntX.Multiply(x, y, MultiplyMode.AutoFht);
Assert.IsTrue(classic == fht);
}
public static Object Solve()
{
var diameter = FibonacciSequence.ItemsX.Take(1000).Sum();
var x = IntX.Multiply(diameter, 314159265359, MultiplyMode.Classic);
var y = IntX.Divide(x, 100000000000, DivideMode.Classic);
return(y);
}
public static DecimalX Calculate(int numberOfDigitsRequired)
{
int max = numberOfDigitsRequired + 8; // To be safe, compute 8 extra digits, to be dropped at end. The 8 is arbitrary
var a = IntX.Multiply(InverseTan(5, max), new IntX(16), MultiplyMode.AutoFht); //16 x arctan(1/5)
var b = IntX.Multiply(InverseTan(239, max), new IntX(4), MultiplyMode.AutoFht); //4 x arctan(1/239)
IntX pi = a - b;
return(new DecimalX(
IntX.Divide(pi, IntX.Pow(10, (uint)8), DivideMode.AutoNewton)
, IntX.Pow(10, (uint)numberOfDigitsRequired, MultiplyMode.AutoFht)));
}
private static IntX GetTenToPowerOfNumberOfDigitsRequired(int numberOfDigitsRequired)
{
var tenToNumberOfDigitsRequired = new IntX(1);
// The following loop computes 10^numberOfDigitsRequired
for (var i = 0; i < numberOfDigitsRequired; i++)
{
tenToNumberOfDigitsRequired = IntX.Multiply(tenToNumberOfDigitsRequired, new IntX(10), MultiplyMode.AutoFht);
}
return(tenToNumberOfDigitsRequired);
}
public void CompareWithClassicRandom()
{
TestHelper.Repeat(
RandomRepeatCount,
delegate
{
IntX x = new IntX(GetRandomDigits(), false);
IntX classic = IntX.Multiply(x, x, MultiplyMode.Classic);
IntX fht = IntX.Multiply(x, x, MultiplyMode.AutoFht);
Assert.IsTrue(classic == fht);
});
}
public void CompareWithClassic()
{
TestHelper.Repeat(
RepeatCount,
delegate
{
IntX x = new IntX(GetAllOneDigits(_length), true);
IntX classic = IntX.Multiply(x, x, MultiplyMode.Classic);
IntX fht = IntX.Multiply(x, x, MultiplyMode.AutoFht);
Assert.IsTrue(classic == fht);
_length += LengthIncrement;
});
}
public void Multiply128BitNumbers()
{
IntX int1 = new IntX(new uint[] { 47668, 58687, 223234234, 42424242 }, false);
IntX int2 = new IntX(new uint[] { 5674356, 34656476, 45667, 678645646 }, false);
Stopwatch stopwatch = Stopwatch.StartNew();
TestHelper.Repeat(
100000,
delegate
{
IntX.Multiply(int1, int2, MultiplyMode.Classic);
}
);
stopwatch.Stop();
Console.WriteLine(stopwatch.ElapsedMilliseconds);
}
