protected void GeneratePrimes()
{
IIsPrime checker = new IsPrimeV7();
Stopwatch sw = new Stopwatch();
sw.Restart();
int number = int.MaxValue;
List <ulong> primeNumbers = new List <ulong>();
this.Primes[0] = false;
this.Primes[1] = false;
if (this.UseParallel)
{
int maxTestNumber = (int)Math.Sqrt(number) + 1;
Parallel.For(2, maxTestNumber, i =>
{
if ((this.Primes[i]) &&
(checker.CheckIsPrime((uint)i)))
{
for (int j = (i * 2); j <= number && j > 0; j = j + i)
{
this.Primes[j] = false;
}
}
});
primeNumbers.Sort();
}
else
{
int maxTestNumber = (int)Math.Sqrt(number) + 1;
for (int i = 2; i <= maxTestNumber; i++)
{
if ((this.Primes[i]) &&
(checker.CheckIsPrime((uint)i)))
{
for (int j = (i * 2); j <= number && j > 0; j = j + i)
{
this.Primes[j] = false;
}
}
}
}
this.Results = primeNumbers;
sw.Stop();
TIsPrimeV9M1.Logger.Info($"Prime Generation Took {Utilities.ElaspedTimeFormatter(sw)}");
}
/// <summary>
///
/// </summary>
protected void GeneratePrimes(ulong findPrimesTo)
{
if (findPrimesTo > (ulong)uint.MaxValue + 1)
{
throw new ArgumentOutOfRangeException("findPrimesTo");
}
IIsPrime checker = new IsPrimeV7();
Stopwatch sw = new Stopwatch();
sw.Restart();
long startNumber = (this.Primes.Count > 0 ? (long)this.Primes.Last() : 2);
ConcurrentBag <ulong> primeNumbers = new ConcurrentBag <ulong>();
if (this.UseParallel)
{
Parallel.For(startNumber, (long)findPrimesTo + 1, i =>
{
if (checker.CheckIsPrime((ulong)i))
{
primeNumbers.Add((ulong)i);
}
});
}
else
{
if (startNumber == 2)
{
primeNumbers.Add(2);
}
for (ulong i = (ulong)(startNumber % 2 == 0 ? startNumber + 1 : startNumber); i <= findPrimesTo; i = i + 2)
{
if (checker.CheckIsPrime(i))
{
primeNumbers.Add(i);
}
}
}
this.Primes.AddRange(primeNumbers.OrderBy(x => x));
sw.Stop();
IsPrimeV9.Logger.Info($"PrimeNumber Generation Took {Utilities.ElaspedTimeFormatter(sw)}");
}
