public static BigInteger GetPrimeCount(BigInteger minval, BigInteger maxval)
{
BigInteger count;
if (maxval < minval)
{
throw new Exception("maxval < minval");
}
if (minval < Consts.BI2P64)
{
if (maxval < Consts.BI2P64)
{
count = Prime53.GetPrimeCount(Common.ToULong(minval), Common.ToULong(maxval), () => Ground.IsStopped() == false);
}
else
{
count = Prime53.GetPrimeCount(Common.ToULong(minval), ulong.MaxValue, () => Ground.IsStopped() == false);
count += GetPrimeCount_BIBI(Consts.BI2P64, maxval, rate => 0.5 + rate * 0.5);
}
}
else
{
count = GetPrimeCount_BIBI(minval, maxval, rate => rate);
}
return(count);
}
