public static int GetPrime(int min)
{
if (min < 0)
{
throw new ArgumentException();
}
System.Diagnostics.Contracts.Contract.EndContractBlock();
for (int i = 0; i < HashHelpers.primes.Length; i++)
{
int prime = HashHelpers.primes[i];
if (prime >= min)
{
return(prime);
}
}
//outside of our predefined table.
//compute the hard way.
for (int i = (min | 1); i < Int32.MaxValue; i += 2)
{
if (HashHelpers.IsPrime(i) && ((i - 1) % HashHelpers.HashPrime != 0))
{
return(i);
}
}
return(min);
}
internal static int GetPrime(int min)
{
if (min < 0)
{
throw new FMException("prime value is zero!");
}
for (int i = 0; i < HashHelpers.primes.Length; i++)
{
int num = HashHelpers.primes[i];
if (num >= min)
{
return(num);
}
}
for (int j = min | 1; j < 2147483647; j += 2)
{
if (HashHelpers.IsPrime(j))
{
return(j);
}
}
return(min);
}