// Constructor
public static IEnumerable <ulong> Get()
{
var pg = PrimegenStruct.Create();
primegen_init(ref pg);
while (true)
{
yield return(primegen_next(ref pg));
}
}
private static extern ulong primegen_next(ref PrimegenStruct pg);
private static extern void primegen_init(ref PrimegenStruct pg);