bug of Overfloat2

[yang-tp]

Dear authors：
When I try to use this code to have a test, I found if i set the array size above 40000000(4000W) the program will exit with error of Overfloat2. (I install the code with python3 in windons)
I have check the source code and find the array design with long long type .
my test code is :
MyBloomFilter=(5000*10000,error_rate=1e-10)