小编Ken*_*ihe的帖子

我有以下代码...

            ran_int = rand(); //check READ ME Citation B
            if (input == 32){
                //rand() with 2^31 as lower limit and 2^32 as its upper
                long long int upper_limit = 4294967295;
                long long int lower_limit = 2147483649
                ran_32_64 = (rand() * 2) % (upper_limit - lower_limit);
                ran_32_64 += lower_limit;
            }
            else if(input == 64){
                //rand() x 4 with 2^63 as lower limit and 2^64 as its upper
                unsigned long long int upper_limit = powl(2, 64);
                long long int lower_limit = powl(2, …