//
//  frequency_monobit.cpp
//  rng
//
//  Created by Asher Falcon on 21/06/2025.
//

#include "../rng.h"
#include "./rngtest.h"

namespace splat {
    class frequency_monobit_test : public RNGTEST {
        public: 
        frequency_monobit_test(std::vector<std::bitset<32>> &testData) : RNGTEST(testData) {
            testPValue = runTest(data);
            testPassed = testPValue > 0.01;
        }
        std::string getName() override {
            return "Frequency Monobit";
        }
        double runTest(std::vector<std::bitset<32>> &data) override {
            long long s = 0;
            for(auto bitset : data){
                for(int i=0; i<32; i++){
                    s += (2*bitset[i])-1;
                }
            }
            double sobs = ((double)std::abs(s))/std::sqrt(data.size()*32);
            double pvalue = std::erfc(sobs/std::sqrt(2));
            return pvalue;
        }
    };
}