refactoring math.hpp

Author: sakamoto-souta

packages/server/computation_container/math/math.hpp

@@ -1,8 +1,5 @@
 #pragma once
-#include <algorithm>
-#include <initializer_list>
-#include <iostream>
-#include <string>
+#include <numeric>
 #include <vector>
 
 #include "share/share.hpp"
@@ -12,9 +9,9 @@ namespace qmpc::Math
 using Share = qmpc::Share::Share<FixedPoint>;
 Share sum(const std::vector<Share> &v);
 Share smean(const std::vector<Share> &v);
-Share variance(std::vector<Share> &v);
-// 標準偏差
-FixedPoint stdev(std::vector<Share> &v);
-// 相関係数
-Share correl(std::vector<Share> &x, std::vector<Share> &y);
+std::vector<Share> deviation(std::vector<Share> v);
+Share variance(const std::vector<Share> &v);
+FixedPoint stdev(const std::vector<Share> &v);
+Share covariance(const std::vector<Share> &x, const std::vector<Share> &y);
+Share correl(const std::vector<Share> &x, const std::vector<Share> &y);
 }  // namespace qmpc::Math