Sync public subset from Flux

include/numerics/matexp.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "./utils/matrix.h"
+
+namespace numerics{
+	
+
+	template <typename T>
+	utils::Matrix<T>  matexp(const utils::Matrix<T>& A){
+		utils::Matrix<T> B = A;
+		for (uint64_t i = 0; i < A.rows(); ++i){
+			for (uint64_t j = 0; j < A.cols(); ++j){
+				B(i,j) = numerics::exp(A(i,j));
+			}
+		}
+		return B;
+	}
+
+
+
+} // namespace numerics
+