Sync public subset from Flux

include/numerics/matmax.h

@@ -0,0 +1,52 @@
+#pragma once
+
+#include "./utils/matrix.h"
+
+namespace numerics{
+	
+	template <typename T>
+	T matmax(const utils::Matrix<T>& A){
+
+		const uint64_t rows = A.rows();
+		const uint64_t cols = A.cols();
+
+		T max_value(T{0});
+
+		for (uint64_t i = 0; i < rows; ++i){
+			for (uint64_t j = 0; j < cols; ++j){
+				max_value = numerics::max(max_value, A(i,j));
+			}
+		}
+		return max_value;
+	}
+
+	template <typename T>
+	utils::Vector<T> matmax(const utils::Matrix<T>& A, std::string method){
+
+		utils::Vector<T> b;
+
+		if (method == "cols"){
+			b.resize(A.cols(), T{0});
+			for (uint64_t i = 0; i < A.cols(); ++i){
+				for (uint64_t j = 0; j < A.rows(); ++j){
+					b[i] = numerics::max(A(j, i), b[i]);
+				}
+			}
+		}else if (method == "rows"){
+			b.resize(A.rows(), T{0});
+			for (uint64_t i = 0; i < A.rows(); ++i){
+				for (uint64_t j = 0; j < A.cols(); ++j){
+					b[i] = numerics::max(A(i, j), b[i]);
+				}
+			}
+		}else{
+			throw std::runtime_error("max: choose 'rows or 'cols'");
+		}
+		return b;
+
+	}
+
+
+
+} // namespace numerics
+