ready for parralization

include/numerics/transpose.h

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+#ifndef _transpose_n_
+#define _transpose_n_
+
+
+#include "./utils/matrix.h"
+
+
+namespace numerics{
+	
+	template <typename T>
+	void inplace_transpose(utils::Matrix<T>& A){
+
+		const uint64_t rows = A.rows();
+		const uint64_t cols = A.cols();
+
+		if (rows != cols){
+			throw std::runtime_error("inplace_transpose only valid for square matrices");
+		}
+
+		for (uint64_t i = 0; i < rows; ++i){
+			for (uint64_t j = i + 1; j < cols; ++j){
+				T tmp = A(j,i);
+				A(j,i) = A(i,j);
+				A(i,j) = tmp;
+				//std::swap(A(j,i), A(i,j));
+			}
+		}
+	}
+
+	template <typename T>
+	utils::Matrix<T> transpose(const utils::Matrix<T>& A){
+
+		const uint64_t rows = A.rows();
+		const uint64_t cols = A.cols();
+
+		utils::Matrix<T> B(cols, rows, T{});
+		for (uint64_t i = 0; i < rows; ++i){
+			for (uint64_t j = 0; j < cols; ++j){
+				B(j,i) = A(i,j);
+			}
+		}
+		return B;
+	}
+
+
+
+
+
+
+
+
+
+
+
+
+
+} // namespace numerics
+
+
+
+
+
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+
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+
+
+
+
+#endif // _transpose_n_