#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

#endif // _transpose_n_