void qr_common_get_reduced_QR(uint8_t m, uint8_t n, matrix_t Q[m][m], matrix_t R[m][n], matrix_t red_Q[m][n], matrix_t red_R[n][n])
Compute the reduced form of the QR-decomposition algorithm.
void qr_common_backward_subst(uint8_t m, uint8_t n, matrix_t U[][n], matrix_t b[m], matrix_t x_sol[m])
Implements the backward substitution algorithm.