1 /*: Computes coord transf etc from QR factorisation of float matrix */ 2 extern int v3p_netlib_sqrsl_( 3 v3p_netlib_real v3p_netlib_const *x, v3p_netlib_integer v3p_netlib_const *ldx, /*!< (IN) output of sqrdc_, n x k matrix */ 4 v3p_netlib_integer v3p_netlib_const *n, v3p_netlib_integer v3p_netlib_const *k, /*!< (IN) k <= min(n,p) with n,p from sqrdc_ */ 5 v3p_netlib_real v3p_netlib_const *qraux, /*!< (IN) qraux output of sqrdc_ */ 6 v3p_netlib_real v3p_netlib_const *y, /*!< (IN) n-vector to operate on */ 7 v3p_netlib_real *qy, /*!< (OUT) q*y */ 8 v3p_netlib_real *qty, /*!< (OUT) q^T*y (conjugate transpose if complex) */ 9 v3p_netlib_real *b, /*!< (OUT) solution b of min norm_2(y - x*b) */ 10 v3p_netlib_real *rsd, /*!< (OUT) least squares residual y - x*b = proj of y on orth complement of columns(x) */ 11 v3p_netlib_real *xb, /*!< (OUT) least squares approx of x*b = proj of y on columns(x) */ 12 v3p_netlib_integer v3p_netlib_const *job, /*!< (IN) decimal acbde: a:compute qy; c:qty; b:qty+b; d:qty+rsd; e:qty+xb */ 13 v3p_netlib_integer *info /*!< non-zero if r is singular and b is set. */ 14 ); 15