/usr/include/ITK-4.5/eispack/rs.h is in libinsighttoolkit4-dev 4.5.0-3.
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1 2 3 4 5 6 7 8 9 10 11 | /*: Computes eigenvalues and eigenvectors of a real symmetric matrix */
extern int v3p_netlib_rs_(
v3p_netlib_integer v3p_netlib_const *nm, /*!< (IN) leading dimension of matrices */
v3p_netlib_integer v3p_netlib_const *n, /*!< (IN) order of the square matrix a */
v3p_netlib_doublereal *a, /*!< (IN) real symmetric matrix */
v3p_netlib_doublereal *w, /*!< (OUT) eigenvalues in ascending order */
v3p_netlib_integer v3p_netlib_const *matz, /*!< (IN) set nonzero if eigenvectors wanted */
v3p_netlib_doublereal *z__, /*!< (OUT) eigenvectors */
v3p_netlib_doublereal *fv1, v3p_netlib_doublereal *fv2, /*!< scratch */
v3p_netlib_integer v3p_netlib_const *ierr /*!< (OUT) normal completion code is 0 */
);
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