text: extern int v3p_netlib_dgecon_(
    char *norm,
    v3p_netlib_integer *n,
    v3p_netlib_doublereal *a,
    v3p_netlib_integer *lda,
    v3p_netlib_doublereal *anorm,
    v3p_netlib_doublereal *rcond,
    v3p_netlib_doublereal *work,
    v3p_netlib_integer *iwork,
    v3p_netlib_integer *info,
    v3p_netlib_ftnlen norm_len
    );
  