Function gsl_sys::gsl_multifit_linear_lcurvature

pub unsafe extern "C" fn gsl_multifit_linear_lcurvature(
    y: *const gsl_vector, 
    reg_param: *const gsl_vector, 
    rho: *const gsl_vector, 
    eta: *const gsl_vector, 
    kappa: *mut gsl_vector, 
    work: *mut gsl_multifit_linear_workspace
) -> c_int