Function gsl_sys::gsl_linalg_tri_invert

pub unsafe extern "C" fn gsl_linalg_tri_invert(
    Uplo: CBLAS_UPLO_t, 
    Diag: CBLAS_DIAG_t, 
    T: *mut gsl_matrix
) -> c_int

This is supported on crate feature v2_2 only.