Function gsl_sys::gsl_poly_complex_solve_cubic

pub unsafe extern "C" fn gsl_poly_complex_solve_cubic(
    a: f64, 
    b: f64, 
    c: f64, 
    z0: *mut gsl_complex, 
    z1: *mut gsl_complex, 
    z2: *mut gsl_complex
) -> c_int