Function gsl_sys::gsl_min_find_bracket

pub unsafe extern "C" fn gsl_min_find_bracket(
    f: *mut gsl_function, 
    x_minimum: *mut f64, 
    f_minimum: *mut f64, 
    x_lower: *mut f64, 
    f_lower: *mut f64, 
    x_upper: *mut f64, 
    f_upper: *mut f64, 
    eval_max: usize
) -> c_int