Function fltk::gl::gluUnProject4

pub unsafe extern "C" fn gluUnProject4(
    winX: f64, 
    winY: f64, 
    winZ: f64, 
    clipW: f64, 
    model: *const f64, 
    proj: *const f64, 
    view: *const i32, 
    nearVal: f64, 
    farVal: f64, 
    objX: *mut f64, 
    objY: *mut f64, 
    objZ: *mut f64, 
    objW: *mut f64
) -> i32