Function guile_sys::scm_hash_fn_ref

pub unsafe extern "C" fn scm_hash_fn_ref(
    table: SCM, 
    obj: SCM, 
    dflt: SCM, 
    hash_fn: scm_t_hash_fn, 
    assoc_fn: scm_t_assoc_fn, 
    closure: *mut c_void
) -> SCM