Function guile_sys::scm_make_custom_binary_input_output_port

pub unsafe extern "C" fn scm_make_custom_binary_input_output_port(
    arg1: SCM, 
    arg2: SCM, 
    arg3: SCM, 
    arg4: SCM, 
    arg5: SCM, 
    arg6: SCM
) -> SCM