Function guile_sys::scm_c_make_port_with_encoding

pub unsafe extern "C" fn scm_c_make_port_with_encoding(
    ptob: *mut scm_t_port_type, 
    mode_bits: c_ulong, 
    encoding: SCM, 
    conversion_strategy: SCM, 
    stream: scm_t_bits
) -> SCM