Function PEM_write_RSAPrivateKey

pub unsafe extern "C" fn PEM_write_RSAPrivateKey(
    fp: *mut FILE,
    x: *mut RSA,
    enc: *const EVP_CIPHER,
    pass: *const c_uchar,
    pass_len: c_int,
    cb: pem_password_cb,
    u: *mut c_void,
) -> c_int