Type Alias fprintf_function 

pub type fprintf_function = Option<unsafe extern "C" fn(*mut _IO_FILE, *const i8, ...) -> i32>;

Aliased Type

pub enum fprintf_function {
    None,
    Some(unsafe extern "C" fn(*mut _IO_FILE, *const i8, ...) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut _IO_FILE, *const i8, ...) -> i32)

Some value of type T.