pub type LPALGETSOURCEI64VSOFT = Option<unsafe extern "C" fn(arg1: ALuint, arg2: ALenum, arg3: *mut ALint64SOFT)>;
enum LPALGETSOURCEI64VSOFT { None, Some(unsafe extern "C" fn(_: u32, _: i32, _: *mut i64)), }
No value.
Some value of type T.
T