pub type zzipsc_ft = Option<unsafe extern "C" fn(zeta_r: *mut f64, zeta_i: *mut f64, chi: *mut dcomplex)>;
enum zzipsc_ft { None, Some(unsafe extern "C" fn(_: *mut f64, _: *mut f64, _: *mut dcomplex)), }
No value.
Some value of type T.
T