Macro q1tsim::declare_controlled

macro_rules! declare_controlled {
    ($(#[$attr:meta])* $name:ident, $gate_type:ty) => { ... };
    ($(#[$attr:meta])* $name:ident, $gate_type:ty, cost=$cost:expr $(, arg=$arg:ident)* $(, open_qasm=$open_qasm:expr)* $(, c_qasm=$c_qasm:expr)*) => { ... };
}