extern crate rustr;

#[cfg(feature = "engine")]
use rustr::feature::engine::*;

#[cfg(feature = "engine")]
fn main() {
    let mut re =  unsafe { REngine::init().unwrap() };
    let res: f64 = re.eval("1+1").unwrap();
    println!("{}", res);
    assert_eq!(2.0, res);
    unsafe{re.leave()};
}

#[cfg(not(feature = "engine"))]
fn main(){

}