{"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"assert_eq!(2.3f32.copysign(-1.0),"}]}
    assert_eq!(2.3f32.copysign(-1.0), -2.3f32);
    println!("{}", 2.3f32.log2());
    println!("{}", 2.3f32.powf(2.0));