Method ftrunc64

pulley/src/interp.rs:3760–3764

(&mut self, dst: FReg, src: FReg)

    }

    fn ftrunc64(&mut self, dst: FReg, src: FReg) -> ControlFlow<Done> {
        let a = self.state[src].get_f64();
        self.state[dst].set_f64(a.wasm_trunc());
        ControlFlow::Continue(())
    }

    fn ffloor64(&mut self, dst: FReg, src: FReg) -> ControlFlow<Done> {
        let a = self.state[src].get_f64();