libfringe/tests/fpe.rs

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// This file is part of libfringe, a low-level green threading library.
// Copyright (c) Ben Segall <talchas@gmail.com>
// Copyright (c) edef <edef@edef.eu>
// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
// http://opensource.org/licenses/MIT>, at your option. This file may not be
// copied, modified, or distributed except according to those terms.
#![cfg(target_os = "linux")]
#![feature(test)]
#![feature(thread_local)]
#![feature(asm)]
extern crate fringe;
extern crate test;
use fringe::{OsStack, Generator};
use test::black_box;
const FE_DIVBYZERO: i32 = 0x4;
extern {
fn feenableexcept(except: i32) -> i32;
}
#[test]
#[ignore]
fn fpe() {
let stack = OsStack::new(0).unwrap();
let mut gen = Generator::new(stack, move |yielder, ()| {
yielder.suspend(1.0 / black_box(0.0));
});
unsafe { feenableexcept(FE_DIVBYZERO); }
println!("{:?}", gen.resume(()));
}