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Merge pull request rust-lang#152 from oli-obk/intrinsics
Intrinsics and overflow
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| Original file line number | Diff line number | Diff line change |
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| // Copyright 2015 The Rust Project Developers. See the COPYRIGHT | ||
| // file at the top-level directory of this distribution and at | ||
| // http://rust-lang.org/COPYRIGHT. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | ||
| // http://www.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. | ||
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| #![allow(exceeding_bitshifts)] | ||
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| fn main() { | ||
| let _n = 1i64 >> 64; //~ Overflow(Shr) | ||
| } |
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| // Copyright 2016 The Rust Project Developers. See the COPYRIGHT | ||
| // file at the top-level directory of this distribution and at | ||
| // http://rust-lang.org/COPYRIGHT. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | ||
| // http://www.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. | ||
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| use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT}; | ||
| use std::sync::atomic::Ordering::*; | ||
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| static mut ATOMIC: AtomicBool = ATOMIC_BOOL_INIT; | ||
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| fn main() { | ||
| unsafe { | ||
| assert_eq!(*ATOMIC.get_mut(), false); | ||
| ATOMIC.store(true, SeqCst); | ||
| assert_eq!(*ATOMIC.get_mut(), true); | ||
| ATOMIC.fetch_or(false, SeqCst); | ||
| assert_eq!(*ATOMIC.get_mut(), true); | ||
| ATOMIC.fetch_and(false, SeqCst); | ||
| assert_eq!(*ATOMIC.get_mut(), false); | ||
| ATOMIC.fetch_nand(true, SeqCst); | ||
| assert_eq!(*ATOMIC.get_mut(), true); | ||
| ATOMIC.fetch_xor(true, SeqCst); | ||
| assert_eq!(*ATOMIC.get_mut(), false); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,36 @@ | ||
| // Copyright 2016 The Rust Project Developers. See the COPYRIGHT | ||
| // file at the top-level directory of this distribution and at | ||
| // http://rust-lang.org/COPYRIGHT. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | ||
| // http://www.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. | ||
|
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| use std::sync::atomic::{AtomicIsize, ATOMIC_ISIZE_INIT}; | ||
| use std::sync::atomic::Ordering::*; | ||
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| static ATOMIC: AtomicIsize = ATOMIC_ISIZE_INIT; | ||
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| fn main() { | ||
| // Make sure trans can emit all the intrinsics correctly | ||
| ATOMIC.compare_exchange(0, 1, Relaxed, Relaxed).ok(); | ||
| ATOMIC.compare_exchange(0, 1, Acquire, Relaxed).ok(); | ||
| ATOMIC.compare_exchange(0, 1, Release, Relaxed).ok(); | ||
| ATOMIC.compare_exchange(0, 1, AcqRel, Relaxed).ok(); | ||
| ATOMIC.compare_exchange(0, 1, SeqCst, Relaxed).ok(); | ||
| ATOMIC.compare_exchange(0, 1, Acquire, Acquire).ok(); | ||
| ATOMIC.compare_exchange(0, 1, AcqRel, Acquire).ok(); | ||
| ATOMIC.compare_exchange(0, 1, SeqCst, Acquire).ok(); | ||
| ATOMIC.compare_exchange(0, 1, SeqCst, SeqCst).ok(); | ||
| ATOMIC.compare_exchange_weak(0, 1, Relaxed, Relaxed).ok(); | ||
| ATOMIC.compare_exchange_weak(0, 1, Acquire, Relaxed).ok(); | ||
| ATOMIC.compare_exchange_weak(0, 1, Release, Relaxed).ok(); | ||
| ATOMIC.compare_exchange_weak(0, 1, AcqRel, Relaxed).ok(); | ||
| ATOMIC.compare_exchange_weak(0, 1, SeqCst, Relaxed).ok(); | ||
| ATOMIC.compare_exchange_weak(0, 1, Acquire, Acquire).ok(); | ||
| ATOMIC.compare_exchange_weak(0, 1, AcqRel, Acquire).ok(); | ||
| ATOMIC.compare_exchange_weak(0, 1, SeqCst, Acquire).ok(); | ||
| ATOMIC.compare_exchange_weak(0, 1, SeqCst, SeqCst).ok(); | ||
| } |
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| // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT | ||
| // file at the top-level directory of this distribution and at | ||
| // http://rust-lang.org/COPYRIGHT. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | ||
| // http://www.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. | ||
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| macro_rules! assert_approx_eq { | ||
| ($a:expr, $b:expr) => ({ | ||
| let (a, b) = (&$a, &$b); | ||
| assert!((*a - *b).abs() < 1.0e-6, | ||
| "{} is not approximately equal to {}", *a, *b); | ||
| }) | ||
| } | ||
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| pub fn main() { | ||
| use std::f32; | ||
| use std::f64; | ||
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| assert_approx_eq!(64f32.sqrt(), 8f32); | ||
| assert_approx_eq!(64f64.sqrt(), 8f64); | ||
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| assert_approx_eq!(25f32.powi(-2), 0.0016f32); | ||
| assert_approx_eq!(23.2f64.powi(2), 538.24f64); | ||
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| assert_approx_eq!(0f32.sin(), 0f32); | ||
| assert_approx_eq!((f64::consts::PI / 2f64).sin(), 1f64); | ||
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| assert_approx_eq!(0f32.cos(), 1f32); | ||
| assert_approx_eq!((f64::consts::PI * 2f64).cos(), 1f64); | ||
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| assert_approx_eq!(25f32.powf(-2f32), 0.0016f32); | ||
| assert_approx_eq!(400f64.powf(0.5f64), 20f64); | ||
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| assert_approx_eq!((1f32.exp() - f32::consts::E).abs(), 0f32); | ||
| assert_approx_eq!(1f64.exp(), f64::consts::E); | ||
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| assert_approx_eq!(10f32.exp2(), 1024f32); | ||
| assert_approx_eq!(50f64.exp2(), 1125899906842624f64); | ||
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| assert_approx_eq!((f32::consts::E.ln() - 1f32).abs(), 0f32); | ||
| assert_approx_eq!(1f64.ln(), 0f64); | ||
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| assert_approx_eq!(10f32.log10(), 1f32); | ||
| assert_approx_eq!(f64::consts::E.log10(), f64::consts::LOG10_E); | ||
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| assert_approx_eq!(8f32.log2(), 3f32); | ||
| assert_approx_eq!(f64::consts::E.log2(), f64::consts::LOG2_E); | ||
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| assert_approx_eq!(1.0f32.mul_add(2.0f32, 5.0f32), 7.0f32); | ||
| assert_approx_eq!(0.0f64.mul_add(-2.0f64, f64::consts::E), f64::consts::E); | ||
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| assert_approx_eq!((-1.0f32).abs(), 1.0f32); | ||
| assert_approx_eq!(34.2f64.abs(), 34.2f64); | ||
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| assert_approx_eq!(3.8f32.floor(), 3.0f32); | ||
| assert_approx_eq!((-1.1f64).floor(), -2.0f64); | ||
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| assert_approx_eq!((-2.3f32).ceil(), -2.0f32); | ||
| assert_approx_eq!(3.8f64.ceil(), 4.0f64); | ||
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| assert_approx_eq!(0.1f32.trunc(), 0.0f32); | ||
| assert_approx_eq!((-0.1f64).trunc(), 0.0f64); | ||
| } |