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b7449926 | 1 | // run-pass |
0531ce1d XL |
2 | // ignore-emscripten fma not implemented in emscripten |
3 | ||
1a4d82fc JJ |
4 | macro_rules! assert_approx_eq { |
5 | ($a:expr, $b:expr) => ({ | |
1a4d82fc JJ |
6 | let (a, b) = (&$a, &$b); |
7 | assert!((*a - *b).abs() < 1.0e-6, | |
8 | "{} is not approximately equal to {}", *a, *b); | |
9 | }) | |
10 | } | |
223e47cc | 11 | |
223e47cc | 12 | pub fn main() { |
7453a54e SL |
13 | use std::f32; |
14 | use std::f64; | |
223e47cc | 15 | |
7453a54e SL |
16 | assert_approx_eq!(64f32.sqrt(), 8f32); |
17 | assert_approx_eq!(64f64.sqrt(), 8f64); | |
223e47cc | 18 | |
7453a54e SL |
19 | assert_approx_eq!(25f32.powi(-2), 0.0016f32); |
20 | assert_approx_eq!(23.2f64.powi(2), 538.24f64); | |
223e47cc | 21 | |
7453a54e SL |
22 | assert_approx_eq!(0f32.sin(), 0f32); |
23 | assert_approx_eq!((f64::consts::PI / 2f64).sin(), 1f64); | |
223e47cc | 24 | |
7453a54e SL |
25 | assert_approx_eq!(0f32.cos(), 1f32); |
26 | assert_approx_eq!((f64::consts::PI * 2f64).cos(), 1f64); | |
223e47cc | 27 | |
7453a54e SL |
28 | assert_approx_eq!(25f32.powf(-2f32), 0.0016f32); |
29 | assert_approx_eq!(400f64.powf(0.5f64), 20f64); | |
223e47cc | 30 | |
7453a54e SL |
31 | assert_approx_eq!((1f32.exp() - f32::consts::E).abs(), 0f32); |
32 | assert_approx_eq!(1f64.exp(), f64::consts::E); | |
223e47cc | 33 | |
7453a54e SL |
34 | assert_approx_eq!(10f32.exp2(), 1024f32); |
35 | assert_approx_eq!(50f64.exp2(), 1125899906842624f64); | |
223e47cc | 36 | |
7453a54e SL |
37 | assert_approx_eq!((f32::consts::E.ln() - 1f32).abs(), 0f32); |
38 | assert_approx_eq!(1f64.ln(), 0f64); | |
223e47cc | 39 | |
7453a54e SL |
40 | assert_approx_eq!(10f32.log10(), 1f32); |
41 | assert_approx_eq!(f64::consts::E.log10(), f64::consts::LOG10_E); | |
223e47cc | 42 | |
7453a54e SL |
43 | assert_approx_eq!(8f32.log2(), 3f32); |
44 | assert_approx_eq!(f64::consts::E.log2(), f64::consts::LOG2_E); | |
223e47cc | 45 | |
7453a54e SL |
46 | assert_approx_eq!(1.0f32.mul_add(2.0f32, 5.0f32), 7.0f32); |
47 | assert_approx_eq!(0.0f64.mul_add(-2.0f64, f64::consts::E), f64::consts::E); | |
970d7e83 | 48 | |
7453a54e SL |
49 | assert_approx_eq!((-1.0f32).abs(), 1.0f32); |
50 | assert_approx_eq!(34.2f64.abs(), 34.2f64); | |
223e47cc | 51 | |
7453a54e SL |
52 | assert_approx_eq!(3.8f32.floor(), 3.0f32); |
53 | assert_approx_eq!((-1.1f64).floor(), -2.0f64); | |
970d7e83 | 54 | |
7453a54e SL |
55 | assert_approx_eq!((-2.3f32).ceil(), -2.0f32); |
56 | assert_approx_eq!(3.8f64.ceil(), 4.0f64); | |
223e47cc | 57 | |
7453a54e SL |
58 | assert_approx_eq!(0.1f32.trunc(), 0.0f32); |
59 | assert_approx_eq!((-0.1f64).trunc(), 0.0f64); | |
223e47cc | 60 | } |