| 1 | // SkFloatingPoint.h |
|---|---|
| 2 | |
| 3 | use crate::scalar; |
| 4 | |
| 5 | #[allow(clippy::eq_op)] |
| 6 | pub fn is_finite(array: &[scalar]) -> bool { |
| 7 | let mut prod: f32 = 0.0; |
| 8 | for x: &f32 in array { |
| 9 | prod *= x; |
| 10 | } |
| 11 | // At this point, `prod` will either be NaN or 0. |
| 12 | prod == prod |
| 13 | } |
| 14 | |
| 15 | #[cfg(test)] |
| 16 | mod tests { |
| 17 | #[test] |
| 18 | fn is_finite() { |
| 19 | assert!(!super::is_finite(&[0.0, f32::NAN])); |
| 20 | assert!(!super::is_finite(&[0.0, f32::INFINITY])); |
| 21 | assert!(super::is_finite(&[0.0])); |
| 22 | } |
| 23 | } |
| 24 |