| Chris Wailes | cd1aefd | 2023-07-13 13:36:21 -0700 | [diff] [blame] | 1 | #[inline] |
| 2 | #[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)] |
| 3 | pub fn fmin(x: f64, y: f64) -> f64 { |
| 4 | // IEEE754 says: minNum(x, y) is the canonicalized number x if x < y, y if y < x, the |
| 5 | // canonicalized number if one operand is a number and the other a quiet NaN. Otherwise it |
| 6 | // is either x or y, canonicalized (this means results might differ among implementations). |
| 7 | // When either x or y is a signalingNaN, then the result is according to 6.2. |
| 8 | // |
| 9 | // Since we do not support sNaN in Rust yet, we do not need to handle them. |
| 10 | // FIXME(nagisa): due to https://bugs.llvm.org/show_bug.cgi?id=33303 we canonicalize by |
| 11 | // multiplying by 1.0. Should switch to the `canonicalize` when it works. |
| 12 | (if y.is_nan() || x < y { x } else { y }) * 1.0 |
| 13 | } |
