diff options
Diffstat (limited to 'src/libstd/f64.rs')
| -rw-r--r-- | src/libstd/f64.rs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/libstd/f64.rs b/src/libstd/f64.rs index fe64d27b1ef..c033198f021 100644 --- a/src/libstd/f64.rs +++ b/src/libstd/f64.rs @@ -837,7 +837,7 @@ impl f64 { if self == Self::NEG_INFINITY { Self::NEG_INFINITY } else { - (self + ((self * self) + 1.0).sqrt()).ln().copysign(self) + (self.abs() + ((self * self) + 1.0).sqrt()).ln().copysign(self) } } @@ -1443,6 +1443,8 @@ mod tests { // issue 63271 assert_approx_eq!(2.0f64.asinh(), 1.443635475178810342493276740273105f64); assert_approx_eq!((-2.0f64).asinh(), -1.443635475178810342493276740273105f64); + // regression test for the catastrophic cancellation fixed in 72486 + assert_approx_eq!((-67452098.07139316f64).asinh(), -18.72007542627454439398548429400083); } #[test] |