diff options
| author | Mark Dickinson <mdickinson@enthought.com> | 2021-06-12 09:23:02 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-06-12 09:23:02 (GMT) |
| commit | 4a42cebf6dd769e2fa4e234a9e91093b3ad1cb63 (patch) | |
| tree | 925efc812b8810d8c5fb6c1040307d1cacf4b976 /Misc | |
| parent | 3ec3ee7d2e9b45b586e486e429b412d6d0ca530f (diff) | |
| download | cpython-4a42cebf6dd769e2fa4e234a9e91093b3ad1cb63.zip cpython-4a42cebf6dd769e2fa4e234a9e91093b3ad1cb63.tar.gz cpython-4a42cebf6dd769e2fa4e234a9e91093b3ad1cb63.tar.bz2 | |
bpo-44339: Fix math.pow corner case to comply with IEEE 754 (GH-26606)
Change the behaviour of `math.pow(0.0, -math.inf)` and `math.pow(-0.0, -math.inf)` to return positive infinity instead of raising `ValueError`. This makes `math.pow` consistent with the built-in `pow` (and the `**` operator) for this particular special case, and brings the `math.pow` special-case handling into compliance with IEEE 754.
Diffstat (limited to 'Misc')
| -rw-r--r-- | Misc/NEWS.d/next/Library/2021-06-08-17-47-38.bpo-44339.9JwMSc.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Library/2021-06-08-17-47-38.bpo-44339.9JwMSc.rst b/Misc/NEWS.d/next/Library/2021-06-08-17-47-38.bpo-44339.9JwMSc.rst new file mode 100644 index 0000000..10499eb --- /dev/null +++ b/Misc/NEWS.d/next/Library/2021-06-08-17-47-38.bpo-44339.9JwMSc.rst @@ -0,0 +1,3 @@ +Change ``math.pow(±0.0, -math.inf)`` to return ``inf`` instead of raising +``ValueError``. This brings the special-case handling of ``math.pow`` into +compliance with the IEEE 754 standard. |