Public bug reported:
python3 Math bug: In accordance with IEEE_754-1985, math.sqrt(-1.25)
should return NaN, and print function should be able to indicate it.
Demo code:
import math
c = math.sqrt(-1.25)
print(c)
When run produces:
Traceback (most recent call last):
File "./float-test.py", line 4, in <module>
c = math.sqrt(-1.25)
ValueError: math domain error
Should produce:
NaN
OR:
NOT A NUMBER
For more information, see https://en.wikipedia.org/wiki/NaN
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: python3 3.8.2-0ubuntu2
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.6
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Sat Aug 15 21:30:13 2020
InstallationDate: Installed on 2020-04-26 (112 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: python3-defaults
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: python3-defaults (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1891782
Title:
python3 Math bug: In accordance with IEEE_754-1985, math.sqrt(-1.25)
should return NaN, and print function should be able to indicate it.
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