[issue26040] Improve coverage and rigour of test.test_math

[Jeff Allen]

Jeff Allen added the comment:

Mark: Thanks for validating the additional cases so carefully.

If you still want to apply it in stages then I suppose the change to the comparison logic could go first (untested idea), although that's also where I could most easily have made a mistake.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue26040>
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