[issue39396] AIX: self.assertEqualSign(math.nextafter(-0.0, +0.0), +0.0) test fails on AIX

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

Checking how Python is linked or checking the libm version sounds overkill to me. "if (x == y)" test is really cheap: I don't expect nextafter() to be used in performance critical code path anyway. That's why I even consider to add this code path on all platforms, not only AIX.

Mark: what's your call on that one? Make the code conditional on AIX? In practice, it seems like only (old libm) AIX nextafter() requires to be "patched".

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<https://bugs.python.org/issue39396>
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