STINNER Victor <[email protected]> added the comment:
> Remove code handling missing NAN and infinity: float("nan"), float("inf"),
> math.nan and math.inf are always available.
The code to support missing NaN was already removed by:
New changeset 1b2611eb0283055835e5df632a7a735db8c894b8 by Victor Stinner in
branch 'main':
bpo-46656: Remove Py_NO_NAN macro (GH-31160)
https://github.com/python/cpython/commit/1b2611eb0283055835e5df632a7a735db8c894b8
In fact, math.inf is already always available in Python 3.10 and older. There
was no "#ifdef" for missing infinity support. In Python 3.10, math.inf is
implemented as:
static double
m_inf(void)
{
#ifndef PY_NO_SHORT_FLOAT_REPR
return _Py_dg_infinity(0);
#else
return Py_HUGE_VAL;
#endif
}
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<https://bugs.python.org/issue46917>
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