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bpo-39288: Add examples to math.nextafter() documentation (GH-17962)

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Victor Stinner 2020-01-12 12:57:47 +01:00 • committed by GitHub
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Doc/library/math.rst
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@ -219,6 +219,13 @@ Number-theoretic and representation functions
If *x* is equal to *y*, return *y*.
Examples:
* ``math.nextafter(x, math.inf)`` goes up: towards positive infinity.
* ``math.nextafter(x, -math.inf)`` goes down: towards minus infinity.
* ``math.nextafter(x, 0.0)`` goes towards zero.
* ``math.nextafter(x, math.copysign(math.inf, x))`` goes away from zero.
.. versionadded:: 3.9
.. function:: perm(n, k=None)