[issue39484] time_ns() and time() cannot be compared on windows

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

>>> 1580301619906185300/10**9
1580301619.9061854
>>> 1580301619906185300/1e9
1580301619.9061852
>>> float(F(1580301619906185300/10**9) * 10**9 - 1580301619906185300)
88.5650634765625
>>> float(F(1580301619906185300/1e9) * 10**9 - 1580301619906185300)
-149.853515625

1580301619906185300/10**9 is more accurate than 1580301619906185300/1e9.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39484>
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