Message 274568 - Python tracker

Message274568

Author	steven.daprano
Recipients	steven.daprano
Date	2016-09-06.17:04:33
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1473181473.32.0.514007439316.issue27975@psf.upfronthosting.co.za>
In-reply-to

Content
Currently, math.isnan(n) and math.isinf(n) for n an int may raise OverflowError if n is too big to convert to a float, e.g.: py> math.isnan(10**10000) Traceback (most recent call last): File "<stdin>", line 1, in <module> OverflowError: int too large to convert to float But this conversion is unnecessary. int does not support either INF or NAN, so there is no need to convert the value to float first. If the argument is an int, the result must be False. The same applies to Fraction.

Content

Currently, math.isnan(n) and math.isinf(n) for n an int may raise OverflowError if n is too big to convert to a float, e.g.:

py> math.isnan(10**10000)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OverflowError: int too large to convert to float


But this conversion is unnecessary. int does not support either INF or NAN, so there is no need to convert the value to float first. If the argument is an int, the result must be False.

The same applies to Fraction.

History
Date	User	Action	Args
2016-09-06 17:04:33	steven.daprano	set	recipients: + steven.daprano
2016-09-06 17:04:33	steven.daprano	set	messageid: <1473181473.32.0.514007439316.issue27975@psf.upfronthosting.co.za>
2016-09-06 17:04:33	steven.daprano	link	issue27975 messages
2016-09-06 17:04:33	steven.daprano	create