Message 56130 - Python tracker

➜

This issue tracker has been migrated to GitHub , and is currently read-only.
For more information, see the GitHub FAQs in the Python's Developer Guide.

In-reply-to
Author	arigo
Recipients	arigo
Date	2007年09月25日.11:31:10
SpamBayes Score	0.32613933
Marked as misclassified	No
Message-id	<1190719871.47.0.233788425538.issue1202@psf.upfronthosting.co.za>

Content
The functions zlib.crc32() and zlib.adler32() return a signed value in the range(-2147483648, 2147483648) on 32-bit platforms, but an unsigned value in the range(0, 4294967296) on 64-bit platforms. This means that half the possible answers are numerically different on these two kinds of platforms. Ideally, this should be fixed by having them always return unsigned numbers (their C return type is unsigned too). It's unclear if we can do this without breaking existing code, though :-(

Content

The functions zlib.crc32() and zlib.adler32() return a signed value
in the range(-2147483648, 2147483648) on 32-bit platforms, but an
unsigned value in the range(0, 4294967296) on 64-bit platforms. This
means that half the possible answers are numerically different on these
two kinds of platforms.
Ideally, this should be fixed by having them always return unsigned
numbers (their C return type is unsigned too). It's unclear if we can
do this without breaking existing code, though :-(

History
Date	User	Action	Args
2007年09月25日 11:31:11	arigo	set	spambayes_score: 0.326139 -> 0.32613933 recipients: + arigo
2007年09月25日 11:31:11	arigo	set	spambayes_score: 0.326139 -> 0.326139 messageid: <1190719871.47.0.233788425538.issue1202@psf.upfronthosting.co.za>
2007年09月25日 11:31:11	arigo	link	issue1202 messages
2007年09月25日 11:31:10	arigo	create

homepage