Summary

basic arithmetic broken on 64-bit platforms

Metadata

• Id: 85df87b82944fd37931c0e09d0c9578150ea1082
• Trac id: 369
• Type: defect
• Reporter: felix
• Owner: felix
• Cc:
• Status: closed
• Component: unknown
• Estimated difficulty:
• Resolution: fixed
• Priority: major
• Milestone: 4.9.0
• Version: 4.6.x
• Changetime: 2012-09-24 21:47:48 UTC
• Created: 2010-09-02 11:31:10 UTC
• Keywords: arithmetic

Description

On 64-bit systems, fixnum range can exceed the precision of doubles, which will generate sometimes incorrect results (due to the way overflow is currently detected). +, -, * and / will have to be reimplemented completely differently.

(reported by Jeronimo Pellegrini)

Changes and comments

[2010-09-29 08:46:37 UTC] felix changed status from new to closed

[2010-09-29 08:46:37 UTC] felix set resolution to fixed

[2010-09-29 08:46:37 UTC] felix wrote:

Has been fixed in "overflow-detection" branch and merged into "experimental" to be released as 4.6.3.

[2011-06-01 09:00:41 UTC] felix changed milestone from 4.7.0 to 4.8.0

[2011-06-01 09:00:41 UTC] felix wrote:

Milestone 4.7.0 deleted

[2012-09-24 21:47:48 UTC] felix changed milestone from 4.8.0 to 4.9.0

[2012-09-24 21:47:48 UTC] felix wrote:

Milestone 4.8.0 deleted