bugAxiom Computer Algebra System - Bugs: bug #10067, atan(tan(3)) => 3

 
 

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bug #10067: atan(tan(3)) => 3

Submitted by:  None
Submitted on:  Thu 19 Aug 2004 05:41:11 PM UTC  
 
Category: algebraSeverity: 3 - Normal
Item Group: code bugStatus: Wont Fix
Privacy: PublicAssigned to: None
Originator Name: Originator Email: -unavailable-
Open/Closed: ClosedRelease: 
Reproducibility: NoneFixed Release: November 2008
Error message: 
Example of code trigerring the bug: 

atan(tan(3))

Internal cause: 

In Elemntry.spad, function iatan:

is?(x, optan) => y

Thu 31 Mar 2005 06:51:33 PM UTC, comment #1:

Transferred to page.axiom-developer.org

Anonymous
Thu 19 Aug 2004 05:41:11 PM UTC, original submission:

In Elemntry, atan(tan(3)) returns 3.
The error is in iatan:

is?(x, optan) => y

but only if -pi/2 < y < pi/2

Cheers

Anonymous

 

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Depends on the following items: None found

Items that depend on this one: None found

 

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  • -unavailable- added by axiom (Updated the item)
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    Follow 4 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Tue 25 Nov 2008 04:35:03 AM UTCaxiomStatustransferred=>Wont Fix
      Open/ClosedOpen=>Closed
      Fixed Release=>November 2008
    Thu 31 Mar 2005 10:44:02 PM UTCbillpage1StatusNone=>transferred

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