bugAxiom Computer Algebra System - Bugs: bug #6490, when is broken


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bug #6490: when is broken

Submitter:  Tim Daly <axiom>
Submitted:  Wed 12 Nov 2003 03:36:01 AM UTC
Category:  interpreter Severity:  3 - Normal
Item Group:  code bug Status:  transferred
Privacy:  Public Assigned to:  axiom
Originator Name:  Tim Daly Open/Closed:  Open
Release:  20031110 Reproducibility:  None
Fixed Release: 
Error message: 

There are no library operations named when

Example of code trigerring the bug: 

ch : Integer -> UnivariatePolynomial(x,FRAC(INT))
ch(0) == 1
ch(1) == x
ch(n) == 2 x ch(n-1) - ch(n-2) when n > 1

Internal cause: 

The parser is broken

Wed 12 Nov 2003 03:36:01 AM UTC, original submission:  

The NAG interpreter and the Axiom interpreter do not
accept the when and otherwise verbs when defining
piecewise functions.

Tim Daly <axiom>
Group administrator


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Follows 1 latest change.

Date Changed by Updated Field Previous Value => Replaced by
2005-01-21 billpage1 StatusNone transferred

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