[MATH-273] Basic variable is not found correctly in simplex tableau

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0
• Fix Version/s: 2.0
• Assignee: Luc Maisonobe
• Reporter: Benjamin McCann
• Created: 03/Jun/09 05:11
• Updated: 07/Aug/09 09:15
• Resolved: 03/Jun/09 09:07

Description

The last patch to SimplexTableau caused an automated test suite I'm running at work to go down a new code path and uncover what is hopefully the last bug remaining in the Simplex code.
SimplexTableau was assuming an entry in the tableau had to be nonzero to indicate a basic variable, which is incorrect - the entry should have a value equal to 1.