Purpose
Get the
status of a variable or constraint in a basis.
Synopsis
function getbstat(b:basis,v:mpvar):integer
function getbstat(b:basis,c:linctr):integer
Arguments
|
b
|
A basis
|
|
v
|
A decision variable
|
|
c
|
A linear constraint
|
Return value
Basis status. For a variable:
|
-1
|
Variable is not in the basis
|
|
0
|
Variable is non-basic at lower bound, or superbasic at zero if the variable has no lower bound
|
|
1
|
Variable is basic
|
|
2
|
Variable is non-basic at upper bound
|
|
3
|
Variable is super-basic
|
For a constraint:
|
-1
|
Constraint is not in the basis
|
|
0
|
Slack, surplus or artificial is non-basic at lower bound
|
|
1
|
Slack, surplus or artificial is basic
|
|
2
|
Slack or surplus is non-basic at upper bound
|
|
3
|
Slack or surplus is super-basic
|
Related topics
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