GRBBinvColj
GRBBinvColj
| int | GRBBinvColj( | GRBmodel | *model, |
| int | j, | ||
| GRBsvec | * x) |
Computes the solution to the linear system
, where
is the current simplex basis matrix and
is the column of the constraint matrix
associated with variable
.
Return value:
A non-zero return value indicates that a problem occurred while computing the desired vector. Refer to theError Codetable for a list of possible return values. Details on the error can be obtained by callingGRBgeterrormsg.
Arguments:
model: The model. Note that the model must have a current optimal basis, as computed byGRBoptimize.
j: Indicates the index of the column ofto use as the right-hand side for the linear solve. The indexjmust be between 0 andcols-1, wherecolsis the number of columns in the model.
x: The sparse result vector. The user is responsible for allocating theindandvalfields to be large enough to hold as many as one non-zero entry per constraint in the model.