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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 the Error Code table for a list of possible return values. Details on the error can be obtained by calling GRBgeterrormsg.
Arguments:
model: The model. Note that the model must have a current optimal basis, as computed by GRBoptimize.
j: Indicates the index of the column of to use
as the right-hand side for the linear solve. The index j
must be between 0 and cols-1, where cols is the
number of columns in the model.
x: The sparse result vector. The user is responsible for allocating the ind and val fields to be large enough to hold as many as one non-zero entry per constraint in the model.
