Load a previously saved basis.

0 if function executed successfully, 1 otherwise.

The following code saves the current basis prior to some matrix changes, before subsequently reloading the saved basis to solve the linear relaxation.

XPRBprob expl2;
XPRBbasis basis;
   ...
expl2 = XPRBnewprob("example2");
XPRBlpoptimize(expl2, "");
basis = XPRBsavebasis(expl2);
   ...
XPRBloadmat(expl2);
XPRBloadbasis(basis);
XPRBdelbasis(basis);
XPRBlpoptimize(expl2, "");

This function loads a basis for the current problem. The basis must have been saved using function XPRBsavebasis. It is not possible to load a basis saved for any other problem than the current one, even if the problems are similar. This function takes into account that the problem may have been modified since the basis has been stored (addition of variables and constraints is handled—deletion of constraints is not handled: instead of entirely deleting a constraint, change its type to XPRB_N using XPRBsetctrtype if you wish to load the basis later on). For reading a basis from a file, the Optimizer library function XPRSreadbasis may be used. Note that the problem has to be loaded explicitly (function XPRBloadmat) before the basis is re-input with XPRBloadbasis. Furthermore, if the reference to a basis is not used any more it should be deleted using function XPRBdelbasis.

XPRBdelbasis, XPRBsavebasis, XPRSreadbasis (see Optimizer Reference Manual), XPRSwritebasis (see Optimizer Reference Manual).