CROSSOVER

Newton barrier: This control determines whether the barrier method will cross over to the simplex method when at optimal solution has been found, to provide an end basis (see XPRSgetbasis, XPRSwritebasis) and advanced sensitivity analysis information (see XPRSrange).

Integer

-1	Determined automatically.
0	No crossover.
1	Primal crossover first.
2	Dual crossover first.

-1

The full primal and dual solution is available whether or not crossover is used. The crossover must not be disabled if the barrier is used to reoptimize nodes of a MIP.

By default crossover will not be performed on QP and MIQP problems.

XPRSlpoptimize ( LPOPTIMIZE), XPRSmipoptimize ( MIPOPTIMIZE).