When solving MIP, I want to set a primal bound and a dual-bound for a model before and during the solving, which interfaces should I call?

[linpeng0105]

When solving MIP, I could get a primal bound (incumbent) and a dual-bound via a stand-alone heuristic.
I want to set the primal bound and the dual bound for a model before and during the solving, which interfaces should I call?

[jajhall]

You can pass a (partial) integer feasible solution to highs that give it an initial primal bound. Use Highs::passSolution, which has two versions according to whether you're passing a full set of solution values (as a HighsSolution instance, with only the col_value vector required) or a "sparse" primal solution (as number of values and pointers to arrays of indices and values). HiGHS will attempt to complete this solution and then use it to obtain a primal bound (if it is feasible).

It is not possible to set the dual bound value