You can potentially use linear inequalities -- the A and b matrix.
linear inequalities are accepted by all forms of ga() and gamultiobj()
You can potentially use nonlinear inequalities and nonlinear equalities -- the nonlcon parameter,
Note: if you have integer constraints then you can use nonlinear inequalities, but nonlinear equalities. The ceq return value of the nonlcon function must be empty if you have integer constraints.
