Macro CPX_MAX_DUAL_RESIDUAL

Numeric meaning (double): To access maximum dual residual value. For a simplex solution, this is the maximum of the vector |c-B'pi|, and for a barrier solution, it is the maximum of the vector |A'pi+rc-c| for the unscaled problem

Integer meaning: To access the lowest index where the maximum dual residual occurs for the unscaled problem