ILOG CPLEX .NET Reference Manual

Cplex.IsQC Method 

Returns true if the active model has quadratic constraints.

public virtual bool IsQC();

Return Value

true if the active model has quadratic constraints.

Remarks

See the topic QCP in the ILOG CPLEX User's Manual for more detail about the characteristics of such constraints with respect to their concavity and positive semi-definiteness (PSD).

See Also

Cplex Class | ILOG.CPLEX Namespace