CPXXgetnumnz and CPXgetnumnz
The routine CPXXgetnumnz/CPXgetnumnz accesses the number of
nonzero elements in the constraint matrix of a CPLEX problem object, not
including the objective function, quadratic constraints,
or the bounds constraints on the variables.
CPXNNZ CPXXgetnumnz( CPXCENVptr env, CPXCLPptr lp )
int CPXgetnumnz( CPXCENVptr env, CPXCLPptr lp )
Description
The routine CPXXgetnumnz/CPXgetnumnz accesses the number of
nonzero elements in the constraint matrix of a CPLEX problem object, not
including the objective function, quadratic constraints,
or the bounds constraints on the variables.
Arguments
- env
-
A pointer to the CPLEX environment as returned by
CPXXopenCPLEX/CPXopenCPLEX. - lp
-
A pointer to a CPLEX problem object as returned by
CPXXcreateprob/CPXcreateprob.
Return
If the problem object or environment does not exist,CPXXgetnumnz/CPXgetnumnz returns the value 0 (zero); otherwise, it returns the number of nonzero elements.
Example
cur_numnz = CPXgetnumnz (env, lp);