In some cases the routine of ALIAS-C++ have procedure arguments that are useless. ALIAS-C++ proposes void procedures that may be used as such argument and have no effect on the calculation:

`int ALIAS_Simp_Proc_Void`: a simplification procedure that always return 0`INTERVAL_MATRIX ALIAS_Gradient_Void(int l1,int l2,INTERVAL_VECTOR &P)`: a gradient procedure that returns a not defined interval matrix`int ALIAS_Matrix_Void(INTERVAL_VECTOR &Box,INTERVAL_MATRIX &P)`: a procedure that may be used for routine asking for a matrix but the return code is 0, stating that the matrix has not been computed`INTERVAL_MATRIX Hessian_Void(int i1, int i2, INTERVAL_VECTOR &X)`: a procedure that returns an empty (1,1) interval matrix`void Compute_Gradient_Non_Linear_Void(INTERVAL_VECTOR &X,INTERVAL_MATRIX &J)`: a procedure for the simplex algorithm that is empty`INTERVAL_VECTOR ALIAS_Void_Update_Range(double z,INTERVAL_VECTOR &Input)`: a`Range`procedure for the continuation algorithm that just returns`Input`

Jean-Pierre Merlet 2012-12-20