If iprint≥0, you must supply monit which is suitable for monitoring the minimization process. monit must not change the values of any of its parameters.
If iprint<0, a monit with the correct parameter list should still be supplied, although it will not be called.

Syntax

C#
public delegate void E04LB_MONIT(
	int n,
	double[] xc,
	double fc,
	double[] gc,
	int[] istate,
	double gpjnrm,
	double cond,
	bool posdef,
	int niter,
	int nf
)
Visual Basic
Public Delegate Sub E04LB_MONIT ( _
	n As Integer, _
	xc As Double(), _
	fc As Double, _
	gc As Double(), _
	istate As Integer(), _
	gpjnrm As Double, _
	cond As Double, _
	posdef As Boolean, _
	niter As Integer, _
	nf As Integer _
)
Visual C++
public delegate void E04LB_MONIT(
	int n, 
	array<double>^ xc, 
	double fc, 
	array<double>^ gc, 
	array<int>^ istate, 
	double gpjnrm, 
	double cond, 
	bool posdef, 
	int niter, 
	int nf
)
F#
type E04LB_MONIT = 
    delegate of 
        n : int * 
        xc : float[] * 
        fc : float * 
        gc : float[] * 
        istate : int[] * 
        gpjnrm : float * 
        cond : float * 
        posdef : bool * 
        niter : int * 
        nf : int -> unit

Parameters

n
Type: System..::..Int32
On entry: the number n of variables.
xc
Type: array<System..::..Double>[]()[][]
On entry: the coordinates of the current point x.
fc
Type: System..::..Double
On entry: the value of Fx at the current point x.
gc
Type: array<System..::..Double>[]()[][]
On entry: the value of ∂F∂xj at the current point x, for j=1,2,…,n.
istate
Type: array<System..::..Int32>[]()[][]
On entry: information about which variables are currently fixed on their bounds and which are free.
If istate[j-1] is negative, xj is currently:
– fixed on its upper bound if istate[j-1]=-1;
– fixed on its lower bound if istate[j-1]=-2;
– effectively a constant (i.e., lj=uj) if istate[j-1]=-3.
If istate is positive, its value gives the position of xj in the sequence of free variables.
gpjnrm
Type: System..::..Double
On entry: the Euclidean norm of the projected gradient vector gz.
cond
Type: System..::..Double
On entry: the ratio of the largest to the smallest elements of the diagonal factor D of the projected Hessian matrix (see specification of h). This quantity is usually a good estimate of the condition number of the projected Hessian matrix. (If no variables are currently free, cond is set to zero.)
posdef
Type: System..::..Boolean
On entry: is set true or false according to whether the second derivative matrix for the current subspace, H, is positive definite or not.
niter
Type: System..::..Int32
On entry: the number of iterations (as outlined in []) which have been performed by e04lb so far.
nf
Type: System..::..Int32
On entry: the number of times that funct has been called so far. Thus nf is the number of function and gradient evaluations made so far.

See Also