For QP problems, you must supply a version of qphx to compute the matrix product

H x

. If

H

has rows and columns consisting entirely of zeros, it is most efficient to order the variables

x = {(y z)}^{T}

so that

H x = (\begin{matrix} H_{1} & 0 \\ 0 & 0 \end{matrix}) (\begin{matrix} y \\ z \end{matrix}) = (\begin{matrix} H_{1} y \\ 0 \end{matrix}),

where the nonlinear variables

y

appear first as shown. For LP problems, qphx will never be called by h02ce.

Syntax

C#
public delegate void H02CE_QPHX( int nstate, int ncolh, double[] x, double[] hx )

Visual Basic
Public Delegate Sub H02CE_QPHX ( _ nstate As Integer, _ ncolh As Integer, _ x As Double(), _ hx As Double() _ )

Visual C++
public delegate void H02CE_QPHX( int nstate, int ncolh, array<double>^ x, array<double>^ hx )

F#
type H02CE_QPHX = delegate of nstate : int * ncolh : int * x : float[] * hx : float[] -> unit

nstate: Type: System..::..Int32
On entry: if $nstate = 1$ , then h02ce is calling qphx for the first time on a sub-problem. This parameter setting allows you to save computation time if certain data must be read or calculated only once.
If $nstate \geq 2$ , then h02ce is calling qphx for the last time. This parameter setting allows you to perform some additional computation on the final sub-problem solution. In general, the last call to qphx is made with $nstate = 2 + ifail$ (see []).

Otherwise, $nstate = 0$ .

ncolh: Type: System..::..Int32
On entry: this is the same parameter ncolh as supplied to h02ce.

x: Type: array<System..::..Double>[]()[][]
On entry: the first ncolh elements of the vector $x$ .

See Also