class TQpVar: public TObject

 Default constructor

 Constructor

 Constructor

 Copy constructor

 compute complementarity gap, obtained by taking the inner product of the
 complementary vectors and dividing by the total number of components
 computes mu = (t'lambda +u'pi + v'gamma + w'phi)/(mclow+mcupp+nxlow+nxupp)

 Compute the complementarity gap resulting from a step of length "alpha" along
 direction "step"

 Perform a "saxpy" operation on all data vectors : x += alpha*y

 Perform a "negate" operation on all data vectors : x =  -x

 calculate the largest alpha in (0,1] such that the/ nonnegative variables stay
 nonnegative in the given search direction. In the general QP problem formulation
 this is the largest value of alpha such that
     (t,u,v,w,lambda,pi,phi,gamma) + alpha * (b->t,b->u,b->v,b->w,b->lambda,b->pi,
                                                b->phi,b->gamma) >= 0.

 Find the maximum stepsize of v in direction dir
 before violating the nonnegativity constraints

 Is the current position an interior point  ?

 Performs the same function as StepBound, and supplies additional information about
 which component of the nonnegative variables is responsible for restricting alpha.
 In terms of the abstract formulation, the components have the following meanings :

  primalValue   : the value of the blocking component of the primal variables (u,t,v,w).
  primalStep    : the corresponding value of the blocking component of the primal step
                  variables (b->u,b->t,b->v,b->w)
  dualValue     : the value of the blocking component of the dual variables
                  (lambda,pi,phi,gamma).
  dualStep      : the corresponding value of the blocking component of the dual step
                   variables (b->lambda,b->pi,b->phi,b->gamma)
  firstOrSecond : 1 if the primal step is blocking,
                  2 if the dual step is block,
                  0 if no step is blocking.

 See other FindBlocking function

 See FindBlocking function

 Sets components of (u,t,v,w) to alpha and of (lambda,pi,phi,gamma) to beta

 The amount by which the current variables violate the  non-negativity constraints.

 Add alpha to components of (u,t,v,w) and beta to components of (lambda,pi,phi,gamma)

 Print class members

 Return the sum of the vector-norm1's

 Return the sum of the vector-normInf's

 Check that the variables conform to the non-zero indices

 Assignment operator