void ExampleNLPFirstOrder::imp_calc_Gc(
const Vector& x, bool newx, const FirstOrderInfo& first_order_info) const
{
namespace rcp = MemMngPack;
using Teuchos::dyn_cast;
using AbstractLinAlgPack::Vp_S; // Should not have to do this!
const index_type
n = this->n(),
m = this->m();
const Range1D
var_dep = this->var_dep(),
var_indep = this->var_indep();
// Get references to aggregate C and N matrices (if allocated)
MatrixOpNonsing
*C_aggr = NULL;
MatrixOp
*N_aggr = NULL;
BasisSystemComposite::get_C_N(
first_order_info.Gc, &C_aggr, &N_aggr ); // Will return NULLs if Gc is not initialized
// Allocate C and N matrix objects if not done yet!
Teuchos::RCP<MatrixOpNonsing>
C_ptr = Teuchos::null;
Teuchos::RCP<MatrixOp>
N_ptr = Teuchos::null;
if( C_aggr == NULL ) {
const VectorSpace::space_ptr_t
space_x = this->space_x(),
space_xD = space_x->sub_space(var_dep);
C_ptr = Teuchos::rcp(new MatrixSymDiagStd(space_xD->create_member()));
N_ptr = Teuchos::rcp(new MatrixSymDiagStd(space_xD->create_member()));
C_aggr = C_ptr.get();
N_aggr = N_ptr.get();
}
// Get references to concreate C and N matrices
MatrixSymDiagStd
&C = dyn_cast<MatrixSymDiagStd>(*C_aggr);
MatrixSymDiagStd
&N = dyn_cast<MatrixSymDiagStd>(*N_aggr);
// Get x = [ x_D' x_I ]
Vector::vec_ptr_t
x_D = x.sub_view(var_dep),
x_I = x.sub_view(var_indep);
// Set the diagonals of C and N (this is the only computation going on here)
C.diag() = *x_I; // C.diag = x_I - 1.0
Vp_S( &C.diag(), -1.0 ); // ...
N.diag() = *x_D; // N.diag = x_D - 10.0
Vp_S( &N.diag(), -10.0 ); // ...
// Initialize the matrix object Gc if not done so yet
if( C_ptr.get() != NULL ) {
BasisSystemComposite::initialize_Gc(
this->space_x(), var_dep, var_indep
,this->space_c()
,C_ptr, N_ptr
,first_order_info.Gc
);
}
}
void MeritFuncNLPModL1::set_space_c( const VectorSpace::space_ptr_t& space_c )
{
mu_ = space_c->create_member();
*mu_ = 0.0;
}