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MoochoPack_QuasiRangeSpaceStepStd_Strategy.cpp
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41 
42 #include "MoochoPack_QuasiRangeSpaceStepStd_Strategy.hpp"
43 #include "MoochoPack_NLPAlgoState.hpp"
44 #include "AbstractLinAlgPack_MatrixOpNonsing.hpp"
45 #include "AbstractLinAlgPack_VectorSpace.hpp"
46 #include "AbstractLinAlgPack_LinAlgOpPack.hpp"
47 
48 namespace MoochoPack {
49 
51  std::ostream& out, EJournalOutputLevel olevel, NLPAlgo *algo, NLPAlgoState *s
52  ,const Vector& xo, const Vector& c_xo, VectorMutable* v
53  )
54 {
56  using LinAlgOpPack::V_StMtV;
57  const MatrixOpNonsing
58  &R_k = s->R().get_k(0);
59  VectorSpace::vec_mut_ptr_t
60  vy = R_k.space_rows().create_member();
61  // vy = inv(R_k) * c_xo
62  V_InvMtV( vy.get(), R_k, BLAS_Cpp::no_trans, c_xo );
63  // v = -Y_k*vy
64  V_StMtV( v, -1.0, s->Y().get_k(0), BLAS_Cpp::no_trans, *vy );
65 
66  return true;
67 }
68 
69 void QuasiRangeSpaceStepStd_Strategy::print_step( std::ostream& out, const std::string& L ) const
70 {
71  out << L << "*** Compute the approximate range space step:\n"
72  << L << "vy = inv(R_k) * c_xo\n"
73  << L << "v = -Y_k*vy\n";
74 }
75 
76 } // end namespace MoochoPack
rSQP Algorithm control class.
void print_step(std::ostream &out, const std::string &leading_str) const
Reduced space SQP state encapsulation interface.
void V_InvMtV(VectorMutable *v_lhs, const MatrixNonsing &M_rhs1, BLAS_Cpp::Transp trans_rhs1, const Vector &v_rhs2)
bool solve_quasi_range_space_step(std::ostream &out, EJournalOutputLevel olevel, NLPAlgo *algo, NLPAlgoState *s, const Vector &xo, const Vector &c_xo, VectorMutable *v)
Solves the range space problem with the old decomposition at x_k.