ConstrainedOptPack_MeritFuncCalc1DQuadratic.cpp

Go to the documentation of this file.
00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 // Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
00005 //                  Copyright (2003) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #include "ConstrainedOptPack_MeritFuncCalc1DQuadratic.hpp"
00030 #include "ConstrainedOptPack_MeritFuncCalc.hpp"
00031 #include "AbstractLinAlgPack_VectorMutable.hpp"
00032 #include "AbstractLinAlgPack_VectorStdOps.hpp"
00033 #include "Teuchos_TestForException.hpp"
00034 
00035 namespace ConstrainedOptPack {
00036 
00037 MeritFuncCalc1DQuadratic::MeritFuncCalc1DQuadratic(
00038   const MeritFuncCalc&      phi
00039   ,size_type                p
00040   ,const_VectorWithOp_ptr   d[]
00041   ,VectorMutable*     x
00042   )
00043   : phi_(phi), p_(p), x_(x)
00044 {
00045   TEST_FOR_EXCEPTION(
00046     !(1 <= p && p <= 2 ), std::invalid_argument
00047     ,"MeritFuncCalc1DQuadratic::MeritFuncCalc1DQuadratic(...) : Error! "
00048     "p = " << p << " must be in the range 1 <= p <= 2"
00049     );
00050   for( size_type i = 0; i <= p; ++i )
00051     d_[i] = d[i];
00052 }
00053 
00054 value_type MeritFuncCalc1DQuadratic::operator()(value_type alpha) const
00055 {
00056   using AbstractLinAlgPack::Vp_StV;
00057   *x_ = *d_[0];
00058   value_type alpha_i = alpha;
00059   for( size_type i = 1; i <= p_; ++i, alpha_i *= alpha ) {
00060     Vp_StV( x_, alpha_i, *d_[i] );
00061   }
00062   return phi_( *x_ );
00063 }
00064 
00065 value_type  MeritFuncCalc1DQuadratic::deriv() const
00066 {
00067   return phi_.deriv();
00068 }
00069 
00070 void MeritFuncCalc1DQuadratic::print_merit_func(
00071   std::ostream& out, const std::string& L
00072   ) const
00073 {
00074   out << L << "*** MeritFuncCalc1DQuadratic\n"
00075     << L << "x = xo + alpha*d[1] + alpha^2*d[2]\n";
00076   phi_.print_merit_func( out, L );
00077 }
00078 
00079 } // end namespace ConstrainedOptPack
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines
Generated on Wed Apr 13 10:10:58 2011 for MOOCHO (Single Doxygen Collection) by  doxygen 1.6.3