IpVector.hpp

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// Copyright (C) 2004, 2008 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// Authors:  Carl Laird, Andreas Waechter     IBM    2004-08-13
 
#ifndef __IPVECTOR_HPP__
#define __IPVECTOR_HPP__
 
#include "IpTypes.hpp"
#include "IpTaggedObject.hpp"
#include "IpCachedResults.hpp"
#include "IpSmartPtr.hpp"
#include "IpJournalist.hpp"
#include "IpException.hpp"
 
#include <vector>
 
namespace Ipopt
{
 
DECLARE_STD_EXCEPTION(UNIMPLEMENTED_LINALG_METHOD_CALLED);
 
/* forward declarations */
class VectorSpace;
 
class IPOPTLIB_EXPORT Vector: public TaggedObject
{
public:
 
   inline Vector(
      const VectorSpace* owner_space
   );
 
   inline virtual ~Vector();
 
   inline Vector* MakeNew() const;
 
   inline Vector* MakeNewCopy() const;
 
 
   inline void Copy(
      const Vector& x
   );
 
   void Scal(
      Number alpha
   );
 
   inline void Axpy(
      Number        alpha,
      const Vector& x
   );
 
   inline Number Dot(
      const Vector& x
   ) const;
 
   inline Number Nrm2() const;
 
   inline Number Asum() const;
 
   inline Number Amax() const;
 
 
   inline void Set(
      Number alpha
   );
 
   inline void ElementWiseDivide(
      const Vector& x
   );
 
   inline void ElementWiseMultiply(
      const Vector& x
   );
 
   inline void ElementWiseMax(
      const Vector& x
   );
 
   inline void ElementWiseMin(
      const Vector& x
   );
 
   inline void ElementWiseReciprocal();
 
   inline void ElementWiseAbs();
 
   inline void ElementWiseSqrt();
 
   inline void ElementWiseSgn();
 
   inline void AddScalar(
      Number scalar
   );
 
   inline Number Max() const;
 
   inline Number Min() const;
 
   inline Number Sum() const;
 
   inline Number SumLogs() const;
 
 
   inline void AddOneVector(
      Number        a,
      const Vector& v1,
      Number        c
   );
 
   inline void AddTwoVectors(
      Number        a,
      const Vector& v1,
      Number        b,
      const Vector& v2,
      Number        c
   );
 
   inline Number FracToBound(
      const Vector& delta,
      Number        tau
   ) const;
 
   inline void AddVectorQuotient(
      Number        a,
      const Vector& z,
      const Vector& s,
      Number        c
   );
 
   inline bool HasValidNumbers() const;
 
 
   inline Index Dim() const;
 
   inline SmartPtr<const VectorSpace> OwnerSpace() const;
 
 
   void Print(
      SmartPtr<const Journalist> jnlst,
      EJournalLevel              level,
      EJournalCategory           category,
      const std::string&         name,
      Index                      indent = 0,
      const std::string&         prefix = ""
   ) const;
 
   void Print(
      const Journalist&  jnlst,
      EJournalLevel      level,
      EJournalCategory   category,
      const std::string& name,
      Index              indent = 0,
      const std::string& prefix = ""
   ) const;
 
protected:
 
   virtual void CopyImpl(
      const Vector& x
   ) = 0;
 
   virtual void ScalImpl(
      Number alpha
   ) = 0;
 
   virtual void AxpyImpl(
      Number        alpha,
      const Vector& x
   ) = 0;
 
   virtual Number DotImpl(
      const Vector& x
   ) const = 0;
 
   virtual Number Nrm2Impl() const = 0;
 
   virtual Number AsumImpl() const = 0;
 
   virtual Number AmaxImpl() const = 0;
 
   virtual void SetImpl(
      Number alpha
   ) = 0;
 
   virtual void ElementWiseDivideImpl(
      const Vector& x
   ) = 0;
 
   virtual void ElementWiseMultiplyImpl(
      const Vector& x
   ) = 0;
 
   virtual void ElementWiseMaxImpl(
      const Vector& x
   ) = 0;
 
   virtual void ElementWiseMinImpl(
      const Vector& x
   ) = 0;
 
   virtual void ElementWiseReciprocalImpl() = 0;
 
   virtual void ElementWiseAbsImpl() = 0;
 
   virtual void ElementWiseSqrtImpl() = 0;
 
   virtual void ElementWiseSgnImpl() = 0;
 
   virtual void AddScalarImpl(
      Number scalar
   ) = 0;
 
   virtual Number MaxImpl() const = 0;
 
   virtual Number MinImpl() const = 0;
 
   virtual Number SumImpl() const = 0;
 
   virtual Number SumLogsImpl() const = 0;
 
   virtual void AddTwoVectorsImpl(
      Number        a,
      const Vector& v1,
      Number        b,
      const Vector& v2,
      Number        c
   );
 
   virtual Number FracToBoundImpl(
      const Vector& delta,
      Number        tau
   ) const;
 
   virtual void AddVectorQuotientImpl(
      Number        a,
      const Vector& z,
      const Vector& s,
      Number        c
   );
 
   virtual bool HasValidNumbersImpl() const;
 
   virtual void PrintImpl(
      const Journalist&  jnlst,
      EJournalLevel      level,
      EJournalCategory   category,
      const std::string& name,
      Index              indent,
      const std::string& prefix
   ) const = 0;
 
private:
 
   Vector();
 
   Vector(
      const Vector&
   );
 
   Vector& operator=(
      const Vector&
   );
 
   const SmartPtr<const VectorSpace> owner_space_;
 
 
   mutable CachedResults<Number> dot_cache_;
 
   mutable TaggedObject::Tag nrm2_cache_tag_;
   mutable Number cached_nrm2_;
 
   mutable TaggedObject::Tag asum_cache_tag_;
   mutable Number cached_asum_;
 
   mutable TaggedObject::Tag amax_cache_tag_;
   mutable Number cached_amax_;
 
   mutable TaggedObject::Tag max_cache_tag_;
   mutable Number cached_max_;
 
   mutable TaggedObject::Tag min_cache_tag_;
   mutable Number cached_min_;
 
   mutable TaggedObject::Tag sum_cache_tag_;
   mutable Number cached_sum_;
 
   mutable TaggedObject::Tag sumlogs_cache_tag_;
   mutable Number cached_sumlogs_;
 
   mutable TaggedObject::Tag valid_cache_tag_;
   mutable bool cached_valid_;
 
   //     AW: I removed this cache since it gets in the way for the
   //         quality function search
   //     /** Cache for FracToBound */
   //     mutable CachedResults<Number> frac_to_bound_cache_;
 
};
 
class IPOPTLIB_EXPORT VectorSpace: public ReferencedObject
{
public:
 
   VectorSpace(
      Index dim
   );
 
   virtual ~VectorSpace()
   { }
 
   virtual Vector* MakeNew() const = 0;
 
   Index Dim() const
   {
      return dim_;
   }
 
private:
 
   VectorSpace();
 
   VectorSpace(
      const VectorSpace&
   );
 
   VectorSpace& operator=(
      const VectorSpace&
   );
 
   const Index dim_;
};
 
/* inline methods */
inline Vector::~Vector()
{ }
 
inline Vector::Vector(
   const VectorSpace* owner_space
)
   : TaggedObject(),
     owner_space_(owner_space),
     dot_cache_(10),
     nrm2_cache_tag_(0),
     asum_cache_tag_(0),
     amax_cache_tag_(0),
     max_cache_tag_(0),
     min_cache_tag_(0),
     sum_cache_tag_(0),
     sumlogs_cache_tag_(0),
     cached_valid_(0)
{
   DBG_ASSERT(IsValid(owner_space_));
}
 
inline Vector* Vector::MakeNew() const
{
   return owner_space_->MakeNew();
}
 
inline Vector* Vector::MakeNewCopy() const
{
   // ToDo: We can probably copy also the cached values for Norms etc here
   Vector* copy = MakeNew();
   copy->Copy(*this);
   return copy;
}
 
inline void Vector::Copy(
   const Vector& x
)
{
   CopyImpl(x);
   ObjectChanged();
   // Also copy any cached scalar values from the original vector
   // ToDo: Check if that is too much overhead
   TaggedObject::Tag x_tag = x.GetTag();
   if( x_tag == x.nrm2_cache_tag_ )
   {
      nrm2_cache_tag_ = GetTag();
      cached_nrm2_ = x.cached_nrm2_;
   }
   if( x_tag == x.asum_cache_tag_ )
   {
      asum_cache_tag_ = GetTag();
      cached_asum_ = x.cached_asum_;
   }
   if( x_tag == x.amax_cache_tag_ )
   {
      amax_cache_tag_ = GetTag();
      cached_amax_ = x.cached_amax_;
   }
   if( x_tag == x.max_cache_tag_ )
   {
      max_cache_tag_ = GetTag();
      cached_max_ = x.cached_max_;
   }
   if( x_tag == x.min_cache_tag_ )
   {
      min_cache_tag_ = GetTag();
      cached_min_ = x.cached_min_;
   }
   if( x_tag == x.sum_cache_tag_ )
   {
      sum_cache_tag_ = GetTag();
      cached_sum_ = x.cached_sum_;
   }
   if( x_tag == x.sumlogs_cache_tag_ )
   {
      sumlogs_cache_tag_ = GetTag();
      cached_sumlogs_ = x.cached_sumlogs_;
   }
}
 
inline void Vector::Axpy(
   Number        alpha,
   const Vector& x
)
{
   AxpyImpl(alpha, x);
   ObjectChanged();
}
 
inline Number Vector::Dot(
   const Vector& x
) const
{
   // The current implementation of the caching doesn't allow to have
   // a dependency of something with itself.  Therefore, we use the
   // Nrm2 method if the dot product is to be taken with the vector
   // itself.  Might be more efficient anyway.
   if( this == &x )
   {
      Number nrm2 = Nrm2();
      return nrm2 * nrm2;
   }
   Number retValue;
   if( !dot_cache_.GetCachedResult2Dep(retValue, this, &x) )
   {
      retValue = DotImpl(x);
      dot_cache_.AddCachedResult2Dep(retValue, this, &x);
   }
   return retValue;
}
 
inline Number Vector::Nrm2() const
{
   if( nrm2_cache_tag_ != GetTag() )
   {
      cached_nrm2_ = Nrm2Impl();
      nrm2_cache_tag_ = GetTag();
   }
   return cached_nrm2_;
}
 
inline Number Vector::Asum() const
{
   if( asum_cache_tag_ != GetTag() )
   {
      cached_asum_ = AsumImpl();
      asum_cache_tag_ = GetTag();
   }
   return cached_asum_;
}
 
inline Number Vector::Amax() const
{
   if( amax_cache_tag_ != GetTag() )
   {
      cached_amax_ = AmaxImpl();
      amax_cache_tag_ = GetTag();
   }
   return cached_amax_;
}
 
inline Number Vector::Sum() const
{
   if( sum_cache_tag_ != GetTag() )
   {
      cached_sum_ = SumImpl();
      sum_cache_tag_ = GetTag();
   }
   return cached_sum_;
}
 
inline Number Vector::SumLogs() const
{
   if( sumlogs_cache_tag_ != GetTag() )
   {
      cached_sumlogs_ = SumLogsImpl();
      sumlogs_cache_tag_ = GetTag();
   }
   return cached_sumlogs_;
}
 
inline void Vector::ElementWiseSgn()
{
   ElementWiseSgnImpl();
   ObjectChanged();
}
 
inline void Vector::Set(
   Number alpha
)
{
   // Could initialize caches here
   SetImpl(alpha);
   ObjectChanged();
}
 
inline void Vector::ElementWiseDivide(
   const Vector& x
)
{
   ElementWiseDivideImpl(x);
   ObjectChanged();
}
 
inline void Vector::ElementWiseMultiply(
   const Vector& x
)
{
   ElementWiseMultiplyImpl(x);
   ObjectChanged();
}
 
inline void Vector::ElementWiseReciprocal()
{
   ElementWiseReciprocalImpl();
   ObjectChanged();
}
 
inline void Vector::ElementWiseMax(
   const Vector& x
)
{
   // Could initialize some caches here
   ElementWiseMaxImpl(x);
   ObjectChanged();
}
 
inline void Vector::ElementWiseMin(
   const Vector& x
)
{
   // Could initialize some caches here
   ElementWiseMinImpl(x);
   ObjectChanged();
}
 
inline void Vector::ElementWiseAbs()
{
   // Could initialize some caches here
   ElementWiseAbsImpl();
   ObjectChanged();
}
 
inline void Vector::ElementWiseSqrt()
{
   ElementWiseSqrtImpl();
   ObjectChanged();
}
 
inline void Vector::AddScalar(
   Number scalar)
{
   // Could initialize some caches here
   AddScalarImpl(scalar);
   ObjectChanged();
}
 
inline Number Vector::Max() const
{
   if( max_cache_tag_ != GetTag() )
   {
      cached_max_ = MaxImpl();
      max_cache_tag_ = GetTag();
   }
   return cached_max_;
}
 
inline Number Vector::Min() const
{
   if( min_cache_tag_ != GetTag() )
   {
      cached_min_ = MinImpl();
      min_cache_tag_ = GetTag();
   }
   return cached_min_;
}
 
inline void Vector::AddOneVector(
   Number        a,
   const Vector& v1,
   Number        c
)
{
   AddTwoVectors(a, v1, 0., v1, c);
}
 
inline void Vector::AddTwoVectors(
   Number        a,
   const Vector& v1,
   Number        b,
   const Vector& v2,
   Number        c
)
{
   AddTwoVectorsImpl(a, v1, b, v2, c);
   ObjectChanged();
}
 
inline Number Vector::FracToBound(
   const Vector& delta,
   Number        tau
) const
{
   /* AW: I avoid the caching here, since it leads to overhead in the
    quality function search.  Caches for this are in
    CalculatedQuantities.
    Number retValue;
    std::vector<const TaggedObject*> tdeps(1);
    tdeps[0] = &delta;
    std::vector<Number> sdeps(1);
    sdeps[0] = tau;
    if (!frac_to_bound_cache_.GetCachedResult(retValue, tdeps, sdeps)) {
    retValue = FracToBoundImpl(delta, tau);
    frac_to_bound_cache_.AddCachedResult(retValue, tdeps, sdeps);
    }
    return retValue;
    */
   return FracToBoundImpl(delta, tau);
}
 
inline void Vector::AddVectorQuotient(
   Number        a,
   const Vector& z,
   const Vector& s,
   Number        c
)
{
   AddVectorQuotientImpl(a, z, s, c);
   ObjectChanged();
}
 
inline bool Vector::HasValidNumbers() const
{
   if( valid_cache_tag_ != GetTag() )
   {
      cached_valid_ = HasValidNumbersImpl();
      valid_cache_tag_ = GetTag();
   }
   return cached_valid_;
}
 
inline Index Vector::Dim() const
{
   return owner_space_->Dim();
}
 
inline SmartPtr<const VectorSpace> Vector::OwnerSpace() const
{
   return owner_space_;
}
 
inline VectorSpace::VectorSpace(
   Index dim
)
   : dim_(dim)
{ }
 
} // namespace Ipopt
 
// Macro definitions for debugging vectors
#if IPOPT_VERBOSITY == 0
# define DBG_PRINT_VECTOR(__verbose_level, __vec_name, __vec)
#else
# define DBG_PRINT_VECTOR(__verbose_level, __vec_name, __vec) \
   if (dbg_jrnl.Verbosity() >= (__verbose_level)) { \
      if (dbg_jrnl.Jnlst()!=NULL) { \
        (__vec).Print(dbg_jrnl.Jnlst(), \
        J_ERROR, J_DBG, \
        __vec_name, \
        dbg_jrnl.IndentationLevel()*2, \
        "# "); \
      } \
   }
#endif //if IPOPT_VERBOSITY == 0
 
#endif