AbstractLinAlgPack_SpVectorOp.hpp

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// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
//                  Copyright (2003) Sandia Corporation
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#ifndef SP_VECTOR_OP_H
#define SP_VECTOR_OP_H

#include "AbstractLinAlgPack_SparseVectorSliceOp.hpp"
#include "AbstractLinAlgPack_SparseElement.hpp"

namespace AbstractLinAlgPack {

void add_elements( SpVector* sv_lhs, value_type alpha, const DVectorSlice& vs_rhs
           , size_type offset = 0, bool add_zeros = true );

void add_elements( SpVector* sv_lhs, value_type alpha, const SpVectorSlice& sv_rhs
           , size_type offset = 0, bool add_zeros = true );

inline
DVectorSlice dense_view( SpVectorSlice& sv_rhs );

inline
const DVectorSlice dense_view( const SpVectorSlice& sv_rhs );

} // end namespace AbstractLinAlgPack

// /////////////////////////////////////////
// Inline function definitions

inline
DenseLinAlgPack::DVectorSlice
AbstractLinAlgPack::dense_view( SpVectorSlice& sv_rhs )
{
  return sv_rhs.nz()
    ? DVectorSlice( &sv_rhs.begin()->value(), sv_rhs.nz(), 2 )
    : DVectorSlice( NULL, 0, 0 );
}

inline
const DenseLinAlgPack::DVectorSlice
AbstractLinAlgPack::dense_view( const SpVectorSlice& sv_rhs )
{
  return sv_rhs.nz()
    ? DVectorSlice( &const_cast<SpVectorSlice&>(sv_rhs).begin()->value(), sv_rhs.nz(), 2 )
    : DVectorSlice( NULL, 0, 0 );
}

#endif // SP_VECTOR_CLASS_H