AbstractLinAlgPack_sparse_bounds_diff.cpp

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00003 // 
00004 // Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
00005 //                  Copyright (2003) Sandia Corporation
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00028 
00029 #include "AbstractLinAlgPack_sparse_bounds_diff.hpp"
00030 #include "AbstractLinAlgPack/src/AbstractLinAlgPack_SpVectorClass.hpp"
00031 #include "AbstractLinAlgPack_LinAlgOpPackHack.hpp"
00032 #include "DenseLinAlgPack_AssertOp.hpp"
00033 
00034 void AbstractLinAlgPack::imp_sparse_bnd_diff(
00035     int           sign
00036   , const SpVectorSlice   &sv
00037   , BLAS_Cpp::Uplo      uplo
00038   , const DVectorSlice      &v
00039   , DVectorSlice        *r
00040   )
00041 {
00042   DenseLinAlgPack::Vp_V_assert_sizes(r->size(),sv.size());
00043   DenseLinAlgPack::VopV_assert_sizes(sv.size(),v.size());
00044 
00045   typedef DenseLinAlgPack::value_type value_type;
00046   const value_type
00047     inf = std::numeric_limits<value_type>::max();
00048   *r = ( uplo == BLAS_Cpp::upper ? inf : -inf );
00049   const AbstractLinAlgPack::SpVectorSlice::difference_type o = sv.offset();
00050   for( AbstractLinAlgPack::SpVectorSlice::const_iterator itr = sv.begin();
00051       itr != sv.end(); ++itr )
00052   {
00053     (*r)(itr->indice() + o) = itr->value();
00054   }
00055   DenseLinAlgPack::Vp_StV( r, -1.0, v );
00056   if( sign < 0 )
00057     DenseLinAlgPack::Vt_S( r, -1.0 );
00058 }

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