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drovector-_dssmatrix.hpp
1 //=============================================================================
3 inline _drovector operator*(const drovector& vec, const _dssmatrix& mat)
4 {
5 #ifdef CPPL_VERBOSE
6  std::cerr << "# [MARK] operator*(const drovector&, const _dssmatrix&)"
7  << std::endl;
8 #endif//CPPL_VERBOSE
9 
10 #ifdef CPPL_DEBUG
11  if(vec.L!=mat.M){
12  std::cerr << "[ERROR] operator*(const drovector&, const _dssmatrix&)"
13  << std::endl
14  << "These vector and matrix can not make a product."
15  << std::endl
16  << "Your input was (" << vec.L << ") * ("
17  << mat.M << "x" << mat.N << ")." << std::endl;
18  exit(1);
19  }
20 #endif//CPPL_DEBUG
21 
22  drovector newvec(mat.N);
23  newvec.zero();
24 
25  for(int c=0; c<mat.VOL; c++){
26  newvec(mat.Jndx[c]) +=vec(mat.Indx[c])*mat.Array[c];
27  }
28 
29  mat.destroy();
30  return _(newvec);
31 }
double * Array
1D array to store non-zero matrix data
Definition: _dssmatrix.hpp:11
(DO NOT USE) Smart-temporary Real Double-precision Sparse Matrix Class
Definition: _dssmatrix.hpp:3
long M
matrix row size
Definition: _dssmatrix.hpp:7
Real Double-precision Row Vector Class.
Definition: drovector.hpp:3
long * Jndx
1D array to store the j-index of non-zero matrix components
Definition: _dssmatrix.hpp:13
(DO NOT USE) Smart-temporary Real Double-precision Row Vector Class
Definition: _drovector.hpp:3
long VOL
the number of non-zero components
Definition: _dssmatrix.hpp:10
friend _drovector operator*(const drovector &, const dgematrix &)
Definition: drovector-dgematrix.hpp:3
long N
matrix column size
Definition: _dssmatrix.hpp:8
long * Indx
1D array to store the i-index of non-zero matrix components
Definition: _dssmatrix.hpp:12
void destroy() const
Definition: _dssmatrix-misc.hpp:3