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_dgsmatrix-_dcovector.hpp File Reference

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Functions

_dcovector operator* (const _dgsmatrix &mat, const _dcovector &vec)

Function Documentation

_dcovector operator* ( const _dgsmatrix mat,
const _dcovector vec 
) [inline]

_dgsmatrix*_dcovector operator

Definition at line 3 of file _dgsmatrix-_dcovector.hpp.

References _(), _dgsmatrix::data, _dgsmatrix::destroy(), _dcovector::destroy(), _dcovector::l, _dgsmatrix::m, _dgsmatrix::n, and dcovector::zero().

{VERBOSE_REPORT;
#ifdef  CPPL_DEBUG
  if(mat.n!=vec.l){
    ERROR_REPORT;
    std::cerr << "These matrix and vector can not make a product." << std::endl
              << "Your input was (" << mat.m << "x" << mat.n << ") * (" << vec.l << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  dcovector newvec(mat.m);
  newvec.zero();
  
  for(std::vector<dcomponent>::const_iterator it=mat.data.begin(); it!=mat.data.end(); it++){
    newvec(it->i) += it->v * vec(it->j);
  }
  
  mat.destroy();
  vec.destroy();
  return _(newvec);
}
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