C++ (Cpp) Vector::copyIn示例

示例#1

文件： LinsysFunctions.cpp 项目： 00liujj/trilinos

void scale_vector(double scalar,
                  fei::Vector& vec)
{
  fei::SharedPtr<fei::VectorSpace> vspace = vec.getVectorSpace();

  int numIndices = vspace->getNumIndices_Owned();
  std::vector<int> indices(numIndices);
  vspace->getIndices_Owned(numIndices, &indices[0], numIndices);

  std::vector<double> coefs(numIndices);

  vec.copyOut(numIndices, &indices[0], &coefs[0]);

  for(size_t j=0; j<coefs.size(); ++j) {
    coefs[j] *= scalar;
  }

  vec.copyIn(numIndices, &indices[0], &coefs[0]);
}