I found these definitions within symmetric_tensor.h. How can I access them?
They seem to allow output for my case.
/**
* Output operator for symmetric tensors of rank 2. Print the elements
* consecutively, with a space in between, two spaces between rank 1
* subtensors, three between rank 2 and so on. No special amends are made to
* represents the symmetry in the output, for example by outputting only the
* unique entries.
*
* @relates SymmetricTensor
*/
template <int dim, typename Number>
inline
std::ostream &operator << (std::ostream &out,
const SymmetricTensor<2,dim,Number> &t)
{
//make out lives a bit simpler by outputing
//the tensor through the operator for the
//general Tensor class
Tensor<2,dim,Number> tt;
for (unsigned int i=0; i<dim; ++i)
for (unsigned int j=0; j<dim; ++j)
tt[i][j] = t[i][j];
return out << tt;
}
/**
* Output operator for symmetric tensors of rank 4. Print the elements
* consecutively, with a space in between, two spaces between rank 1
* subtensors, three between rank 2 and so on. No special amends are made to
* represents the symmetry in the output, for example by outputting only the
* unique entries.
*
* @relates SymmetricTensor
*/
template <int dim, typename Number>
inline
std::ostream &operator << (std::ostream &out,
const SymmetricTensor<4,dim,Number> &t)
{
//make out lives a bit simpler by outputing
//the tensor through the operator for the
//general Tensor class
Tensor<4,dim,Number> tt;
for (unsigned int i=0; i<dim; ++i)
for (unsigned int j=0; j<dim; ++j)
for (unsigned int k=0; k<dim; ++k)
for (unsigned int l=0; l<dim; ++l)
tt[i][j][k][l] = t[i][j][k][l];
return out << tt;
}
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