Function tr

src/OpenFOAM/primitives/SymmTensor/SymmTensorI.H:290–293

//- Return the trace of a symmetric tensor
template<class Cmpt>
inline Cmpt tr(const SymmTensor<Cmpt>& st)
{
    return st.xx() + st.yy() + st.zz();
}


//- Return the spherical part of a symmetric tensor