   }   m_x_tran.transpose(m_x);  }  /*------------------------------------------------*/ void AzTools::filter_include(const AzIntArr *ia_fxs,                                 AzSmat *m_x) {   if (ia_fxs->size()==0) return;    AzSmat m_x_tran;    m_x->transpose(&m_x_tran);    Az