26 template<
typename T>
inline static void direct_cor(
Mat< std::complex<T> >& out,
const Mat< std::complex<T> >& X,
const uword norm_type);
static void apply(Mat< typename T1::elem_type > &out, const Op< T1, op_cor > &in)
static void direct_cor(Mat< eT > &out, const Mat< eT > &X, const uword norm_type)