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// SPDX-License-Identifier: Apache-2.0
//
// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
// Copyright 2008-2016 National ICT Australia (NICTA)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------
//! \addtogroup op_var
//! @{
class op_var
: public traits_op_xvec
{
public:
template<typename T1>
inline static void apply(Mat<typename T1::pod_type>& out, const mtOp<typename T1::pod_type, T1, op_var>& in);
template<typename in_eT>
inline static void apply_noalias(Mat<typename get_pod_type<in_eT>::result>& out, const Mat<in_eT>& X, const uword norm_type, const uword dim);
//
template<typename eT>
inline static typename get_pod_type<eT>::result var_vec(const subview_col<eT>& X, const uword norm_type = 0);
template<typename eT>
inline static typename get_pod_type<eT>::result var_vec(const subview_row<eT>& X, const uword norm_type = 0);
template<typename T1>
inline static typename T1::pod_type var_vec(const Base<typename T1::elem_type, T1>& X, const uword norm_type = 0);
//
template<typename eT>
inline static eT direct_var(const eT* const X, const uword N, const uword norm_type = 0);
template<typename eT>
inline static eT direct_var_robust(const eT* const X, const uword N, const uword norm_type = 0);
//
template<typename T>
inline static T direct_var(const std::complex<T>* const X, const uword N, const uword norm_type = 0);
template<typename T>
inline static T direct_var_robust(const std::complex<T>* const X, const uword N, const uword norm_type = 0);
};
//! @}
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