46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
/**
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* -*- c++ -*-
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*
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* \file num_columns.hpp
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*
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* \brief The \c num_columns operation.
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*
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* Copyright (c) 2009, Marco Guazzone
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*
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* Distributed under the Boost Software License, Version 1.0. (See
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* accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* \author Marco Guazzone, marco.guazzone@gmail.com
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*/
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#ifndef BOOST_NUMERIC_UBLAS_OPERATION_NUM_COLUMNS_HPP
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#define BOOST_NUMERIC_UBLAS_OPERATION_NUM_COLUMNS_HPP
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#include <boost/numeric/ublas/detail/config.hpp>
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#include <boost/numeric/ublas/expression_types.hpp>
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#include <boost/numeric/ublas/traits.hpp>
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namespace boost { namespace numeric { namespace ublas {
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/**
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* \brief Return the number of columns.
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* \tparam MatrixExprT A type which models the matrix expression concept.
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* \param m A matrix expression.
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* \return The number of columns.
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*/
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template <typename MatrixExprT>
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BOOST_UBLAS_INLINE
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typename matrix_traits<MatrixExprT>::size_type num_columns(matrix_expression<MatrixExprT> const& me)
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{
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return me().size2();
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}
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}}} // Namespace boost::numeric::ublas
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#endif // BOOST_NUMERIC_UBLAS_OPERATION_NUM_COLUMNS_HPP
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