ublas/operation/num_rows.hpp

0001 /**
0002  * -*- c++ -*-
0003  *
0004  * \file num_rows.hpp
0005  *
0006  * \brief The \c num_rows operation.
0007  *
0008  * Copyright (c) 2009-2012, Marco Guazzone
0009  *
0010  * Distributed under the Boost Software License, Version 1.0. (See
0011  * accompanying file LICENSE_1_0.txt or copy at
0012  * http://www.boost.org/LICENSE_1_0.txt)
0013  *
0014  * \author Marco Guazzone, marco.guazzone@gmail.com
0015  */
0016
0017 #ifndef BOOST_NUMERIC_UBLAS_OPERATION_NUM_ROWS_HPP
0018 #define BOOST_NUMERIC_UBLAS_OPERATION_NUM_ROWS_HPP
0019
0020
0021 #include <boost/numeric/ublas/detail/config.hpp>
0022 #include <boost/numeric/ublas/expression_types.hpp>
0023 #include <boost/numeric/ublas/traits.hpp>
0024
0025
0026 namespace boost { namespace numeric { namespace ublas {
0027
0028     /**
0029      * \brief Return the number of rows.
0030      * \tparam MatrixExprT A type which models the matrix expression concept.
0031      * \param m A matrix expression.
0032      * \return The number of rows.
0033      */
0034     template <typename MatrixExprT>
0035     BOOST_UBLAS_INLINE
0036     typename matrix_traits<MatrixExprT>::size_type num_rows(matrix_expression<MatrixExprT> const& me)
0037     {
0038         return me().size1();
0039     }
0040
0041 }}} // Namespace boost::numeric::ublas
0042
0043
0044 #endif // BOOST_NUMERIC_UBLAS_OPERATION_NUM_ROWS_HPP