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1 | /** |
2 | * -*- c++ -*- | |
3 | * | |
4 | * \file num_columns.hpp | |
5 | * | |
6 | * \brief The \c num_columns operation. | |
7 | * | |
8 | * Copyright (c) 2009, Marco Guazzone | |
9 | * | |
10 | * Distributed under the Boost Software License, Version 1.0. (See | |
11 | * accompanying file LICENSE_1_0.txt or copy at | |
12 | * http://www.boost.org/LICENSE_1_0.txt) | |
13 | * | |
14 | * \author Marco Guazzone, marco.guazzone@gmail.com | |
15 | */ | |
16 | ||
17 | ||
18 | #ifndef BOOST_NUMERIC_UBLAS_OPERATION_NUM_COLUMNS_HPP | |
19 | #define BOOST_NUMERIC_UBLAS_OPERATION_NUM_COLUMNS_HPP | |
20 | ||
21 | ||
22 | #include <boost/numeric/ublas/detail/config.hpp> | |
23 | #include <boost/numeric/ublas/expression_types.hpp> | |
24 | #include <boost/numeric/ublas/traits.hpp> | |
25 | ||
26 | ||
27 | namespace boost { namespace numeric { namespace ublas { | |
28 | ||
29 | /** | |
30 | * \brief Return the number of columns. | |
31 | * \tparam MatrixExprT A type which models the matrix expression concept. | |
32 | * \param m A matrix expression. | |
33 | * \return The number of columns. | |
34 | */ | |
35 | template <typename MatrixExprT> | |
36 | BOOST_UBLAS_INLINE | |
37 | typename matrix_traits<MatrixExprT>::size_type num_columns(matrix_expression<MatrixExprT> const& me) | |
38 | { | |
39 | return me().size2(); | |
40 | } | |
41 | ||
42 | }}} // Namespace boost::numeric::ublas | |
43 | ||
44 | ||
45 | #endif // BOOST_NUMERIC_UBLAS_OPERATION_NUM_COLUMNS_HPP |