forked from boostorg/algorithm
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
/*
|
|
Copyright (c) Marshall Clow 2008-2012.
|
|
|
|
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
*/
|
|
|
|
/// \file iota.hpp
|
|
/// \brief Generate an increasing series
|
|
/// \author Marshall Clow
|
|
|
|
#ifndef BOOST_ALGORITHM_IOTA_HPP
|
|
#define BOOST_ALGORITHM_IOTA_HPP
|
|
|
|
#include <boost/config.hpp>
|
|
#include <boost/range/begin.hpp>
|
|
#include <boost/range/end.hpp>
|
|
|
|
namespace boost { namespace algorithm {
|
|
|
|
/// \fn iota ( ForwardIterator first, ForwardIterator last, T value )
|
|
/// \brief Generates an increasing sequence of values, and stores them in [first, last)
|
|
///
|
|
/// \param first The start of the input sequence
|
|
/// \param last One past the end of the input sequence
|
|
/// \param value The initial value of the sequence to be generated
|
|
/// \note This function is part of the C++2011 standard library.
|
|
template <typename ForwardIterator, typename T>
|
|
BOOST_CXX14_CONSTEXPR void iota ( ForwardIterator first, ForwardIterator last, T value )
|
|
{
|
|
for ( ; first != last; ++first, ++value )
|
|
*first = value;
|
|
}
|
|
|
|
/// \fn iota ( Range &r, T value )
|
|
/// \brief Generates an increasing sequence of values, and stores them in the input Range.
|
|
///
|
|
/// \param r The input range
|
|
/// \param value The initial value of the sequence to be generated
|
|
///
|
|
template <typename Range, typename T>
|
|
BOOST_CXX14_CONSTEXPR void iota ( Range &r, T value )
|
|
{
|
|
boost::algorithm::iota (boost::begin(r), boost::end(r), value);
|
|
}
|
|
|
|
|
|
/// \fn iota_n ( OutputIterator out, T value, std::size_t n )
|
|
/// \brief Generates an increasing sequence of values, and stores them in the input Range.
|
|
///
|
|
/// \param out An output iterator to write the results into
|
|
/// \param value The initial value of the sequence to be generated
|
|
/// \param n The number of items to write
|
|
///
|
|
template <typename OutputIterator, typename T>
|
|
BOOST_CXX14_CONSTEXPR OutputIterator iota_n ( OutputIterator out, T value, std::size_t n )
|
|
{
|
|
for ( ; n > 0; --n, ++value )
|
|
*out++ = value;
|
|
|
|
return out;
|
|
}
|
|
|
|
}}
|
|
|
|
#endif // BOOST_ALGORITHM_IOTA_HPP
|