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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/testsuite/util/statistic/result_recorder.hpp | |
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Diffstat (limited to 'libstdc++-v3/testsuite/util/statistic/result_recorder.hpp')
-rw-r--r-- | libstdc++-v3/testsuite/util/statistic/result_recorder.hpp | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/util/statistic/result_recorder.hpp b/libstdc++-v3/testsuite/util/statistic/result_recorder.hpp new file mode 100644 index 000000000..fd638e22e --- /dev/null +++ b/libstdc++-v3/testsuite/util/statistic/result_recorder.hpp @@ -0,0 +1,98 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License as published by the Free Software +// Foundation; either version 3, or (at your option) any later +// version. + +// This library is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. + +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING3. If not see +// <http://www.gnu.org/licenses/>. + + +// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. + +// Permission to use, copy, modify, sell, and distribute this software +// is hereby granted without fee, provided that the above copyright +// notice appears in all copies, and that both that copyright notice +// and this permission notice appear in supporting documentation. None +// of the above authors, nor IBM Haifa Research Laboratories, make any +// representation about the suitability of this software for any +// purpose. It is provided "as is" without express or implied +// warranty. + +/** + * @file result_recorder.hpp + * Contains a class for recording results + */ + +#ifndef PB_DS_RES_RECORDER_HPP +#define PB_DS_RES_RECORDER_HPP + +#include <statistic/sample_mean.hpp> +#include <statistic/sample_variance.hpp> +#include <statistic/sample_mean_confidence_checker.hpp> + +namespace __gnu_pbds +{ + namespace test + { + namespace detail + { + /* + * Records results until the probability that the sample mean is 10% away + * from the true mean is ~ 0.05. + */ + template<typename Value_Type> + class result_recorder + { + public: + typedef Value_Type value_type; + + result_recorder() + : m_sample_mean(value_type()), m_sample_var(value_type()) + { } + + bool + add_result(value_type res); + + inline value_type + get_sample_mean() const + { return m_sample_mean; } + + private: + typedef std::list<value_type> list_type; + + list_type m_l; + value_type m_sample_mean; + value_type m_sample_var; + }; + + + template<typename Value_Type> + bool + result_recorder<Value_Type>:: + add_result(value_type res) + { + m_l.push_back(res); + m_sample_mean = sample_mean(m_l.begin(), m_l.end()); + m_sample_var = sample_variance(m_l.begin(), m_l.end(), m_sample_mean); + + size_t dist = std::distance(m_l.begin(), m_l.end()); + return sample_mean_confidence_checker(m_sample_mean, m_sample_var, + dist, 0.1); + } + } // namespace detail + } // namespace test +} // namespace __gnu_pbds + +#endif + |