From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../testsuite/util/statistic/sample_variance.hpp | 81 ++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 libstdc++-v3/testsuite/util/statistic/sample_variance.hpp (limited to 'libstdc++-v3/testsuite/util/statistic/sample_variance.hpp') diff --git a/libstdc++-v3/testsuite/util/statistic/sample_variance.hpp b/libstdc++-v3/testsuite/util/statistic/sample_variance.hpp new file mode 100644 index 000000000..ed61d0b05 --- /dev/null +++ b/libstdc++-v3/testsuite/util/statistic/sample_variance.hpp @@ -0,0 +1,81 @@ +// -*- 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 +// . + + +// 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 sample_variance.hpp + * Contains a function for calculating a sample variance + */ + +#ifndef PB_DS_SAMPLE_VAR_HPP +#define PB_DS_SAMPLE_VAR_HPP + +#include +#include +#include +#include + +namespace __gnu_pbds +{ + namespace test + { + namespace detail + { +#define PB_DS_VTYPE typename std::iterator_traits::value_type + + template + PB_DS_VTYPE + sample_variance(It b, It e, PB_DS_VTYPE sm) + { + PB_DS_VTYPE ss = 0; + size_t num_res = 0; + + while (b != e) + { + const PB_DS_VTYPE d =* b - sm; + ss += d* d; + ++num_res; + ++b; + } + + if (num_res == 1) + return 0; + + return ::sqrt(ss / (num_res - 1)); + } + +#undef PB_DS_VTYPE + + } // namespace detail + } // namespace test +} // namespace __gnu_pbds + +#endif + -- cgit v1.2.3