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. --- .../cons/initlist_fun.cc | 75 ++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/initlist_fun.cc (limited to 'libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/initlist_fun.cc') diff --git a/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/initlist_fun.cc b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/initlist_fun.cc new file mode 100644 index 000000000..7ae5d89be --- /dev/null +++ b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/initlist_fun.cc @@ -0,0 +1,75 @@ +// { dg-options "-std=c++0x" } +// { dg-require-cstdint "" } +// +// 2008-12-03 Edward M. Smith-Rowland <3dw4rd@verizon.net> +// +// Copyright (C) 2008, 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 +// . + +// 26.4.8.5.2 Class template piecewise_constant_distribution +// [rand.dist.samp.pconst] +// 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist] + +#include +#include +#include + +struct cosine_distribution +{ + cosine_distribution(double x0, double lambda) + : _M_x0(x0), _M_lambda(lambda) + { } + + double + operator()(double x) + { + if (x - _M_x0 < -_M_lambda / 4) + return 0.0; + else if (x - _M_x0 > _M_lambda / 4) + return 0.0; + else + { + const double pi = 3.14159265358979323846; + return std::cos(2 * pi * (x - _M_x0) / _M_lambda); + } + } + +private: + double _M_x0; + double _M_lambda; +}; + +void +test01() +{ + bool test __attribute__((unused)) = true; + + cosine_distribution cd(1.5, 3.0); + std::piecewise_constant_distribution<> u({-10.0, -8.0, -6.0, -4.0, -2.0, + 0.0, 2.0, 4.0, 6.0, 8.0, 10.0}, + cd); + std::vector interval = u.intervals(); + std::vector density = u.densities(); + VERIFY( interval.size() == 11 ); + VERIFY( density.size() == 10 ); +} + +int main() +{ + test01(); + return 0; +} -- cgit v1.2.3