| // { dg-do run { target c++11 } } |
| // { dg-require-cstdint "" } |
| // |
| // 2008-12-03 Edward M. Smith-Rowland <3dw4rd@verizon.net> |
| // |
| // Copyright (C) 2008-2023 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/>. |
| |
| // 26.4.8.5.2 Class template piecewise_constant_distribution [rand.dist.samp.pconst] |
| // 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist] |
| |
| #include <random> |
| #include <testsuite_hooks.h> |
| |
| void |
| test01() |
| { |
| std::vector<double> x = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0}; |
| std::vector<double> wt = {0.5, 1.0, 2.5, 1.5, 0.5}; |
| std::piecewise_constant_distribution<> u(x.begin(), x.end(), wt.begin()); |
| std::vector<double> interval = u.intervals(); |
| std::vector<double> density = u.densities(); |
| VERIFY( interval.size() == 6 ); |
| VERIFY( interval[0] == 0.0 ); |
| VERIFY( interval[5] == 5.0 ); |
| VERIFY( density.size() == 5 ); |
| VERIFY( density[0] == double(0.5 / 6.0) ); |
| VERIFY( density[2] == double(2.5 / 6.0) ); |
| } |
| |
| int main() |
| { |
| test01(); |
| return 0; |
| } |
