1 // { dg-do run { target c++11 } }
2 // { dg-require-cstdint "" }
4 // 2008-12-03 Edward M. Smith-Rowland <3dw4rd@verizon.net>
6 // Copyright (C) 2008-2020 Free Software Foundation, Inc.
8 // This file is part of the GNU ISO C++ Library. This library is free
9 // software; you can redistribute it and/or modify it under the
10 // terms of the GNU General Public License as published by the
11 // Free Software Foundation; either version 3, or (at your option)
14 // This library is distributed in the hope that it will be useful,
15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 // GNU General Public License for more details.
19 // You should have received a copy of the GNU General Public License along
20 // with this library; see the file COPYING3. If not see
21 // <http://www.gnu.org/licenses/>.
23 // 26.4.8.5.2 Class template piecewise_constant_distribution [rand.dist.samp.pconst]
24 // 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist]
27 #include <testsuite_hooks.h>
32 std::vector
<double> x
= {0.0, 1.0, 2.0, 3.0, 4.0, 5.0};
33 std::vector
<double> wt
= {0.5, 1.0, 2.5, 1.5, 0.5};
34 std::piecewise_constant_distribution
<> u(x
.begin(), x
.end(), wt
.begin());
35 std::vector
<double> interval
= u
.intervals();
36 std::vector
<double> density
= u
.densities();
37 VERIFY( interval
.size() == 6 );
38 VERIFY( interval
[0] == 0.0 );
39 VERIFY( interval
[5] == 5.0 );
40 VERIFY( density
.size() == 5 );
41 VERIFY( density
[0] == 0.5 / 6.0 );
42 VERIFY( density
[2] == 2.5 / 6.0 );