libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/serialize.cc

   1 // { dg-options "-std=c++0x" }
   2 //
   3 // 2008-12-05  Edward M. Smith-Rowland <3dw4rd@verizon.net>
   4 //
   5 // Copyright (C) 2008, 2009 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // 26.4.8.5.2 Class template piecewise_constant_distribution [rand.dist.samp.pconst]
  23 // 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist]
  24
  25 #include <random>
  26 #include <sstream>
  27 #include <testsuite_hooks.h>
  28
  29 void
  30 test01()
  31 {
  32   bool test __attribute__((unused)) = true;
  33
  34   std::stringstream str;
  35   std::vector<double> x = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0};
  36   std::vector<double> wt = {0.5, 1.0, 2.5, 1.5, 0.5};
  37   std::piecewise_constant_distribution<double>
  38      u(x.begin(), x.end(), wt.begin()), v;
  39   std::minstd_rand0 rng;
  40
  41   u(rng); // advance
  42   str << u;
  43
  44   VERIFY( !(u == v) );
  45
  46   str >> v;
  47   VERIFY( u == v );
  48 }
  49
  50 int main()
  51 {
  52   test01();
  53   return 0;
  54 }