libstdc++-v3/testsuite/26_numerics/random/discrete_distribution/cons/default.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-cstdint "" }
   3 //
   4 // 2008-12-03  Edward M. Smith-Rowland <3dw4rd@verizon.net>
   5 //
   6 // Copyright (C) 2008-2018 Free Software Foundation, Inc.
   7 //
   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)
  12 // any later version.
  13 //
  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.
  18 //
  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/>.
  22
  23 // C++11
  24 // 26.5.8.6.1 Class template discrete_distribution [rand.dist.samp.discrete]
  25 // 26.5.1.6 random number distribution requirements [rand.req.dist]
  26
  27 #include <random>
  28 #include <testsuite_hooks.h>
  29 #include <testsuite_common_types.h>
  30
  31 void
  32 test01()
  33 {
  34   std::discrete_distribution<> u;
  35   std::vector<double> probablility = u.probabilities();
  36   VERIFY( probablility.size() == 1 );
  37   VERIFY( probablility[0] == 1.0 );
  38 }
  39
  40 void
  41 test02()
  42 {
  43   __gnu_test::implicitly_default_constructible test;
  44   test.operator()<std::discrete_distribution<>>();
  45   test.operator()<std::discrete_distribution<>::param_type>();
  46 }
  47
  48 int main()
  49 {
  50   test01();
  51   test02();
  52 }