libstdc++-v3/testsuite/26_numerics/random/uniform_int_distribution/operators/values.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-cstdint "" }
   3 //
   4 // Copyright (C) 2011-2022 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // 26.5.8.2.1 Class template uniform_int_distribution [rand.dist.uni.int]
  22
  23 #include <random>
  24 #include <functional>
  25 #include <testsuite_random.h>
  26
  27 // { dg-additional-options "-DSIMULATOR_TEST" { target simulator } }
  28
  29 #ifdef SIMULATOR_TEST
  30 # define ARGS 100, 1000
  31 #else
  32 # define ARGS
  33 #endif
  34
  35 void test01()
  36 {
  37   using namespace __gnu_test;
  38
  39   std::mt19937 eng;
  40
  41   std::uniform_int_distribution<> uid1(0, 2);
  42   auto buid1 = std::bind(uid1, eng);
  43   testDiscreteDist<ARGS>(buid1, [](int n) { return uniform_int_pdf(n, 0, 2); } );
  44
  45   std::uniform_int_distribution<> uid2(3, 7);
  46   auto buid2 = std::bind(uid2, eng);
  47   testDiscreteDist<ARGS>(buid2, [](int n) { return uniform_int_pdf(n, 3, 7); } );
  48
  49   std::uniform_int_distribution<> uid3(1, 20);
  50   auto buid3 = std::bind(uid3, eng);
  51   testDiscreteDist<ARGS>(buid3, [](int n) { return uniform_int_pdf(n, 1, 20); } );
  52 }
  53
  54 int main()
  55 {
  56   test01();
  57   return 0;
  58 }