libstdc++-v3/testsuite/26_numerics/random/chi_squared_distribution/83833.cc

   1 // Copyright (C) 2018 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target c++11 } }
  19 // { dg-additional-options "-ffloat-store" { target { m68*-*-* || ia32 } } }
  20 // { dg-require-cstdint "" }
  21
  22 #include <random>
  23 #include <testsuite_hooks.h>
  24
  25 void
  26 test01()
  27 {
  28   std::default_random_engine r1, r2;
  29   using chi = std::chi_squared_distribution<double>;
  30   chi::param_type p(5);
  31   chi d1(p);
  32   chi d2;
  33   d2.param(p);
  34   VERIFY( d1(r1) == d2(r2) ); // PR libstdc++/83833
  35 }
  36
  37 int
  38 main()
  39 {
  40   test01();
  41 }