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[thirdparty/gcc.git] / libstdc++-v3 / testsuite / tr1 / 5_numerical_facilities / random / ranlux3_01.cc

// 2006-08-22  Paolo Carlini  <pcarlini@suse.de>
//
// Copyright (C) 2006-2022 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

// 5.1.5 Engines with predefined parameters
// 5.1.5 [3]

#include <iostream>
#include <tr1/random>
#include <testsuite_hooks.h>

void
test01()
{
  std::tr1::ranlux3_01 a;
  for (int i = 0; i < 9999; ++i)
    a();

#if _GLIBCXX_USE_C99_MATH_TR1
  VERIFY( a() == 5957620 * std::tr1::ldexp(float(1), -24) );
#else
  VERIFY( a() == 5957620 * std::pow(float(2), -24) );
#endif
}

int main()
{
  test01();
  return 0;
}