ceph/src/boost/libs/numeric/interval/test/overflow.cpp

   1 /* Boost test/overflow.cpp
   2  * test if extended precision exponent does not disturb interval computation
   3  *
   4  * Copyright 2002-2003 Guillaume Melquiond
   5  *
   6  * Distributed under the Boost Software License, Version 1.0.
   7  * (See accompanying file LICENSE_1_0.txt or
   8  * copy at http://www.boost.org/LICENSE_1_0.txt)
   9  */
  10
  11 #include <boost/numeric/interval.hpp>
  12 #include <boost/test/minimal.hpp>
  13 #include "bugs.hpp"
  14
  15 template<class I>
  16 void test_one(typename I::base_type x, typename I::base_type f) {
  17   I y = x;
  18   typename I::base_type g = 1 / f;
  19   const int nb = 10000;
  20   for(int i = 0; i < nb; i++) y *= f;
  21   for(int i = 0; i < nb; i++) y *= g;
  22   BOOST_CHECK(in(x, y));
  23 # ifdef BOOST_BORLANDC
  24   ::detail::ignore_unused_variable_warning(nb);
  25 # endif
  26 }
  27
  28 template<class I>
  29 void test() {
  30   test_one<I>(1., 25.);
  31   test_one<I>(1., 0.04);
  32   test_one<I>(-1., 25.);
  33   test_one<I>(-1., 0.04);
  34 }
  35
  36 int test_main(int, char *[]) {
  37   test<boost::numeric::interval<float> >();
  38   test<boost::numeric::interval<double> >();
  39   //test<boost::numeric::interval<long double> >();
  40 # ifdef BOOST_BORLANDC
  41   ::detail::ignore_warnings();
  42 # endif
  43   return 0;
  44 }