ceph/src/boost/libs/algorithm/test/power_test.cpp

   1 /*
   2    Copyright (c) Marshall Clow 2014.
   3
   4    Distributed under the Boost Software License, Version 1.0. (See accompanying
   5    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7     For more information, see http://www.boost.org
   8 */
   9
  10 #include <iostream>
  11 #include <functional>
  12
  13 #include <boost/config.hpp>
  14 #include <boost/algorithm/algorithm.hpp>
  15
  16 #define BOOST_TEST_MAIN
  17 #include <boost/test/unit_test.hpp>
  18
  19 namespace ba = boost::algorithm;
  20
  21 void test_power ()
  22 {
  23     BOOST_CHECK ( ba::power(0, 0) == 1);
  24     BOOST_CHECK ( ba::power(5, 0) == 1);
  25     BOOST_CHECK ( ba::power(1, 1) == 1);
  26     BOOST_CHECK ( ba::power(1, 4) == 1);
  27     BOOST_CHECK ( ba::power(3, 2) == 9);
  28     BOOST_CHECK ( ba::power(2, 3) == 8);
  29     BOOST_CHECK ( ba::power(3, 3) == 27);
  30     BOOST_CHECK ( ba::power(2, 30) == 0x40000000);
  31     BOOST_CHECK ( ba::power(5L, 10) == 3125*3125);
  32     BOOST_CHECK ( ba::power(18, 3) == 18*18*18);
  33
  34     BOOST_CHECK ( ba::power(3,2) == ba::power(3,2, std::multiplies<int>()));
  35     BOOST_CHECK ( ba::power(3,2, std::plus<int>()) == 6);
  36 }
  37
  38
  39 void test_power_constexpr ()
  40 {
  41     BOOST_CXX14_CONSTEXPR bool check_zero_power1 =
  42         ba::power(0, 0) == 1;
  43     BOOST_CHECK(check_zero_power1);
  44     BOOST_CXX14_CONSTEXPR bool check_zero_power2 =
  45         ba::power(5, 0) == 1;
  46     BOOST_CHECK(check_zero_power2);
  47     BOOST_CXX14_CONSTEXPR bool check_one_base1 =
  48         ba::power(1, 1) == 1;
  49     BOOST_CHECK(check_one_base1);
  50     BOOST_CXX14_CONSTEXPR bool check_one_base2 =
  51         ba::power(1, 4) == 1;
  52     BOOST_CHECK(check_one_base2);
  53     BOOST_CXX14_CONSTEXPR bool check_power1 =
  54         ba::power(3, 2) == 9;
  55     BOOST_CHECK(check_power1);
  56     BOOST_CXX14_CONSTEXPR bool check_power2 =
  57         ba::power(2, 3) == 8;
  58     BOOST_CHECK(check_power2);
  59     BOOST_CXX14_CONSTEXPR bool check_power3 =
  60         ba::power(3, 3) == 27;
  61     BOOST_CHECK(check_power3);
  62     BOOST_CXX14_CONSTEXPR bool check_power4 =
  63         ba::power(2, 30) == 0x40000000;
  64     BOOST_CHECK(check_power4);
  65     BOOST_CXX14_CONSTEXPR bool check_power5 =
  66         ba::power(5L, 10) == 3125*3125;
  67     BOOST_CHECK(check_power5);
  68     BOOST_CXX14_CONSTEXPR bool check_power6 =
  69         ba::power(18, 3) == 18*18*18;
  70     BOOST_CHECK(check_power6);
  71
  72     BOOST_CXX14_CONSTEXPR bool check_multiple =
  73         ba::power(3, 2, std::multiplies<int>()) == ba::power(3, 2);
  74     BOOST_CHECK(check_multiple);
  75     BOOST_CXX14_CONSTEXPR bool check_plus =
  76         ba::power(3, 2, std::plus<int>()) == 6;
  77     BOOST_CHECK(check_plus);
  78 }
  79
  80
  81 BOOST_AUTO_TEST_CASE( test_main ) {
  82   test_power ();
  83   test_power_constexpr ();
  84 }