libs/multiprecision/test/test_cpp_int_lit.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 //  Copyright 2013 John Maddock. Distributed under the Boost
   3 //  Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #include <boost/multiprecision/cpp_int.hpp>
   7 #include "test.hpp"
   8
   9 #if !(BOOST_WORKAROUND(BOOST_MSVC, <= 1900) && defined(CI_SUPPRESS_KNOWN_ISSUES)) && defined(BOOST_MP_USER_DEFINED_LITERALS)
  10
  11 using namespace boost::multiprecision;
  12
  13 template <class T>
  14 void test_literal(T val, const char* p)
  15 {
  16    BOOST_CHECK_EQUAL(val, cpp_int(p));
  17 }
  18
  19 #define TEST_LITERAL(x)                                      \
  20    {                                                         \
  21       constexpr auto val1       = BOOST_JOIN(x, _cppi);      \
  22       constexpr int1024_t val2  = BOOST_JOIN(x, _cppi1024);  \
  23       constexpr auto      val3  = BOOST_JOIN(x, _cppui);     \
  24       constexpr uint1024_t val4 = BOOST_JOIN(x, _cppui1024); \
  25       test_literal(val1, BOOST_STRINGIZE(x));                \
  26       test_literal(val2, BOOST_STRINGIZE(x));                \
  27       test_literal(val3, BOOST_STRINGIZE(x));                \
  28       test_literal(val4, BOOST_STRINGIZE(x));                \
  29       /* Negative values: */                                 \
  30       constexpr auto val5      = -BOOST_JOIN(x, _cppi);      \
  31       constexpr int1024_t val6 = -BOOST_JOIN(x, _cppi1024);  \
  32       constexpr auto      val7 = -val1;                      \
  33       constexpr int1024_t val8 = -val2;                      \
  34       BOOST_CHECK_EQUAL(val5, -cpp_int(val1));               \
  35       BOOST_CHECK_EQUAL(val6, -cpp_int(val1));               \
  36       BOOST_CHECK_EQUAL(val7, -cpp_int(val1));               \
  37       BOOST_CHECK_EQUAL(val8, -cpp_int(val1));               \
  38    }
  39
  40 int main()
  41 {
  42    using namespace boost::multiprecision::literals;
  43    TEST_LITERAL(0x0);
  44    TEST_LITERAL(0x00000);
  45    TEST_LITERAL(0x10000000);
  46    TEST_LITERAL(0x1234500000000123450000000123345000678000000456000000567000000fefabc00000000000000);
  47    return boost::report_errors();
  48 }
  49
  50 #else
  51
  52 int main() { return 0; }
  53
  54 #endif