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///////////////////////////////////////////////////////////////
// Copyright 2012 John Maddock. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_
//
// Compare arithmetic results using fixed_int to GMP results.
//
#ifdef _MSC_VER
# define _SCL_SECURE_NO_WARNINGS
#endif
#include <boost/multiprecision/cpp_int.hpp>
#include "test.hpp"
template <class Number>
void test()
{
using namespace boost::multiprecision;
typedef Number test_type;
if(std::numeric_limits<test_type>::is_bounded)
{
test_type val = (std::numeric_limits<test_type>::max)();
#ifndef BOOST_NO_EXCEPTIONS
BOOST_CHECK_THROW(++val, std::overflow_error);
val = (std::numeric_limits<test_type>::max)();
BOOST_CHECK_THROW(test_type(1 + val), std::overflow_error);
BOOST_CHECK_THROW(test_type(val + 1), std::overflow_error);
BOOST_CHECK_THROW(test_type(2 * val), std::overflow_error);
val /= 2;
val += 1;
BOOST_CHECK_THROW(test_type(2 * val), std::overflow_error);
if(std::numeric_limits<test_type>::is_signed)
{
val = (std::numeric_limits<test_type>::min)();
BOOST_CHECK_THROW(--val, std::overflow_error);
val = (std::numeric_limits<test_type>::min)();
BOOST_CHECK_THROW(test_type(val - 1), std::overflow_error);
BOOST_CHECK_THROW(test_type(2 * val), std::overflow_error);
val /= 2;
val -= 1;
BOOST_CHECK_THROW(test_type(2 * val), std::overflow_error);
}
else
{
val = (std::numeric_limits<test_type>::min)();
BOOST_CHECK_THROW(--val, std::range_error);
val = (std::numeric_limits<test_type>::min)();
BOOST_CHECK_THROW(test_type(val - 1), std::range_error);
}
#endif
}
#ifndef BOOST_NO_EXCEPTIONS
if(std::numeric_limits<test_type>::is_signed)
{
test_type a = -1;
test_type b = 1;
BOOST_CHECK_THROW(test_type(a | b), std::range_error);
BOOST_CHECK_THROW(test_type(a & b), std::range_error);
BOOST_CHECK_THROW(test_type(a ^ b), std::range_error);
}
else
{
// Constructing from a negative value is not allowed:
BOOST_CHECK_THROW(test_type(-2), std::range_error);
BOOST_CHECK_THROW(test_type("-2"), std::range_error);
}
if(std::numeric_limits<test_type>::digits < std::numeric_limits<long long>::digits)
{
long long llm = (std::numeric_limits<long long>::max)();
test_type t;
BOOST_CHECK_THROW(t = llm, std::range_error);
BOOST_CHECK_THROW(t = static_cast<test_type>(llm), std::range_error);
unsigned long long ullm = (std::numeric_limits<unsigned long long>::max)();
BOOST_CHECK_THROW(t = ullm, std::range_error);
BOOST_CHECK_THROW(t = static_cast<test_type>(ullm), std::range_error);
static const checked_uint512_t big = (std::numeric_limits<checked_uint512_t>::max)();
BOOST_CHECK_THROW(t = static_cast<test_type>(big), std::range_error);
}
//
// String errors:
//
BOOST_CHECK_THROW(test_type("12A"), std::runtime_error);
BOOST_CHECK_THROW(test_type("0658"), std::runtime_error);
if(std::numeric_limits<test_type>::is_signed)
{
BOOST_CHECK_THROW(test_type(-2).str(0, std::ios_base::hex), std::runtime_error);
BOOST_CHECK_THROW(test_type(-2).str(0, std::ios_base::oct), std::runtime_error);
}
#endif
}
int main()
{
using namespace boost::multiprecision;
test<number<cpp_int_backend<0, 0, signed_magnitude, checked> > >();
test<checked_int512_t>();
test<checked_uint512_t>();
test<number<cpp_int_backend<32, 32, signed_magnitude, checked, void> > >();
test<number<cpp_int_backend<32, 32, unsigned_magnitude, checked, void> > >();
//
// We also need to test type with "odd" bit counts in order to ensure full code coverage:
//
test<number<cpp_int_backend<528, 528, signed_magnitude, checked, void> > >();
test<number<cpp_int_backend<528, 528, unsigned_magnitude, checked, void> > >();
test<number<cpp_int_backend<48, 48, signed_magnitude, checked, void> > >();
test<number<cpp_int_backend<48, 48, unsigned_magnitude, checked, void> > >();
return boost::report_errors();
}
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