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Hopefully made compile-time constants suitable for more compilers

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[SVN r47852]
This commit is contained in:
Daryle Walker
2008-07-28 14:41:00 +00:00
parent f041dc0f0a
commit 2fd0675a21
1 changed files with 26 additions and 11 deletions
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37
test/integer_test.cpp
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@ -44,6 +44,7 @@
#include <boost/mpl/push_back.hpp> // for boost::mpl::push_back
#include <boost/mpl/push_front.hpp> // for boost::mpl::push_front
#include <boost/mpl/range_c.hpp> // for boost::mpl::range_c
#include <boost/mpl/shift_right.hpp> // for boost::mpl::shift_right
#include <boost/mpl/sort.hpp> // for boost::mpl::sort
#include <boost/mpl/transform.hpp> // for boost::mpl::transform
#include <boost/mpl/transform_view.hpp> // for boost::mpl::transform_view
@ -290,6 +291,19 @@ print_out_template( T const &, ValueT setting, char const *template_pre_name,
#error "These tests cannot work without Substitution-Failure-Is-Not-An-Error"
#endif
// Get the extreme values for each integral type
template < typename T >
struct minimum_of
: boost::mpl::integral_c< T, boost::integer_traits<T>::const_min >
{
};
template < typename T >
struct maximum_of
: boost::mpl::integral_c< T, boost::integer_traits<T>::const_max >
{
};
} // unnamed namespace
@ -617,13 +631,14 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_shifted_unsigned_values_test, T,
// 64) elements, so we have to take selected values.
using boost::uintmax_t;
static uintmax_t const maxi = boost::integer_traits<uintmax_t>::const_max
>> T::value;
typedef boost::mpl::shift_right<maximum_of<uintmax_t>, T> maxi_type;
uintmax_t const maxi = maxi_type::value;
BOOST_CHECK_EQUAL( static_cast<typename
boost::uint_value_t<maxi>::least>(maxi), maxi );
boost::uint_value_t<maxi_type::value>::least>(maxi), maxi );
BOOST_CHECK_EQUAL( static_cast<typename
boost::uint_value_t<maxi>::fast>(maxi), maxi );
boost::uint_value_t<maxi_type::value>::fast>(maxi), maxi );
}
// Check if large value can fit its minimum required size, by value, signed
@ -646,20 +661,20 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_shifted_signed_values_test, T,
// 64) elements, so we have to take selected values.
using boost::intmax_t;
typedef boost::integer_traits<intmax_t> intmax_traits;
typedef boost::mpl::shift_right<minimum_of<intmax_t>, T> mini_type;
typedef boost::mpl::shift_right<maximum_of<intmax_t>, T> maxi_type;
static intmax_t const maxi = intmax_traits::const_max >> T::value,
mini = intmax_traits::const_min >> T::value;
intmax_t const maxi = maxi_type::value, mini = mini_type::value;
BOOST_CHECK_EQUAL( static_cast<typename
boost::int_max_value_t<maxi>::least>(maxi), maxi );
boost::int_max_value_t<maxi_type::value>::least>(maxi), maxi );
BOOST_CHECK_EQUAL( static_cast<typename
boost::int_max_value_t<maxi>::fast>(maxi), maxi );
boost::int_max_value_t<maxi_type::value>::fast>(maxi), maxi );
BOOST_CHECK_EQUAL( static_cast<typename
boost::int_min_value_t<mini>::least>(mini), mini );
boost::int_min_value_t<mini_type::value>::least>(mini), mini );
BOOST_CHECK_EQUAL( static_cast<typename
boost::int_min_value_t<mini>::fast>(mini), mini );
boost::int_min_value_t<mini_type::value>::fast>(mini), mini );
}
BOOST_AUTO_TEST_SUITE_END()