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Added extended-integer support, which fixes #653 (the main part; the secondary part is split off as #1225)

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[SVN r47414]
This commit is contained in:
Daryle Walker
2008-07-14 06:28:54 +00:00
parent 10e5587b9e
commit 053be71261
4 changed files with 135 additions and 57 deletions
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57
test/integer_test.cpp
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@ -8,7 +8,8 @@
// See http://www.boost.org/libs/integer for documentation.
// Revision History
// 14 Jul 08 Improved testing of fast-integer template. (Daryle Walker)
// 14 Jul 08 Improved testing of processor-optimized integer template; added
// extended-integer support. (Daryle Walker)
// 13 Jul 08 Modernized tests w/ MPL instead of giant macros (Daryle Walker)
// 07 Jul 08 Changed tests to use the unit-test system (Daryle Walker)
// 04 Oct 01 Added tests for new templates; rewrote code (Daryle Walker)
@ -20,9 +21,11 @@
#include <boost/test/unit_test.hpp> // unit testing framework
#include <boost/test/test_case_template.hpp> // ..BOOST_AUTO_TEST_CASE_TEMPLATE
#include <boost/config.hpp> // for BOOST_NO_USING_TEMPLATE
#include <boost/integer.hpp> // for boost::int_t, boost::uint_t, etc.
#include <boost/limits.hpp> // for std::numeric_limits
#include <boost/config.hpp> // for BOOST_NO_USING_TEMPLATE, etc.
#include <boost/cstdint.hpp> // for boost::uintmax_t, intmax_t
#include <boost/integer.hpp> // for boost::int_t, boost::uint_t, etc.
#include <boost/integer_traits.hpp> // for boost::integer_traits
#include <boost/limits.hpp> // for std::numeric_limits
#include <boost/mpl/arithmetic.hpp> // for boost::mpl::plus, divides
#include <boost/mpl/assert.hpp> // for BOOST_MPL_ASSERT_RELATION, etc.
@ -101,6 +104,11 @@ typedef boost::mpl::vector<
#if ULONG_MAX > UINT_MAX
, unsigned long
#endif
#ifdef BOOST_HAS_LONG_LONG
, boost::ulong_long_type
#elif defined(BOOST_HAS_MS_INT64)
, unsigned __int64
#endif
> distinct_unsigned_types;
typedef boost::mpl::transform<
@ -145,10 +153,11 @@ typedef boost::mpl::transform_view<
> median_bit_counts;
// Maximum number of bits allowed
int const intmax_bits = boost::mpl::back<distinct_integral_bit_counts>::type::value;
// should be std::numeric_limits<boost::intmax_t>::digits + 1
int const uintmax_bits = intmax_bits;
// should be std::numeric_limits<boost::uintmax_t>::digits
typedef std::numeric_limits<boost:: intmax_t> intmax_limits;
typedef std::numeric_limits<boost::uintmax_t> uintmax_limits;
int const intmax_bits = intmax_limits::digits + 1;
int const uintmax_bits = uintmax_limits::digits;
// Make master lists including an outlier beyond all valid bit counts
typedef boost::mpl::sort<
@ -277,8 +286,8 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_shifted_unsigned_values_test, T,
using namespace boost;
#endif
unsigned long const one = 1u;
int const count = T::value;
boost::uintmax_t const one = 1u;
int const count = T::value;
BOOST_MPL_ASSERT( (is_same<typename uint_value_t<(one << (count -
2))>::least, typename uint_t<count - 1>::least>::value) );
@ -320,8 +329,8 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_shifted_signed_values_test, T,
using namespace boost;
#endif
long const one = 1;
int const count = T::value;
boost::intmax_t const one = 1;
int const count = T::value;
BOOST_MPL_ASSERT( (is_same<typename int_max_value_t<+(one << (count -
2))>::least, typename int_t<count - 1>::least>::value) );
@ -356,7 +365,7 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_masked_values_test, T,
// end for
// end Routine
// with Template = {int_t, uint_t}; Type = {least, fast};
// Template:Max = { LONG_MAX for int_t, ULONG_MAX for uint_t }
// Template:Max = { intmax_t.Max for int_t, uintmax_t.Max for uint_t }
// In other words, the selected type doesn't mask out any bits it's not
// supposed to. But now we'll use template meta-programming instead of
// macros. The limit of type-lists is usually less than 32 (not to mention
@ -368,9 +377,11 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_masked_values_test, T,
using namespace boost;
#endif
int const count = T::value, shift = uintmax_bits - count;
unsigned long const value_u = ULONG_MAX >> shift;
long const value_s = LONG_MAX >> shift;
int const count = T::value, shift = uintmax_bits - count;
boost::uintmax_t const value_u = uintmax_limits::max
BOOST_PREVENT_MACRO_SUBSTITUTION () >> shift;
boost::intmax_t const value_s = intmax_limits::max
BOOST_PREVENT_MACRO_SUBSTITUTION () >> shift;
BOOST_CHECK_EQUAL( typename uint_t<count>::least(value_u), value_u );
BOOST_CHECK_EQUAL( typename uint_t<count - 1>::least(value_u >> 1), value_u
@ -399,13 +410,16 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_shifted_values_test, T,
// end for
// end Routine
// with Template = {uint_value_t, int_max_value_t, int_min_value_t}; Type =
// {least, fast}; Template:Extreme = { LONG_MIN for int_min_value_t,
// LONG_MAX for int_max_value_t, ULONG_MAX for uint_value_t }
// {least, fast}; Template:Extreme = {intmax_t.Min for int_min_value_t,
// intmax_t.Max for int_max_value_t, uintmax_t.Max for uint_value_t}
// In other words, the selected type doesn't mask out any bits it's not
// supposed to. But now we'll use template meta-programming instead of
// macros. The limit of type-lists is usually less than 32 (not to mention
// 64) elements, so we have to take selected values.
using boost::uintmax_t;
using boost::intmax_t;
#ifndef BOOST_NO_USING_TEMPLATE
using boost::integer_traits;
using boost::uint_value_t;
using boost::int_max_value_t;
using boost::int_min_value_t;
@ -413,9 +427,10 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_shifted_values_test, T,
using namespace boost;
#endif
int const shift = T::value;
unsigned long const max_u = ULONG_MAX >> shift;
long const max_s = LONG_MAX >> shift, min_s = LONG_MIN >> shift;
int const shift = T::value;
uintmax_t const max_u = integer_traits<uintmax_t>::const_max >> shift;
intmax_t const max_s = integer_traits<intmax_t>::const_max >> shift,
min_s = integer_traits<intmax_t>::const_min >> shift;
BOOST_CHECK_EQUAL( typename uint_value_t<max_u>::least(max_u), max_u );
BOOST_CHECK_EQUAL( typename uint_value_t<(max_u >> 1)>::least(max_u >> 1),