mirror of
https://github.com/boostorg/integer.git
synced 2025-07-29 12:17:13 +02:00
Tightened up code; number of bit-counts sampled is now comprehensive instead of representative (with a preprocessor switch for the old behavior since the new behavior greatly increases compile times)
[SVN r47801]
This commit is contained in:
Daryle Walker
@ -21,16 +21,15 @@
|
||||
|
||||
#define BOOST_TEST_MODULE "Integer size-selection tests"
|
||||
|
||||
#include <boost/test/unit_test.hpp> // unit testing framework
|
||||
#include <boost/test/test_case_template.hpp>
|
||||
#include <boost/test/unit_test.hpp> // unit testing framework
|
||||
|
||||
#include <boost/config.hpp> // for BOOST_NO_USING_TEMPLATE, etc.
|
||||
#include <boost/config.hpp> // for BOOST_NO_SFINAE
|
||||
#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/detail/extended_integer.hpp> // for BOOST_HAS_XINT, etc.
|
||||
#include <boost/detail/extended_integer.hpp> // BOOST_HAS_XINT, BOOST_UXINT_MAX
|
||||
|
||||
#include <boost/mpl/arithmetic.hpp> // for boost::mpl::plus, divides
|
||||
#include <boost/mpl/assert.hpp> // for BOOST_MPL_ASSERT_RELATION, etc.
|
||||
@ -38,11 +37,13 @@
|
||||
#include <boost/mpl/copy.hpp> // for boost::mpl::copy
|
||||
#include <boost/mpl/equal.hpp> // for boost::mpl::equal
|
||||
#include <boost/mpl/front_inserter.hpp> // for boost::mpl::front_inserter
|
||||
#include <boost/mpl/int.hpp> // for boost::mpl::int_
|
||||
#include <boost/mpl/integral_c.hpp> // for boost::mpl::integral_c
|
||||
#include <boost/mpl/joint_view.hpp> // for boost::mpl::joint_view
|
||||
#include <boost/mpl/pop_back.hpp> // for boost::mpl::pop_back
|
||||
#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/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
|
||||
@ -72,6 +73,12 @@
|
||||
#define CONTROL_SHOW_TYPES 0
|
||||
#endif
|
||||
|
||||
// Control if every potential bit-count is used, or only a selection
|
||||
// For me, full counts increase compile time from 90 seconds to 20 minutes!
|
||||
#ifndef CONTROL_FULL_COUNTS
|
||||
#define CONTROL_FULL_COUNTS 1
|
||||
#endif
|
||||
|
||||
|
||||
// If specializations have not already been done, then we can confirm
|
||||
// the effects of the fast types by making a specialization. If there
|
||||
@ -123,21 +130,16 @@ typedef boost::mpl::transform<
|
||||
>::type distinct_signed_types;
|
||||
|
||||
// List the digit counts for each integral type
|
||||
class dibc_helper
|
||||
template < typename T >
|
||||
struct digits_of
|
||||
: boost::mpl::int_< std::numeric_limits<T>::digits >
|
||||
{
|
||||
template < typename T >
|
||||
struct type_to_digit_count
|
||||
: boost::mpl::integral_c< int, std::numeric_limits<T>::digits >
|
||||
{};
|
||||
|
||||
public:
|
||||
typedef boost::mpl::transform<
|
||||
distinct_unsigned_types,
|
||||
type_to_digit_count< boost::mpl::_1 >
|
||||
>::type type;
|
||||
};
|
||||
|
||||
typedef dibc_helper::type distinct_integral_bit_counts;
|
||||
typedef boost::mpl::transform<
|
||||
distinct_unsigned_types,
|
||||
digits_of< boost::mpl::_1 >
|
||||
>::type distinct_integral_bit_counts;
|
||||
|
||||
// Make list of bit counts between each offical point, plus CHAR_BIT/2
|
||||
typedef boost::mpl::transform_view<
|
||||
@ -166,6 +168,9 @@ 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
|
||||
#if CONTROL_FULL_COUNTS
|
||||
typedef boost::mpl::range_c<int, 0, uintmax_bits + 2> bits_list;
|
||||
#else
|
||||
typedef boost::mpl::sort<
|
||||
boost::mpl::copy<
|
||||
boost::mpl::joint_view<
|
||||
@ -179,23 +184,46 @@ typedef boost::mpl::sort<
|
||||
>
|
||||
>::type
|
||||
>::type bits_list;
|
||||
#endif
|
||||
|
||||
// Remove the outlier when all bits counts must be valid
|
||||
#if CONTROL_FULL_COUNTS
|
||||
typedef boost::mpl::range_c<int, 0, uintmax_bits + 1> valid_bits_list;
|
||||
#else
|
||||
typedef boost::mpl::pop_back<bits_list>::type valid_bits_list;
|
||||
#endif
|
||||
|
||||
// Replace the minimum bit count with one more, so right-shifting by a stored
|
||||
// value doesn't give an invalid result
|
||||
#if CONTROL_FULL_COUNTS
|
||||
typedef boost::mpl::range_c<int, 1, uintmax_bits + 1>
|
||||
valid_to_decrease_bits_list;
|
||||
#else
|
||||
typedef valid_bits_list valid_to_decrease_bits_list;
|
||||
#endif
|
||||
|
||||
// Replace the maximum bit count with one less, so left-shifting by a stored
|
||||
// value doesn't give an invalid result
|
||||
#if CONTROL_FULL_COUNTS
|
||||
typedef boost::mpl::range_c<int, 0, uintmax_bits> valid_to_increase_ubits_list;
|
||||
#else
|
||||
typedef boost::mpl::push_back<
|
||||
boost::mpl::pop_back< valid_bits_list >::type,
|
||||
boost::mpl::integral_c< int, uintmax_bits - 1 >
|
||||
>::type valid_to_increase_ubits_list;
|
||||
#endif
|
||||
|
||||
// Do it again for signed types since they have one-less bit to use for the
|
||||
// mantissa (don't want to shift into the sign bit)
|
||||
#if CONTROL_FULL_COUNTS
|
||||
typedef boost::mpl::range_c<int, 0, intmax_bits - 2>
|
||||
valid_to_increase_sbits_list;
|
||||
#else
|
||||
typedef boost::mpl::push_back<
|
||||
boost::mpl::pop_back< valid_bits_list >::type,
|
||||
boost::mpl::integral_c< int, intmax_bits - 3 >
|
||||
>::type valid_to_increase_sbits_list;
|
||||
#endif
|
||||
|
||||
// List the digit counts for each integral type, this time as an object, an
|
||||
// array working as a sorted list
|
||||
@ -218,153 +246,49 @@ int const integral_bit_lengths[] = {
|
||||
std::size_t const integral_type_count = sizeof(integral_bit_lengths) /
|
||||
sizeof(integral_bit_lengths[0]);
|
||||
|
||||
// Use SFINAE to check if a particular bit-count is supported
|
||||
// "Template-typedefs" to reduce two-argument templates to single-argument.
|
||||
// This way, all the MPL-compatible templates have the same form, for below.
|
||||
template < int Bits >
|
||||
struct signed_sized_integral : boost::sized_integral<Bits, signed> {};
|
||||
|
||||
template < int Bits >
|
||||
struct unsigned_sized_integral : boost::sized_integral<Bits, unsigned> {};
|
||||
|
||||
template < int Bits >
|
||||
struct signed_exact_integral : boost::exact_integral<Bits, signed> {};
|
||||
|
||||
template < int Bits >
|
||||
struct unsigned_exact_integral : boost::exact_integral<Bits, unsigned> {};
|
||||
|
||||
// Use SFINAE to check if a particular parameter is supported
|
||||
#ifndef BOOST_NO_SFINAE
|
||||
template < typename ValueT, template<ValueT> class Tmpl, ValueT Value >
|
||||
bool
|
||||
print_out_sized_signed( boost::mpl::integral_c<int, Bits> const &x, int bits,
|
||||
typename boost::sized_integral<Bits, signed>::type *unused = 0 )
|
||||
print_out_template( Tmpl<Value> const &, ValueT setting, char const
|
||||
*template_pre_name, char const *template_post_name, typename Tmpl<Value>::type
|
||||
*unused = 0 )
|
||||
{
|
||||
// Too bad the type-id expression couldn't use the compact form "*unused",
|
||||
// but type-ids of dereferenced null pointers throw by order of C++ 2003,
|
||||
// sect. 5.2.8, para. 2 (although the result is not conceptually needed).
|
||||
|
||||
PRIVATE_SHOW_MESSAGE( "There is a sized_integral<" << bits <<
|
||||
", signed> specialization, with type '" << typeid(typename
|
||||
boost::sized_integral<Bits, signed>::type).name() << "'." );
|
||||
PRIVATE_SHOW_MESSAGE( "This is " << template_pre_name << setting
|
||||
<< template_post_name << " specialization, with type '" << typeid(typename
|
||||
Tmpl<Value>::type).name() << "'." );
|
||||
return true;
|
||||
}
|
||||
|
||||
template < typename T >
|
||||
template < typename ValueT, typename T >
|
||||
bool
|
||||
print_out_sized_signed( T const &x, int bits )
|
||||
print_out_template( T const &, ValueT setting, char const *template_pre_name,
|
||||
char const *template_post_name )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is no sized_integral<" << bits <<
|
||||
", signed> specialization." );
|
||||
return false;
|
||||
}
|
||||
|
||||
template < int Bits >
|
||||
bool
|
||||
print_out_sized_unsigned( boost::mpl::integral_c<int, Bits> const &x, int bits,
|
||||
typename boost::sized_integral<Bits, unsigned>::type *unused = 0 )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is a sized_integral<" << bits <<
|
||||
", unsigned> specialization, with type '" << typeid(typename
|
||||
boost::sized_integral<Bits, unsigned>::type).name() << "'." );
|
||||
return true;
|
||||
}
|
||||
|
||||
template < typename T >
|
||||
bool
|
||||
print_out_sized_unsigned( T const &x, int bits )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is no sized_integral<" << bits <<
|
||||
", unsigned> specialization." );
|
||||
return false;
|
||||
}
|
||||
|
||||
template < int Bits >
|
||||
bool
|
||||
print_out_exact_signed( boost::mpl::integral_c<int, Bits> const &x, int bits,
|
||||
typename boost::exact_integral<Bits, signed>::type *unused = 0 )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is an exact_integral<" << bits <<
|
||||
", signed> specialization, with type '" << typeid(typename
|
||||
boost::exact_integral<Bits, signed>::type).name() << "'." );
|
||||
return true;
|
||||
}
|
||||
|
||||
template < typename T >
|
||||
bool
|
||||
print_out_exact_signed( T const &x, int bits )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is no exact_integral<" << bits <<
|
||||
", signed> specialization." );
|
||||
return false;
|
||||
}
|
||||
|
||||
template < int Bits >
|
||||
bool
|
||||
print_out_exact_unsigned( boost::mpl::integral_c<int, Bits> const &x, int bits,
|
||||
typename boost::exact_integral<Bits, unsigned>::type *unused = 0 )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is an exact_integral<" << bits <<
|
||||
", unsigned> specialization, with type '" << typeid(typename
|
||||
boost::exact_integral<Bits, unsigned>::type).name() << "'." );
|
||||
return true;
|
||||
}
|
||||
|
||||
template < typename T >
|
||||
bool
|
||||
print_out_exact_unsigned( T const &x, int bits )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is no exact_integral<" << bits <<
|
||||
", unsigned> specialization." );
|
||||
return false;
|
||||
}
|
||||
|
||||
template < boost::intmax_t Value >
|
||||
bool
|
||||
print_out_maximum_signed( boost::maximum_signed_integral<Value> const &x,
|
||||
boost::intmax_t value, typename boost::maximum_signed_integral<Value>::type
|
||||
*unused = 0 )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is a maximum_signed_integral<" << value <<
|
||||
"> specialization, with type '" << typeid(typename
|
||||
boost::maximum_signed_integral<Value>::type).name() << "'." );
|
||||
return true;
|
||||
}
|
||||
|
||||
template < typename T >
|
||||
bool
|
||||
print_out_maximum_signed( T const &x, boost::intmax_t value )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is no maximum_signed_integral<" << value <<
|
||||
"> specialization." );
|
||||
return false;
|
||||
}
|
||||
|
||||
template < boost::intmax_t Value >
|
||||
bool
|
||||
print_out_minimum_signed( boost::minimum_signed_integral<Value> const &x,
|
||||
boost::intmax_t value, typename boost::minimum_signed_integral<Value>::type
|
||||
*unused = 0 )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is a minimum_signed_integral<" << value <<
|
||||
"> specialization, with type '" << typeid(typename
|
||||
boost::minimum_signed_integral<Value>::type).name() << "'." );
|
||||
return true;
|
||||
}
|
||||
|
||||
template < typename T >
|
||||
bool
|
||||
print_out_minimum_signed( T const &x, boost::intmax_t value )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is no minimum_signed_integral<" << value <<
|
||||
"> specialization." );
|
||||
return false;
|
||||
}
|
||||
|
||||
template < boost::uintmax_t Value >
|
||||
bool
|
||||
print_out_maximum_unsigned( boost::maximum_unsigned_integral<Value> const &x,
|
||||
boost::uintmax_t value, typename boost::maximum_unsigned_integral<Value>::type
|
||||
*unused = 0 )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is a maximum_unsigned_integral<" << value <<
|
||||
"> specialization, with type '" << typeid(typename
|
||||
boost::maximum_unsigned_integral<Value>::type).name() << "'." );
|
||||
return true;
|
||||
}
|
||||
|
||||
template < typename T >
|
||||
bool
|
||||
print_out_maximum_unsigned( T const &x, boost::uintmax_t value )
|
||||
{
|
||||
PRIVATE_SHOW_MESSAGE( "There is no maximum_unsigned_integral<" << value <<
|
||||
"> specialization." );
|
||||
PRIVATE_SHOW_MESSAGE( "Looking for " << template_pre_name << setting
|
||||
<< template_post_name << " specialization? It doesn't exist." );
|
||||
return false;
|
||||
}
|
||||
#else
|
||||
#error "These tests cannot work without Substitution-Failure-Is-Not-An-Error"
|
||||
#endif
|
||||
|
||||
} // unnamed namespace
|
||||
|
||||
@ -375,25 +299,17 @@ BOOST_AUTO_TEST_SUITE( optimized_type_tests )
|
||||
// Check the optimzed type override of a given type
|
||||
BOOST_AUTO_TEST_CASE( fast_type_test )
|
||||
{
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using std::numeric_limits;
|
||||
using boost::is_same;
|
||||
#else
|
||||
using namespace std;
|
||||
using namespace boost;
|
||||
#endif
|
||||
|
||||
typedef short least_type;
|
||||
typedef boost::int_fast_t<least_type>::fast fast_type;
|
||||
typedef numeric_limits<least_type> least_limits;
|
||||
typedef numeric_limits<fast_type> fast_limits;
|
||||
typedef std::numeric_limits<least_type> least_limits;
|
||||
typedef std::numeric_limits<fast_type> fast_limits;
|
||||
|
||||
typedef boost::fast_integral<least_type>::type real_fast_type;
|
||||
|
||||
BOOST_MPL_ASSERT_RELATION( (is_same<least_type, fast_type>::value), ==,
|
||||
false );
|
||||
BOOST_MPL_ASSERT_RELATION( (is_same<fast_type, real_fast_type>::value), ==,
|
||||
true );
|
||||
BOOST_MPL_ASSERT_RELATION( (boost::is_same<least_type, fast_type>::value),
|
||||
==, false );
|
||||
BOOST_MPL_ASSERT_RELATION( (boost::is_same<fast_type,
|
||||
real_fast_type>::value), ==, true );
|
||||
BOOST_MPL_ASSERT_RELATION( fast_limits::is_specialized, ==, true );
|
||||
BOOST_MPL_ASSERT_RELATION( fast_limits::is_signed &&
|
||||
fast_limits::is_bounded, ==, true );
|
||||
@ -409,14 +325,16 @@ BOOST_AUTO_TEST_SUITE( show_type_tests )
|
||||
// Check the specialization type status of given bit lengths, minimum
|
||||
BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_lengths_test, T, bits_list )
|
||||
{
|
||||
BOOST_CHECK_EQUAL( print_out_sized_signed(T(), T::value), T::value <=
|
||||
intmax_bits );
|
||||
BOOST_CHECK_EQUAL( print_out_sized_unsigned(T(), T::value), T::value <=
|
||||
uintmax_bits );
|
||||
BOOST_CHECK_EQUAL( print_out_template(signed_sized_integral<T::value>(),
|
||||
T::value, "a sized_integral<", ", signed>"), T::value && (T::value <=
|
||||
intmax_bits) );
|
||||
BOOST_CHECK_EQUAL( print_out_template(unsigned_sized_integral<T::value>(),
|
||||
T::value, "a sized_integral<", ", unsigned>"), T::value <= uintmax_bits );
|
||||
}
|
||||
|
||||
// Check the classic specialization type status of given bit lengths, minimum
|
||||
BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_classic_lengths_test, T,
|
||||
// Check the classic specialization type status of given bit lengths, minimum,
|
||||
// unsigned
|
||||
BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_classic_lengths_unsigned_test, T,
|
||||
valid_bits_list )
|
||||
{
|
||||
// This test is supposed to replace the following printouts given in
|
||||
@ -432,23 +350,21 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_classic_lengths_test, T,
|
||||
// of type-lists is usually less than 32 (not to mention 64) elements, so we
|
||||
// have to take selected values. The only interesting part is if the bit
|
||||
// count is too large, and we can't check that yet.
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using std::numeric_limits;
|
||||
using boost::int_t;
|
||||
using boost::uint_t;
|
||||
#else
|
||||
using namespace std;
|
||||
using namespace boost;
|
||||
#endif
|
||||
BOOST_MPL_ASSERT_RELATION( std::numeric_limits<typename
|
||||
boost::uint_t<T::value>::least>::digits, >=, T::value );
|
||||
BOOST_MPL_ASSERT_RELATION( std::numeric_limits<typename
|
||||
boost::uint_t<T::value>::fast>::digits, >=, T::value );
|
||||
}
|
||||
|
||||
BOOST_MPL_ASSERT_RELATION( numeric_limits<typename
|
||||
int_t<T::value>::least>::digits, >=, T::value - 1 );
|
||||
BOOST_MPL_ASSERT_RELATION( numeric_limits<typename
|
||||
int_t<T::value>::fast>::digits, >=, T::value - 1 );
|
||||
BOOST_MPL_ASSERT_RELATION( numeric_limits<typename
|
||||
uint_t<T::value>::least>::digits, >=, T::value );
|
||||
BOOST_MPL_ASSERT_RELATION( numeric_limits<typename
|
||||
uint_t<T::value>::fast>::digits, >=, T::value );
|
||||
// Check the classic specialization type status of given bit lengths, minimum,
|
||||
// signed
|
||||
BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_classic_lengths_signed_test, T,
|
||||
valid_to_decrease_bits_list )
|
||||
{
|
||||
BOOST_MPL_ASSERT_RELATION( std::numeric_limits<typename
|
||||
boost::int_t<T::value>::least>::digits, >=, T::value - 1 );
|
||||
BOOST_MPL_ASSERT_RELATION( std::numeric_limits<typename
|
||||
boost::int_t<T::value>::fast>::digits, >=, T::value - 1 );
|
||||
}
|
||||
|
||||
// Check size comparisons of given value support, unsigned
|
||||
@ -469,24 +385,10 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_shifted_unsigned_values_test, T,
|
||||
// have to take selected values. The interesting parts are where N is the
|
||||
// length of a integral type, so 1 << N would have to fit in the next larger
|
||||
// type. (This is why N can't be more than bitlength(uintmax_t) - 1.)
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using boost::mpl::equal;
|
||||
using boost::maximum_unsigned_integral;
|
||||
using boost::sized_integral;
|
||||
#else
|
||||
using namespace boost::mpl;
|
||||
using namespace boost;
|
||||
#endif
|
||||
|
||||
boost::uintmax_t const one = 1u;
|
||||
int const count = T::value;
|
||||
|
||||
BOOST_MPL_ASSERT( (equal< maximum_unsigned_integral<(one << (count - 2))>,
|
||||
sized_integral<count - 1, unsigned> >) );
|
||||
BOOST_MPL_ASSERT( (equal< maximum_unsigned_integral<(one << (count - 1))>,
|
||||
sized_integral<count, unsigned> >) );
|
||||
BOOST_MPL_ASSERT( (equal< maximum_unsigned_integral<(one << count)>,
|
||||
sized_integral<count + 1, unsigned> >) );
|
||||
BOOST_MPL_ASSERT( (boost::mpl::equal< boost::maximum_unsigned_integral<(one
|
||||
<< T::value)>, unsigned_sized_integral<T::value + 1> >) );
|
||||
}
|
||||
|
||||
// Check size comparisons of given value support, signed
|
||||
@ -512,151 +414,124 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_shifted_signed_values_test, T,
|
||||
// length of a integral type, so 1 << N would have to fit in the next larger
|
||||
// type. (This is why N can't be more than bitlength(intmax_t) - 1. Note
|
||||
// that bitlength(intmax_t) + 1 == bitlength(uintmax_t).)
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using boost::mpl::equal;
|
||||
using boost::maximum_signed_integral;
|
||||
using boost::sized_integral;
|
||||
using boost::minimum_signed_integral;
|
||||
#else
|
||||
using namespace boost::mpl;
|
||||
using namespace boost;
|
||||
#endif
|
||||
static boost::intmax_t const one = 1;
|
||||
|
||||
boost::intmax_t const one = 1;
|
||||
int const count = T::value;
|
||||
|
||||
BOOST_MPL_ASSERT( (equal< maximum_signed_integral<+(one << (count - 2))>,
|
||||
sized_integral<count - 1, signed> >) );
|
||||
BOOST_MPL_ASSERT( (equal< minimum_signed_integral<-(one << (count - 2))>,
|
||||
sized_integral<count - 1, signed> >) );
|
||||
|
||||
BOOST_MPL_ASSERT( (equal< maximum_signed_integral<+(one << (count - 1))>,
|
||||
sized_integral<count, signed> >) );
|
||||
BOOST_MPL_ASSERT( (equal< minimum_signed_integral<-(one << (count - 1))>,
|
||||
sized_integral<count, signed> >) );
|
||||
|
||||
BOOST_MPL_ASSERT( (equal< maximum_signed_integral<+(one << count)>,
|
||||
sized_integral<count + 1, signed> >) );
|
||||
BOOST_MPL_ASSERT( (equal< minimum_signed_integral<-(one << count)>,
|
||||
sized_integral<count + 1, signed> >) );
|
||||
BOOST_MPL_ASSERT( (boost::mpl::equal< boost::maximum_signed_integral<+(one
|
||||
<< T::value)>, signed_sized_integral<T::value + 1> >) );
|
||||
BOOST_MPL_ASSERT( (boost::mpl::equal< boost::minimum_signed_integral<-(one
|
||||
<< T::value)>, signed_sized_integral<T::value + 1> >) );
|
||||
}
|
||||
|
||||
// Check the specialization type status of given bit lengths, exact only
|
||||
BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_exact_lengths_test, T, bits_list )
|
||||
{
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using std::binary_search;
|
||||
#else
|
||||
using namespace std;
|
||||
#endif
|
||||
bool const is_exact_length = std::binary_search( integral_bit_lengths,
|
||||
integral_bit_lengths + integral_type_count, T::value );
|
||||
|
||||
BOOST_CHECK_EQUAL( print_out_exact_signed(T(), T::value),
|
||||
binary_search(integral_bit_lengths, integral_bit_lengths +
|
||||
integral_type_count, T::value) );
|
||||
BOOST_CHECK_EQUAL( print_out_exact_unsigned(T(), T::value),
|
||||
binary_search(integral_bit_lengths, integral_bit_lengths +
|
||||
integral_type_count, T::value) );
|
||||
BOOST_CHECK_EQUAL( print_out_template(signed_exact_integral<T::value>(),
|
||||
T::value, "an exact_integral<", ", signed>"), is_exact_length );
|
||||
BOOST_CHECK_EQUAL( print_out_template(unsigned_exact_integral<T::value>(),
|
||||
T::value, "an exact_integral<", ", unsigned>"), is_exact_length );
|
||||
}
|
||||
|
||||
// Check the classic specialization type status of given bit lengths, exact only
|
||||
BOOST_AUTO_TEST_CASE_TEMPLATE( show_types_for_classic_exact_lengths_test, T,
|
||||
distinct_integral_bit_counts )
|
||||
{
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using std::numeric_limits;
|
||||
using boost::int_exact_t;
|
||||
using boost::uint_exact_t;
|
||||
#else
|
||||
using namespace std;
|
||||
using namespace boost;
|
||||
#endif
|
||||
|
||||
BOOST_MPL_ASSERT_RELATION( numeric_limits<typename
|
||||
int_exact_t<T::value>::exact>::digits, ==, T::value - 1 );
|
||||
BOOST_MPL_ASSERT_RELATION( numeric_limits<typename
|
||||
uint_exact_t<T::value>::exact>::digits, ==, T::value );
|
||||
BOOST_MPL_ASSERT_RELATION( std::numeric_limits<typename
|
||||
boost::int_exact_t<T::value>::exact>::digits, ==, T::value - 1 );
|
||||
BOOST_MPL_ASSERT_RELATION( std::numeric_limits<typename
|
||||
boost::uint_exact_t<T::value>::exact>::digits, ==, T::value );
|
||||
}
|
||||
|
||||
// Check if MPL-compatible templates give bad returns for out-of-range values
|
||||
BOOST_AUTO_TEST_CASE( show_not_type_for_parameter_test )
|
||||
{
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using boost::sized_integral;
|
||||
using boost::mpl::integral_c;
|
||||
using boost::exact_integral;
|
||||
using boost::maximum_signed_integral;
|
||||
using boost::minimum_signed_integral;
|
||||
using boost::maximum_unsigned_integral;
|
||||
#else
|
||||
using namespace boost;
|
||||
using namespace boost::mpl;
|
||||
#endif
|
||||
typedef signed_sized_integral< 3> ssz3_type;
|
||||
typedef signed_sized_integral< 0> ssz0_type;
|
||||
typedef signed_sized_integral<-3> ssz3n_type;
|
||||
|
||||
typedef sized_integral< 3, signed> ssz3_type;
|
||||
typedef sized_integral< 0, signed> ssz0_type;
|
||||
typedef sized_integral<-3, signed> ssz3n_type;
|
||||
BOOST_CHECK( print_out_template(ssz3_type(), ssz3_type::bit_count,
|
||||
"a sized_integral<", ", signed>") );
|
||||
BOOST_CHECK( !print_out_template(ssz0_type(), ssz0_type::bit_count,
|
||||
"a sized_integral<", ", signed>") );
|
||||
BOOST_CHECK( !print_out_template(ssz3n_type(), ssz3n_type::bit_count,
|
||||
"a sized_integral<", ", signed>") );
|
||||
|
||||
BOOST_CHECK( print_out_sized_signed(integral_c<int, ssz3_type::bit_count>(),
|
||||
ssz3_type::bit_count) );
|
||||
BOOST_CHECK( !print_out_sized_signed(integral_c<int, ssz0_type::bit_count>(),
|
||||
ssz0_type::bit_count) );
|
||||
BOOST_CHECK( !print_out_sized_signed(integral_c<int, ssz3n_type::bit_count>(),
|
||||
ssz3n_type::bit_count) );
|
||||
typedef unsigned_sized_integral< 3> usz3_type;
|
||||
typedef unsigned_sized_integral< 0> usz0_type;
|
||||
typedef unsigned_sized_integral<-3> usz3n_type;
|
||||
|
||||
typedef sized_integral< 3, unsigned> usz3_type;
|
||||
typedef sized_integral< 0, unsigned> usz0_type;
|
||||
typedef sized_integral<-3, unsigned> usz3n_type;
|
||||
BOOST_CHECK( print_out_template(usz3_type(), usz3_type::bit_count,
|
||||
"a sized_integral<", ", unsigned>") );
|
||||
BOOST_CHECK( print_out_template(usz0_type(), usz0_type::bit_count,
|
||||
"a sized_integral<", ", unsigned>") );
|
||||
BOOST_CHECK( !print_out_template(usz3n_type(), usz3n_type::bit_count,
|
||||
"a sized_integral<", ", unsigned>") );
|
||||
|
||||
BOOST_CHECK( print_out_sized_unsigned(integral_c<int, usz3_type::bit_count>(),
|
||||
usz3_type::bit_count) );
|
||||
BOOST_CHECK( print_out_sized_unsigned(integral_c<int, usz0_type::bit_count>(),
|
||||
usz0_type::bit_count) );
|
||||
BOOST_CHECK( !print_out_sized_unsigned(integral_c<int, usz3n_type::bit_count>(),
|
||||
usz3n_type::bit_count) );
|
||||
typedef signed_exact_integral< CHAR_BIT > se8_type;
|
||||
typedef signed_exact_integral< 3> se3_type;
|
||||
typedef signed_exact_integral< 0> se0_type;
|
||||
typedef signed_exact_integral<-3> se3n_type;
|
||||
typedef signed_exact_integral< - CHAR_BIT > se8n_type;
|
||||
|
||||
typedef exact_integral< 3, signed> se3_type;
|
||||
typedef exact_integral< 0, signed> se0_type;
|
||||
typedef exact_integral<-3, signed> se3n_type;
|
||||
BOOST_CHECK( print_out_template(se8_type(), se8_type::bit_count,
|
||||
"an exact_integral<", ", signed>") );
|
||||
BOOST_CHECK( !print_out_template(se3_type(), se3_type::bit_count,
|
||||
"an exact_integral<", ", signed>") );
|
||||
BOOST_CHECK( !print_out_template(se0_type(), se0_type::bit_count,
|
||||
"an exact_integral<", ", signed>") );
|
||||
BOOST_CHECK( !print_out_template(se3n_type(), se3n_type::bit_count,
|
||||
"an exact_integral<", ", signed>") );
|
||||
BOOST_CHECK( !print_out_template(se8n_type(), se8n_type::bit_count,
|
||||
"an exact_integral<", ", signed>") );
|
||||
|
||||
BOOST_CHECK( !print_out_exact_signed(integral_c<int, se3_type::bit_count>(),
|
||||
se3_type::bit_count) );
|
||||
BOOST_CHECK( !print_out_exact_signed(integral_c<int, se0_type::bit_count>(),
|
||||
se0_type::bit_count) );
|
||||
BOOST_CHECK( !print_out_exact_signed(integral_c<int, se3n_type::bit_count>(),
|
||||
se3n_type::bit_count) );
|
||||
typedef unsigned_exact_integral< CHAR_BIT > ue8_type;
|
||||
typedef unsigned_exact_integral< 3> ue3_type;
|
||||
typedef unsigned_exact_integral< 0> ue0_type;
|
||||
typedef unsigned_exact_integral<-3> ue3n_type;
|
||||
typedef unsigned_exact_integral< - CHAR_BIT > ue8n_type;
|
||||
|
||||
typedef exact_integral< 3, unsigned> ue3_type;
|
||||
typedef exact_integral< 0, unsigned> ue0_type;
|
||||
typedef exact_integral<-3, unsigned> ue3n_type;
|
||||
BOOST_CHECK( print_out_template(ue8_type(), ue8_type::bit_count,
|
||||
"an exact_integral<", ", unsigned>") );
|
||||
BOOST_CHECK( !print_out_template(ue3_type(), ue3_type::bit_count,
|
||||
"an exact_integral<", ", unsigned>") );
|
||||
BOOST_CHECK( !print_out_template(ue0_type(), ue0_type::bit_count,
|
||||
"an exact_integral<", ", unsigned>") );
|
||||
BOOST_CHECK( !print_out_template(ue3n_type(), ue3n_type::bit_count,
|
||||
"an exact_integral<", ", unsigned>") );
|
||||
BOOST_CHECK( !print_out_template(ue8n_type(), ue8n_type::bit_count,
|
||||
"an exact_integral<", ", unsigned>") );
|
||||
|
||||
BOOST_CHECK( !print_out_exact_unsigned(integral_c<int, ue3_type::bit_count>(),
|
||||
ue3_type::bit_count) );
|
||||
BOOST_CHECK( !print_out_exact_unsigned(integral_c<int, ue0_type::bit_count>(),
|
||||
ue0_type::bit_count) );
|
||||
BOOST_CHECK( !print_out_exact_unsigned(integral_c<int, ue3n_type::bit_count>(),
|
||||
ue3n_type::bit_count) );
|
||||
typedef boost::maximum_signed_integral< 15> max15_type;
|
||||
typedef boost::maximum_signed_integral< 0> max0_type;
|
||||
typedef boost::maximum_signed_integral<-15> max15n_type;
|
||||
|
||||
typedef maximum_signed_integral< 15> max15_type;
|
||||
typedef maximum_signed_integral< 0> max0_type;
|
||||
typedef maximum_signed_integral<-15> max15n_type;
|
||||
BOOST_CHECK( print_out_template(max15_type(), max15_type::bound,
|
||||
"a maximum_signed_integral<", ">") );
|
||||
BOOST_CHECK( !print_out_template(max0_type(), max0_type::bound,
|
||||
"a maximum_signed_integral<", ">") );
|
||||
BOOST_CHECK( !print_out_template(max15n_type(), max15n_type::bound,
|
||||
"a maximum_signed_integral<", ">") );
|
||||
|
||||
BOOST_CHECK( print_out_maximum_signed(max15_type(), max15_type::bound) );
|
||||
BOOST_CHECK( !print_out_maximum_signed(max0_type(), max0_type::bound) );
|
||||
BOOST_CHECK( !print_out_maximum_signed(max15n_type(), max15n_type::bound) );
|
||||
typedef boost::minimum_signed_integral< 15> min15_type;
|
||||
typedef boost::minimum_signed_integral< 0> min0_type;
|
||||
typedef boost::minimum_signed_integral<-15> min15n_type;
|
||||
|
||||
typedef minimum_signed_integral< 15> min15_type;
|
||||
typedef minimum_signed_integral< 0> min0_type;
|
||||
typedef minimum_signed_integral<-15> min15n_type;
|
||||
BOOST_CHECK( !print_out_template(min15_type(), min15_type::bound,
|
||||
"a minimum_signed_integral<", ">") );
|
||||
BOOST_CHECK( !print_out_template(min0_type(), min0_type::bound,
|
||||
"a minimum_signed_integral<", ">") );
|
||||
BOOST_CHECK( print_out_template(min15n_type(), min15n_type::bound,
|
||||
"a minimum_signed_integral<", ">") );
|
||||
|
||||
BOOST_CHECK( !print_out_minimum_signed(min15_type(), min15_type::bound) );
|
||||
BOOST_CHECK( !print_out_minimum_signed(min0_type(), min0_type::bound) );
|
||||
BOOST_CHECK( print_out_minimum_signed(min15n_type(), min15n_type::bound) );
|
||||
typedef boost::maximum_unsigned_integral<15> umax15_type;
|
||||
typedef boost::maximum_unsigned_integral< 0> umax0_type;
|
||||
|
||||
typedef maximum_unsigned_integral<15> umax15_type;
|
||||
typedef maximum_unsigned_integral< 0> umax0_type;
|
||||
|
||||
BOOST_CHECK( print_out_maximum_unsigned(umax15_type(), umax15_type::bound) );
|
||||
BOOST_CHECK( print_out_maximum_unsigned(umax0_type(), umax0_type::bound) );
|
||||
BOOST_CHECK( print_out_template(umax15_type(), umax15_type::bound,
|
||||
"a maximum_unsigned_integral<", ">") );
|
||||
BOOST_CHECK( print_out_template(umax0_type(), umax0_type::bound,
|
||||
"a maximum_unsigned_integral<", ">") );
|
||||
}
|
||||
|
||||
BOOST_AUTO_TEST_SUITE_END()
|
||||
@ -666,7 +541,7 @@ BOOST_AUTO_TEST_SUITE( fit_type_tests )
|
||||
|
||||
// Check if large value can fit its minimum required size, by size
|
||||
BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_masked_values_test, T,
|
||||
valid_bits_list )
|
||||
valid_to_decrease_bits_list )
|
||||
{
|
||||
// This test is supposed to replace the following checks given in
|
||||
// puesdo-code by:
|
||||
@ -681,58 +556,42 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_masked_values_test, T,
|
||||
// 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.
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using boost::sized_integral;
|
||||
using boost::uint_t;
|
||||
using boost::int_t;
|
||||
#else
|
||||
using namespace boost;
|
||||
#endif
|
||||
|
||||
int const count = T::value, shift = uintmax_bits - count;
|
||||
static int const count = T::value;
|
||||
int const 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 sized_integral<count, unsigned>::type(value_u)),
|
||||
value_u );
|
||||
BOOST_CHECK_EQUAL( typename uint_t<count - 1>::least(value_u >> 1), value_u
|
||||
>> 1 );
|
||||
BOOST_CHECK_EQUAL( typename uint_t<count>::fast(value_u), value_u );
|
||||
BOOST_CHECK_EQUAL( typename uint_t<count - 1>::fast(value_u >> 1), value_u
|
||||
>> 1 );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
unsigned_sized_integral<count>::type>(value_u), value_u );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
boost::uint_t<count>::least>(value_u), value_u );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
boost::uint_t<count>::fast>(value_u), value_u );
|
||||
|
||||
BOOST_CHECK_EQUAL( typename int_t<count>::least(value_s), value_s );
|
||||
BOOST_CHECK_EQUAL( (typename sized_integral<count - 1, signed>::type(value_s
|
||||
>> 1)), value_s >> 1 );
|
||||
BOOST_CHECK_EQUAL( typename int_t<count>::fast(value_s), value_s );
|
||||
BOOST_CHECK_EQUAL( typename int_t<count - 1>::fast(value_s >> 1), value_s >>
|
||||
1 );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
signed_sized_integral<count>::type>(value_s), value_s );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
boost::int_t<count>::least>(value_s), value_s );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
boost::int_t<count>::fast>(value_s), value_s );
|
||||
}
|
||||
|
||||
// Check if a large value can only fit of its exact bit length
|
||||
BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_exact_lengths_test, T,
|
||||
distinct_integral_bit_counts )
|
||||
{
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using boost::exact_integral;
|
||||
#else
|
||||
using namespace boost;
|
||||
#endif
|
||||
|
||||
typedef typename exact_integral<T::value, unsigned>::type uexact_type;
|
||||
typedef typename exact_integral<T::value, signed>::type sexact_type;
|
||||
|
||||
uexact_type const one_u( 1u ), high_bit_u( one_u << (T::value - 1) ),
|
||||
repeated_bits_u( (high_bit_u << 1) | high_bit_u );
|
||||
typename boost::exact_integral<T::value, unsigned>::type const one_u( 1u ),
|
||||
high_bit_u( one_u << (T::value - 1) ), repeated_bits_u( (high_bit_u << 1) |
|
||||
high_bit_u );
|
||||
|
||||
BOOST_CHECK( high_bit_u );
|
||||
BOOST_CHECK_EQUAL( repeated_bits_u, high_bit_u );
|
||||
|
||||
sexact_type const one_s( 1 ), high_bit_s( one_s << (T::value - 2) ),
|
||||
repeated_bits_s( (high_bit_s << 1) | high_bit_s ),
|
||||
repeated_2bits_s( (repeated_bits_s << 1) | high_bit_s );
|
||||
typename boost::exact_integral<T::value, signed>::type const one_s( 1 ),
|
||||
high_bit_s( one_s << (T::value - 2) ), repeated_bits_s( (high_bit_s << 1) |
|
||||
high_bit_s ), repeated_2bits_s( (repeated_bits_s << 1) | high_bit_s );
|
||||
|
||||
BOOST_CHECK( high_bit_s > 0 );
|
||||
BOOST_CHECK( repeated_bits_s < 0 );
|
||||
@ -757,21 +616,14 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_shifted_unsigned_values_test, T,
|
||||
// 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;
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using boost::uint_value_t;
|
||||
#else
|
||||
using namespace boost;
|
||||
#endif
|
||||
|
||||
uintmax_t const max_u = boost::integer_traits<uintmax_t>::const_max >>
|
||||
T::value;
|
||||
static uintmax_t const maxi = boost::integer_traits<uintmax_t>::const_max
|
||||
>> T::value;
|
||||
|
||||
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),
|
||||
max_u >> 1 );
|
||||
BOOST_CHECK_EQUAL( typename uint_value_t<max_u>::fast(max_u), max_u );
|
||||
BOOST_CHECK_EQUAL( typename uint_value_t<(max_u >> 1)>::fast(max_u >> 1),
|
||||
max_u >> 1 );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
boost::uint_value_t<maxi>::least>(maxi), maxi );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
boost::uint_value_t<maxi>::fast>(maxi), maxi );
|
||||
}
|
||||
|
||||
// Check if large value can fit its minimum required size, by value, signed
|
||||
@ -793,31 +645,21 @@ BOOST_AUTO_TEST_CASE_TEMPLATE( fit_for_shifted_signed_values_test, T,
|
||||
// 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::intmax_t;
|
||||
#ifndef BOOST_NO_USING_TEMPLATE
|
||||
using boost::integer_traits;
|
||||
using boost::int_max_value_t;
|
||||
using boost::int_min_value_t;
|
||||
#else
|
||||
using namespace boost;
|
||||
#endif
|
||||
|
||||
int const shift = T::value;
|
||||
intmax_t const max_s = integer_traits<intmax_t>::const_max >> shift,
|
||||
min_s = integer_traits<intmax_t>::const_min >> shift;
|
||||
typedef boost::integer_traits<intmax_t> intmax_traits;
|
||||
|
||||
BOOST_CHECK_EQUAL( typename int_max_value_t<max_s>::least(max_s), max_s );
|
||||
BOOST_CHECK_EQUAL( typename int_max_value_t<(max_s >> 1)>::least(max_s >>
|
||||
1), max_s >> 1 );
|
||||
BOOST_CHECK_EQUAL( typename int_max_value_t<max_s>::fast(max_s), max_s );
|
||||
BOOST_CHECK_EQUAL( typename int_max_value_t<(max_s >> 1)>::fast(max_s >> 1),
|
||||
max_s >> 1 );
|
||||
static intmax_t const maxi = intmax_traits::const_max >> T::value,
|
||||
mini = intmax_traits::const_min >> T::value;
|
||||
|
||||
BOOST_CHECK_EQUAL( typename int_min_value_t<min_s>::least(min_s), min_s );
|
||||
BOOST_CHECK_EQUAL( typename int_min_value_t<(min_s >> 1)>::least(min_s >>
|
||||
1), min_s >> 1 );
|
||||
BOOST_CHECK_EQUAL( typename int_min_value_t<min_s>::fast(min_s), min_s );
|
||||
BOOST_CHECK_EQUAL( typename int_min_value_t<(min_s >> 1)>::fast(min_s >> 1),
|
||||
min_s >> 1 );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
boost::int_max_value_t<maxi>::least>(maxi), maxi );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
boost::int_max_value_t<maxi>::fast>(maxi), maxi );
|
||||
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
boost::int_min_value_t<mini>::least>(mini), mini );
|
||||
BOOST_CHECK_EQUAL( static_cast<typename
|
||||
boost::int_min_value_t<mini>::fast>(mini), mini );
|
||||
}
|
||||
|
||||
BOOST_AUTO_TEST_SUITE_END()
|
||||
|
||||
Reference in New Issue
Block a user