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Reverted Integer back to Release branch state - as per devel-list discussions.

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[SVN r57580]
This commit is contained in:
John Maddock
2009-11-11 18:57:24 +00:00
parent fd0a8f8c2c
commit eecbd5276f
12 changed files with 619 additions and 1875 deletions
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test/integer_mask_test.cpp
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@ -8,149 +8,103 @@
// See http://www.boost.org for most recent version including documentation.
// Revision History
// 29 Jul 2008 Added MPL-compatible variants of the integer-mask templates.
// (Daryle Walker)
// 27 Jul 2008 Changed tests to use the unit-test system; added
// extended-integer support. (Daryle Walker)
// 23 Sep 2001 Initial version (Daryle Walker)
#define BOOST_TEST_MODULE "Integer mask tests"
#include <boost/test/unit_test.hpp> // unit testing framework
#include <boost/test/minimal.hpp> // for main
#include <boost/cstdint.hpp> // for boost::uintmax_t
#include <boost/cstdlib.hpp> // for boost::exit_success
#include <boost/integer/integer_mask.hpp> // for boost::high_bit_mask_t, etc.
#include <boost/limits.hpp> // for std::numeric_limits
#include <boost/mpl/assert.hpp> // for BOOST_MPL_ASSERT_RELATION,etc.
#include <boost/mpl/bool.hpp> // for boost::mpl::bool_
#include <boost/mpl/bitwise.hpp> // for boost::mpl::bitor_, shift_left
#include <boost/mpl/equal_to.hpp> // for boost::mpl::equal_to
#include <boost/mpl/int.hpp> // for boost::mpl::int_
#include <boost/mpl/integral_c.hpp> // for boost::mpl::integral_c
#include <boost/mpl/next_prior.hpp> // for boost::mpl::prior
#include <boost/mpl/range_c.hpp> // for boost::mpl::range_c
#include <cstddef> // for std::size_t
#include <ios> // for std::hex
#include <iostream> // for std::cout (std::endl indirectly)
// Custom types/templates, helper functions, and objects
namespace
#define PRIVATE_HIGH_BIT_SLOW_TEST(v) BOOST_CHECK( ::boost::high_bit_mask_t< \
(v) >::high_bit == (1ul << (v)) );
#define PRIVATE_HIGH_BIT_FAST_TEST(v) BOOST_CHECK( ::boost::high_bit_mask_t< \
(v) >::high_bit_fast == (1ul << (v)) );
#define PRIVATE_HIGH_BIT_TEST(v) do { PRIVATE_HIGH_BIT_SLOW_TEST(v); \
PRIVATE_HIGH_BIT_FAST_TEST(v); } while (false)
#define PRIVATE_LOW_BITS_SLOW_TEST(v) BOOST_CHECK( ::boost::low_bits_mask_t< \
(v) >::sig_bits == ((1ul << (v)) - 1) );
#define PRIVATE_LOW_BITS_FAST_TEST(v) BOOST_CHECK( ::boost::low_bits_mask_t< \
(v) >::sig_bits_fast == ((1ul << (v)) - 1) );
#define PRIVATE_LOW_BITS_TEST(v) do { PRIVATE_LOW_BITS_SLOW_TEST(v); \
PRIVATE_LOW_BITS_FAST_TEST(v); } while (false)
int test_main( int, char*[] )
{
using std::cout;
using std::endl;
// List the ranges of template parameters tests (ranges are half-open)
int const max_offset = std::numeric_limits<boost::uintmax_t>::digits;
cout << "Doing high_bit_mask_t tests." << endl;
PRIVATE_HIGH_BIT_TEST( 31 );
PRIVATE_HIGH_BIT_TEST( 30 );
PRIVATE_HIGH_BIT_TEST( 29 );
PRIVATE_HIGH_BIT_TEST( 28 );
PRIVATE_HIGH_BIT_TEST( 27 );
PRIVATE_HIGH_BIT_TEST( 26 );
PRIVATE_HIGH_BIT_TEST( 25 );
PRIVATE_HIGH_BIT_TEST( 24 );
PRIVATE_HIGH_BIT_TEST( 23 );
PRIVATE_HIGH_BIT_TEST( 22 );
PRIVATE_HIGH_BIT_TEST( 21 );
PRIVATE_HIGH_BIT_TEST( 20 );
PRIVATE_HIGH_BIT_TEST( 19 );
PRIVATE_HIGH_BIT_TEST( 18 );
PRIVATE_HIGH_BIT_TEST( 17 );
PRIVATE_HIGH_BIT_TEST( 16 );
PRIVATE_HIGH_BIT_TEST( 15 );
PRIVATE_HIGH_BIT_TEST( 14 );
PRIVATE_HIGH_BIT_TEST( 13 );
PRIVATE_HIGH_BIT_TEST( 12 );
PRIVATE_HIGH_BIT_TEST( 11 );
PRIVATE_HIGH_BIT_TEST( 10 );
PRIVATE_HIGH_BIT_TEST( 9 );
PRIVATE_HIGH_BIT_TEST( 8 );
PRIVATE_HIGH_BIT_TEST( 7 );
PRIVATE_HIGH_BIT_TEST( 6 );
PRIVATE_HIGH_BIT_TEST( 5 );
PRIVATE_HIGH_BIT_TEST( 4 );
PRIVATE_HIGH_BIT_TEST( 3 );
PRIVATE_HIGH_BIT_TEST( 2 );
PRIVATE_HIGH_BIT_TEST( 1 );
PRIVATE_HIGH_BIT_TEST( 0 );
typedef boost::mpl::range_c<int, 0, max_offset> high_bit_offsets;
typedef boost::mpl::range_c<int, 0, max_offset + 1> low_bit_lengths;
typedef boost::mpl::range_c<int, 1, max_offset + 1> special_low_bit_lengths;
cout << "Doing low_bits_mask_t tests." << endl;
PRIVATE_LOW_BITS_TEST( 32 ); // Undefined behavior? Whoops!
PRIVATE_LOW_BITS_TEST( 31 );
PRIVATE_LOW_BITS_TEST( 30 );
PRIVATE_LOW_BITS_TEST( 29 );
PRIVATE_LOW_BITS_TEST( 28 );
PRIVATE_LOW_BITS_TEST( 27 );
PRIVATE_LOW_BITS_TEST( 26 );
PRIVATE_LOW_BITS_TEST( 25 );
PRIVATE_LOW_BITS_TEST( 24 );
PRIVATE_LOW_BITS_TEST( 23 );
PRIVATE_LOW_BITS_TEST( 22 );
PRIVATE_LOW_BITS_TEST( 21 );
PRIVATE_LOW_BITS_TEST( 20 );
PRIVATE_LOW_BITS_TEST( 19 );
PRIVATE_LOW_BITS_TEST( 18 );
PRIVATE_LOW_BITS_TEST( 17 );
PRIVATE_LOW_BITS_TEST( 16 );
PRIVATE_LOW_BITS_TEST( 15 );
PRIVATE_LOW_BITS_TEST( 14 );
PRIVATE_LOW_BITS_TEST( 13 );
PRIVATE_LOW_BITS_TEST( 12 );
PRIVATE_LOW_BITS_TEST( 11 );
PRIVATE_LOW_BITS_TEST( 10 );
PRIVATE_LOW_BITS_TEST( 9 );
PRIVATE_LOW_BITS_TEST( 8 );
PRIVATE_LOW_BITS_TEST( 7 );
PRIVATE_LOW_BITS_TEST( 6 );
PRIVATE_LOW_BITS_TEST( 5 );
PRIVATE_LOW_BITS_TEST( 4 );
PRIVATE_LOW_BITS_TEST( 3 );
PRIVATE_LOW_BITS_TEST( 2 );
PRIVATE_LOW_BITS_TEST( 1 );
// List a range with out-of-service values
typedef boost::mpl::range_c<int, -10, max_offset + 11> wild_bit_lengths;
// Use SFINAE to check if a particular parameter is supported
template < typename ValueT, template<ValueT> class Tmpl, ValueT Value >
bool
print_out_template( Tmpl<Value> const &, ValueT setting, char const
*template_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).
BOOST_TEST_MESSAGE( "There is an " << template_name << "<" << setting <<
"> specialization with type '" << typeid(typename
Tmpl<Value>::value_type).name() << "' and value '" << std::hex <<
Tmpl<Value>::value << "'." );
return true;
return boost::exit_success;
}
template < typename ValueT, typename T >
bool
print_out_template( T const &, ValueT setting, char const *template_name )
{
BOOST_TEST_MESSAGE( "There is no " << template_name << "<" << setting <<
"> specialization." );
return false;
}
} // unnamed namespace
// Check the various integer-valued bit-masks
BOOST_AUTO_TEST_SUITE( integer_mask_tests )
// Check the bit-masks of one offset bit
BOOST_AUTO_TEST_CASE_TEMPLATE( high_bit_mask_test, T, high_bit_offsets )
{
typedef boost::mpl::integral_c<typename
boost::high_bit_mask_t<T::value>::least, 1u> one_type;
typedef boost::mpl::shift_left<one_type, T> result_type;
BOOST_MPL_ASSERT_RELATION( boost::high_bit_mask_t<T::value>::high_bit, ==,
result_type::value );
BOOST_MPL_ASSERT_RELATION( boost::high_bit_mask_t<T::value>::high_bit_fast,
==, result_type::value );
}
// Check the bit-masks of a block of low-valued bits, non-zero block-lengths
BOOST_AUTO_TEST_CASE_TEMPLATE( low_bits_mask_test, T, special_low_bit_lengths )
{
// One can express (2^x - 1) in two ways
// 1. (1 << x) - 1
// 2. (1 << (x-1)) | ((1 << (x-1)) - 1)
// Since unsigneds have modulo arithmetic, [1] gives the right answer even
// when x is the number of bits in the register. However, that last case
// gives warnings about the sole bit flowing past the register. Applying
// distributive property backwards gives [2], which works without overflow.
typedef typename boost::mpl::prior<T>::type shift_type;
typedef boost::mpl::integral_c<typename
boost::low_bits_mask_t<T::value>::least, 1u> one_type;
typedef boost::mpl::shift_left<one_type, shift_type> high_bit_type;
typedef typename boost::mpl::prior<high_bit_type>::type low_bits_type;
typedef boost::mpl::bitor_<high_bit_type, low_bits_type> result_type;
BOOST_MPL_ASSERT_RELATION( boost::low_bits_mask_t<T::value>::sig_bits, ==,
result_type::value );
BOOST_MPL_ASSERT_RELATION( boost::low_bits_mask_t<T::value>::sig_bits_fast,
==, result_type::value );
}
// Check the bit-masks of a block of low-valued bits, zero block-length
BOOST_AUTO_TEST_CASE( special_low_bits_mask_test )
{
// Just like "low_bits_mask_test" above, except that the shifts are negative
// when the bit-count is zero. That causes a lot of warnings and errors, so
// special-case that bit-count.
BOOST_MPL_ASSERT_RELATION( boost::low_bits_mask_t<0u>::sig_bits, ==, 0 );
BOOST_MPL_ASSERT_RELATION(boost::low_bits_mask_t<0u>::sig_bits_fast, ==, 0);
}
// Check the specialization type status of given bit-offsets/lengths
BOOST_AUTO_TEST_CASE_TEMPLATE( confirm_bounds_test, T, wild_bit_lengths )
{
typedef boost::integer_hi_mask<T::value> hi_type;
typedef boost::mpl::int_<hi_type::bit_offset> hi_offset_type;
typedef boost::mpl::bool_<hi_type::is_specialized> special_hi_type;
BOOST_MPL_ASSERT( (boost::mpl::equal_to< hi_offset_type, T >) );
BOOST_MPL_ASSERT( (boost::mpl::equal_to< special_hi_type,
boost::mpl::bool_<(T::value >= 0) && (T::value < max_offset)> >) );
BOOST_CHECK_EQUAL( print_out_template(hi_type(), hi_offset_type::value,
"integer_hi_mask"), special_hi_type::value );
typedef boost::integer_lo_mask<T::value> lo_type;
typedef boost::mpl::int_<lo_type::bit_count> lo_length_type;
typedef boost::mpl::bool_<lo_type::is_specialized> special_lo_type;
BOOST_MPL_ASSERT( (boost::mpl::equal_to< lo_length_type, T >) );
BOOST_MPL_ASSERT( (boost::mpl::equal_to< special_lo_type,
boost::mpl::bool_<(T::value >= 0) && (T::value <= max_offset)> >) );
BOOST_CHECK_EQUAL( print_out_template(lo_type(), lo_length_type::value,
"integer_lo_mask"), special_lo_type::value );
}
BOOST_AUTO_TEST_SUITE_END()
// Verification of bugs and their fixes
BOOST_AUTO_TEST_SUITE( bug_fix_tests )
BOOST_AUTO_TEST_SUITE_END()