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config/test/cstdint_test.cpp
Glen Fernandes 98194c6309 Move cstdint tests to this module
2014-06-01 00:29:04 -07:00

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// boost cstdint.hpp test program ------------------------------------------//
// Copyright Beman Dawes 2000. 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_0.txt)
// See http://www.boost.org/libs/integer for documentation.
// Revision History
// 11 Sep 01 Adapted to work with macros defined in native stdint.h (John Maddock)
// 12 Nov 00 Adapted to merged <boost/cstdint.hpp>
// 23 Sep 00 Added INTXX_C constant macro support + int64_t support (John Maddock).
// 28 Jun 00 Initial version
//
// There are two ways to test this: in version 1, we include cstdint.hpp as the first
// include, which means we get decide whether __STDC_CONSTANT_MACROS is defined.
// In version two we include stdint.h with __STDC_CONSTANT_MACROS *NOT* defined first,
// and check that we still end up with compatible definitions for the INT#_C macros.
//
// This is version 1.
//
#if defined(__GNUC__) && (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4))
// We can't suppress this warning on the command line as not all GCC versions support -Wno-type-limits :
#pragma GCC diagnostic ignored "-Wtype-limits"
#endif
#include <boost/cstdint.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <iostream>
#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
//
// the following class is designed to verify
// that the various INTXX_C macros can be used
// in integral constant expressions:
//
struct integral_constant_checker
{
static const boost::int8_t int8 = INT8_C(-127);
static const boost::int_least8_t int_least8 = INT8_C(-127);
static const boost::int_fast8_t int_fast8 = INT8_C(-127);
static const boost::uint8_t uint8 = UINT8_C(255);
static const boost::uint_least8_t uint_least8 = UINT8_C(255);
static const boost::uint_fast8_t uint_fast8 = UINT8_C(255);
static const boost::int16_t int16 = INT16_C(-32767);
static const boost::int_least16_t int_least16 = INT16_C(-32767);
static const boost::int_fast16_t int_fast16 = INT16_C(-32767);
static const boost::uint16_t uint16 = UINT16_C(65535);
static const boost::uint_least16_t uint_least16 = UINT16_C(65535);
static const boost::uint_fast16_t uint_fast16 = UINT16_C(65535);
static const boost::int32_t int32 = INT32_C(-2147483647);
static const boost::int_least32_t int_least32 = INT32_C(-2147483647);
static const boost::int_fast32_t int_fast32 = INT32_C(-2147483647);
static const boost::uint32_t uint32 = UINT32_C(4294967295);
static const boost::uint_least32_t uint_least32 = UINT32_C(4294967295);
static const boost::uint_fast32_t uint_fast32 = UINT32_C(4294967295);
static void check();
};
void integral_constant_checker::check()
{
BOOST_TEST( int8 == -127 );
BOOST_TEST( int_least8 == -127 );
BOOST_TEST( int_fast8 == -127 );
BOOST_TEST( uint8 == 255u );
BOOST_TEST( uint_least8 == 255u );
BOOST_TEST( uint_fast8 == 255u );
BOOST_TEST( int16 == -32767 );
BOOST_TEST( int_least16 == -32767 );
BOOST_TEST( int_fast16 == -32767 );
BOOST_TEST( uint16 == 65535u );
BOOST_TEST( uint_least16 == 65535u );
BOOST_TEST( uint_fast16 == 65535u );
BOOST_TEST( int32 == -2147483647 );
BOOST_TEST( int_least32 == -2147483647 );
BOOST_TEST( int_fast32 == -2147483647 );
BOOST_TEST( uint32 == 4294967295u );
BOOST_TEST( uint_least32 == 4294967295u );
BOOST_TEST( uint_fast32 == 4294967295u );
}
#endif // BOOST_NO_INCLASS_MEMBER_INITIALIZATION
//
// the following function simply verifies that the type
// of an integral constant is correctly defined:
//
#ifdef __BORLANDC__
#pragma option -w-8008
#pragma option -w-8066
#endif
template <class T1, class T2>
void integral_constant_type_check(T1, T2)
{
//
// the types T1 and T2 may not be exactly
// the same type, but they should be the
// same size and signedness. We could use
// numeric_limits to verify this, but
// numeric_limits implementations currently
// vary too much, or are incomplete or missing.
//
T1 t1 = static_cast<T1>(-1); // cast suppresses warnings
T2 t2 = static_cast<T2>(-1); // ditto
#if defined(BOOST_HAS_STDINT_H)
// if we have a native stdint.h
// then the INTXX_C macros may define
// a type that's wider than required:
BOOST_TEST(sizeof(T1) <= sizeof(T2));
#else
BOOST_TEST(sizeof(T1) == sizeof(T2));
BOOST_TEST(t1 == t2);
#endif
#if defined(BOOST_HAS_STDINT_H)
// native headers are permitted to promote small
// unsigned types to type int:
if(sizeof(T1) >= sizeof(int))
{
if(t1 > 0)
BOOST_TEST(t2 > 0);
else
BOOST_TEST(!(t2 > 0));
}
else if(t1 < 0)
BOOST_TEST(!(t2 > 0));
#else
if(t1 > 0)
BOOST_TEST(t2 > 0);
else
BOOST_TEST(!(t2 > 0));
#endif
}
int main(int, char*[])
{
#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
integral_constant_checker::check();
#endif
//
// verify the types of the integral constants:
//
integral_constant_type_check(boost::int8_t(0), INT8_C(0));
integral_constant_type_check(boost::uint8_t(0), UINT8_C(0));
integral_constant_type_check(boost::int16_t(0), INT16_C(0));
integral_constant_type_check(boost::uint16_t(0), UINT16_C(0));
integral_constant_type_check(boost::int32_t(0), INT32_C(0));
integral_constant_type_check(boost::uint32_t(0), UINT32_C(0));
#ifndef BOOST_NO_INT64_T
integral_constant_type_check(boost::int64_t(0), INT64_C(0));
integral_constant_type_check(boost::uint64_t(0), UINT64_C(0));
#endif
//
boost::int8_t int8 = INT8_C(-127);
boost::int_least8_t int_least8 = INT8_C(-127);
boost::int_fast8_t int_fast8 = INT8_C(-127);
boost::uint8_t uint8 = UINT8_C(255);
boost::uint_least8_t uint_least8 = UINT8_C(255);
boost::uint_fast8_t uint_fast8 = UINT8_C(255);
boost::int16_t int16 = INT16_C(-32767);
boost::int_least16_t int_least16 = INT16_C(-32767);
boost::int_fast16_t int_fast16 = INT16_C(-32767);
boost::uint16_t uint16 = UINT16_C(65535);
boost::uint_least16_t uint_least16 = UINT16_C(65535);
boost::uint_fast16_t uint_fast16 = UINT16_C(65535);
boost::int32_t int32 = INT32_C(-2147483647);
boost::int_least32_t int_least32 = INT32_C(-2147483647);
boost::int_fast32_t int_fast32 = INT32_C(-2147483647);
boost::uint32_t uint32 = UINT32_C(4294967295);
boost::uint_least32_t uint_least32 = UINT32_C(4294967295);
boost::uint_fast32_t uint_fast32 = UINT32_C(4294967295);
#ifndef BOOST_NO_INT64_T
boost::int64_t int64 = INT64_C(-9223372036854775807);
boost::int_least64_t int_least64 = INT64_C(-9223372036854775807);
boost::int_fast64_t int_fast64 = INT64_C(-9223372036854775807);
boost::uint64_t uint64 = UINT64_C(18446744073709551615);
boost::uint_least64_t uint_least64 = UINT64_C(18446744073709551615);
boost::uint_fast64_t uint_fast64 = UINT64_C(18446744073709551615);
boost::intmax_t intmax = INTMAX_C(-9223372036854775807);
boost::uintmax_t uintmax = UINTMAX_C(18446744073709551615);
#else
boost::intmax_t intmax = INTMAX_C(-2147483647);
boost::uintmax_t uintmax = UINTMAX_C(4294967295);
#endif
BOOST_TEST( int8 == -127 );
BOOST_TEST( int_least8 == -127 );
BOOST_TEST( int_fast8 == -127 );
BOOST_TEST( uint8 == 255u );
BOOST_TEST( uint_least8 == 255u );
BOOST_TEST( uint_fast8 == 255u );
BOOST_TEST( int16 == -32767 );
BOOST_TEST( int_least16 == -32767 );
BOOST_TEST( int_fast16 == -32767 );
BOOST_TEST( uint16 == 65535u );
BOOST_TEST( uint_least16 == 65535u );
BOOST_TEST( uint_fast16 == 65535u );
BOOST_TEST( int32 == -2147483647 );
BOOST_TEST( int_least32 == -2147483647 );
BOOST_TEST( int_fast32 == -2147483647 );
BOOST_TEST( uint32 == 4294967295u );
BOOST_TEST( uint_least32 == 4294967295u );
BOOST_TEST( uint_fast32 == 4294967295u );
#ifndef BOOST_NO_INT64_T
BOOST_TEST( int64 == INT64_C(-9223372036854775807) );
BOOST_TEST( int_least64 == INT64_C(-9223372036854775807) );
BOOST_TEST( int_fast64 == INT64_C(-9223372036854775807) );
BOOST_TEST( uint64 == UINT64_C(18446744073709551615) );
BOOST_TEST( uint_least64 == UINT64_C(18446744073709551615) );
BOOST_TEST( uint_fast64 == UINT64_C(18446744073709551615) );
BOOST_TEST( intmax == INT64_C(-9223372036854775807) );
BOOST_TEST( uintmax == UINT64_C(18446744073709551615) );
#else
BOOST_TEST( intmax == -2147483647 );
BOOST_TEST( uintmax == 4294967295u );
#endif
std::cout << "OK\n";
return boost::report_errors();
}
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