libs/integer/test/cstdint_test.cpp
// 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(); }