1 // boost cstdint.hpp test program ------------------------------------------//
2
3 // Copyright Beman Dawes 2000. Distributed under the Boost
4 // Software License, Version 1.0. (See accompanying file
5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6
7
8 // See http://www.boost.org/libs/integer for documentation.
9
10 // Revision History
11 // 11 Sep 01 Adapted to work with macros defined in native stdint.h (John Maddock)
12 // 12 Nov 00 Adapted to merged <boost/cstdint.hpp>
13 // 23 Sep 00 Added INTXX_C constant macro support + int64_t support (John Maddock).
14 // 28 Jun 00 Initial version
15
16 //
17 // There are two ways to test this: in version 1, we include cstdint.hpp as the first
18 // include, which means we get decide whether __STDC_CONSTANT_MACROS is defined.
19 // In version two we include stdint.h with __STDC_CONSTANT_MACROS *NOT* defined first,
20 // and check that we still end up with compatible definitions for the INT#_C macros.
21 //
22 // This is version 2.
23 //
24
25 #if defined(__GNUC__) && (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4))
26 // We can't suppress this warning on the command line as not all GCC versions support -Wno-type-limits :
27 #pragma GCC diagnostic ignored "-Wtype-limits"
28 #endif
29
30 #include <boost/config.hpp>
31
32 #ifdef BOOST_HAS_STDINT_H
33 #ifdef __hpux
34 # include <inttypes.h>
35 #else
36 # include <stdint.h>
37 #endif
38 #endif
39
40 #include <boost/cstdint.hpp>
41 #include <boost/detail/lightweight_test.hpp>
42 #include <iostream>
43
44 #ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
45 //
46 // the following class is designed to verify
47 // that the various INTXX_C macros can be used
48 // in integral constant expressions:
49 //
50 struct integral_constant_checker
51 {
52 static const boost::int8_t int8 = INT8_C(-127);
53 static const boost::int_least8_t int_least8 = INT8_C(-127);
54 static const boost::int_fast8_t int_fast8 = INT8_C(-127);
55
56 static const boost::uint8_t uint8 = UINT8_C(255);
57 static const boost::uint_least8_t uint_least8 = UINT8_C(255);
58 static const boost::uint_fast8_t uint_fast8 = UINT8_C(255);
59
60 static const boost::int16_t int16 = INT16_C(-32767);
61 static const boost::int_least16_t int_least16 = INT16_C(-32767);
62 static const boost::int_fast16_t int_fast16 = INT16_C(-32767);
63
64 static const boost::uint16_t uint16 = UINT16_C(65535);
65 static const boost::uint_least16_t uint_least16 = UINT16_C(65535);
66 static const boost::uint_fast16_t uint_fast16 = UINT16_C(65535);
67
68 static const boost::int32_t int32 = INT32_C(-2147483647);
69 static const boost::int_least32_t int_least32 = INT32_C(-2147483647);
70 static const boost::int_fast32_t int_fast32 = INT32_C(-2147483647);
71
72 static const boost::uint32_t uint32 = UINT32_C(4294967295);
73 static const boost::uint_least32_t uint_least32 = UINT32_C(4294967295);
74 static const boost::uint_fast32_t uint_fast32 = UINT32_C(4294967295);
75
76 static void check();
77 };
78
check()79 void integral_constant_checker::check()
80 {
81 BOOST_TEST( int8 == -127 );
82 BOOST_TEST( int_least8 == -127 );
83 BOOST_TEST( int_fast8 == -127 );
84 BOOST_TEST( uint8 == 255u );
85 BOOST_TEST( uint_least8 == 255u );
86 BOOST_TEST( uint_fast8 == 255u );
87 BOOST_TEST( int16 == -32767 );
88 BOOST_TEST( int_least16 == -32767 );
89 BOOST_TEST( int_fast16 == -32767 );
90 BOOST_TEST( uint16 == 65535u );
91 BOOST_TEST( uint_least16 == 65535u );
92 BOOST_TEST( uint_fast16 == 65535u );
93 BOOST_TEST( int32 == -2147483647 );
94 BOOST_TEST( int_least32 == -2147483647 );
95 BOOST_TEST( int_fast32 == -2147483647 );
96 BOOST_TEST( uint32 == 4294967295u );
97 BOOST_TEST( uint_least32 == 4294967295u );
98 BOOST_TEST( uint_fast32 == 4294967295u );
99 }
100 #endif // BOOST_NO_INCLASS_MEMBER_INITIALIZATION
101
102 //
103 // the following function simply verifies that the type
104 // of an integral constant is correctly defined:
105 //
106 #ifdef BOOST_BORLANDC
107 #pragma option -w-8008
108 #pragma option -w-8066
109 #endif
110 template <class T1, class T2>
integral_constant_type_check(T1,T2)111 void integral_constant_type_check(T1, T2)
112 {
113 //
114 // the types T1 and T2 may not be exactly
115 // the same type, but they should be the
116 // same size and signedness. We could use
117 // numeric_limits to verify this, but
118 // numeric_limits implementations currently
119 // vary too much, or are incomplete or missing.
120 //
121 T1 t1 = static_cast<T1>(-1); // cast suppresses warnings
122 T2 t2 = static_cast<T2>(-1); // ditto
123 #if defined(BOOST_HAS_STDINT_H)
124 // if we have a native stdint.h
125 // then the INTXX_C macros may define
126 // a type that's wider than required:
127 BOOST_TEST(sizeof(T1) <= sizeof(T2));
128 #else
129 BOOST_TEST(sizeof(T1) == sizeof(T2));
130 BOOST_TEST(t1 == t2);
131 #endif
132 #if defined(BOOST_HAS_STDINT_H)
133 // native headers are permitted to promote small
134 // unsigned types to type int:
135 if(sizeof(T1) >= sizeof(int))
136 {
137 if(t1 > 0)
138 BOOST_TEST(t2 > 0);
139 else
140 BOOST_TEST(!(t2 > 0));
141 }
142 else if(t1 < 0)
143 BOOST_TEST(!(t2 > 0));
144 #else
145 if(t1 > 0)
146 BOOST_TEST(t2 > 0);
147 else
148 BOOST_TEST(!(t2 > 0));
149 #endif
150 }
151
152
main(int,char * [])153 int main(int, char*[])
154 {
155 #ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
156 integral_constant_checker::check();
157 #endif
158 //
159 // verify the types of the integral constants:
160 //
161 integral_constant_type_check(boost::int8_t(0), INT8_C(0));
162 integral_constant_type_check(boost::uint8_t(0), UINT8_C(0));
163 integral_constant_type_check(boost::int16_t(0), INT16_C(0));
164 integral_constant_type_check(boost::uint16_t(0), UINT16_C(0));
165 integral_constant_type_check(boost::int32_t(0), INT32_C(0));
166 integral_constant_type_check(boost::uint32_t(0), UINT32_C(0));
167 #ifndef BOOST_NO_INT64_T
168 integral_constant_type_check(boost::int64_t(0), INT64_C(0));
169 integral_constant_type_check(boost::uint64_t(0), UINT64_C(0));
170 #endif
171 //
172 boost::int8_t int8 = INT8_C(-127);
173 boost::int_least8_t int_least8 = INT8_C(-127);
174 boost::int_fast8_t int_fast8 = INT8_C(-127);
175
176 boost::uint8_t uint8 = UINT8_C(255);
177 boost::uint_least8_t uint_least8 = UINT8_C(255);
178 boost::uint_fast8_t uint_fast8 = UINT8_C(255);
179
180 boost::int16_t int16 = INT16_C(-32767);
181 boost::int_least16_t int_least16 = INT16_C(-32767);
182 boost::int_fast16_t int_fast16 = INT16_C(-32767);
183
184 boost::uint16_t uint16 = UINT16_C(65535);
185 boost::uint_least16_t uint_least16 = UINT16_C(65535);
186 boost::uint_fast16_t uint_fast16 = UINT16_C(65535);
187
188 boost::int32_t int32 = INT32_C(-2147483647);
189 boost::int_least32_t int_least32 = INT32_C(-2147483647);
190 boost::int_fast32_t int_fast32 = INT32_C(-2147483647);
191
192 boost::uint32_t uint32 = UINT32_C(4294967295);
193 boost::uint_least32_t uint_least32 = UINT32_C(4294967295);
194 boost::uint_fast32_t uint_fast32 = UINT32_C(4294967295);
195
196 #ifndef BOOST_NO_INT64_T
197 boost::int64_t int64 = INT64_C(-9223372036854775807);
198 boost::int_least64_t int_least64 = INT64_C(-9223372036854775807);
199 boost::int_fast64_t int_fast64 = INT64_C(-9223372036854775807);
200
201 boost::uint64_t uint64 = UINT64_C(18446744073709551615);
202 boost::uint_least64_t uint_least64 = UINT64_C(18446744073709551615);
203 boost::uint_fast64_t uint_fast64 = UINT64_C(18446744073709551615);
204
205 boost::intmax_t intmax = INTMAX_C(-9223372036854775807);
206 boost::uintmax_t uintmax = UINTMAX_C(18446744073709551615);
207 #else
208 boost::intmax_t intmax = INTMAX_C(-2147483647);
209 boost::uintmax_t uintmax = UINTMAX_C(4294967295);
210 #endif
211
212 BOOST_TEST( int8 == -127 );
213 BOOST_TEST( int_least8 == -127 );
214 BOOST_TEST( int_fast8 == -127 );
215 BOOST_TEST( uint8 == 255u );
216 BOOST_TEST( uint_least8 == 255u );
217 BOOST_TEST( uint_fast8 == 255u );
218 BOOST_TEST( int16 == -32767 );
219 BOOST_TEST( int_least16 == -32767 );
220 BOOST_TEST( int_fast16 == -32767 );
221 BOOST_TEST( uint16 == 65535u );
222 BOOST_TEST( uint_least16 == 65535u );
223 BOOST_TEST( uint_fast16 == 65535u );
224 BOOST_TEST( int32 == -2147483647 );
225 BOOST_TEST( int_least32 == -2147483647 );
226 BOOST_TEST( int_fast32 == -2147483647 );
227 BOOST_TEST( uint32 == 4294967295u );
228 BOOST_TEST( uint_least32 == 4294967295u );
229 BOOST_TEST( uint_fast32 == 4294967295u );
230
231 #ifndef BOOST_NO_INT64_T
232 BOOST_TEST( int64 == INT64_C(-9223372036854775807) );
233 BOOST_TEST( int_least64 == INT64_C(-9223372036854775807) );
234 BOOST_TEST( int_fast64 == INT64_C(-9223372036854775807) );
235 BOOST_TEST( uint64 == UINT64_C(18446744073709551615) );
236 BOOST_TEST( uint_least64 == UINT64_C(18446744073709551615) );
237 BOOST_TEST( uint_fast64 == UINT64_C(18446744073709551615) );
238 BOOST_TEST( intmax == INT64_C(-9223372036854775807) );
239 BOOST_TEST( uintmax == UINT64_C(18446744073709551615) );
240 #else
241 BOOST_TEST( intmax == -2147483647 );
242 BOOST_TEST( uintmax == 4294967295u );
243 #endif
244
245
246 std::cout << "OK\n";
247 return boost::report_errors();
248 }
249