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source: downloads/boost_1_33_1/libs/integer/cstdint_test.cpp @ 13

Last change on this file since 13 was 12, checked in by landauf, 18 years ago

added boost
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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#define __STDC_CONSTANT_MACROS
16#include <cassert>
17#include <iostream>
18#include <boost/cstdint.hpp>
19
20#ifdef NDEBUG
21int main()
22{
23  std::cout << "This test makes no sense with NDEBUG defined.\n";
24  return 0;
25}
26#else
27
28#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
29//
30// the following class is designed to verify
31// that the various INTXX_C macros can be used
32// in integral constant expressions:
33//
34struct integral_constant_checker
35{
36  static const boost::int8_t          int8          = INT8_C(-127);
37  static const boost::int_least8_t    int_least8    = INT8_C(-127);
38  static const boost::int_fast8_t     int_fast8     = INT8_C(-127);
39
40  static const boost::uint8_t         uint8         = UINT8_C(255);
41  static const boost::uint_least8_t   uint_least8   = UINT8_C(255);
42  static const boost::uint_fast8_t    uint_fast8    = UINT8_C(255);
43
44  static const boost::int16_t         int16         = INT16_C(-32767);
45  static const boost::int_least16_t   int_least16   = INT16_C(-32767);
46  static const boost::int_fast16_t    int_fast16    = INT16_C(-32767);
47
48  static const boost::uint16_t        uint16         = UINT16_C(65535);
49  static const boost::uint_least16_t  uint_least16   = UINT16_C(65535);
50  static const boost::uint_fast16_t   uint_fast16    = UINT16_C(65535);
51
52  static const boost::int32_t         int32         = INT32_C(-2147483647);
53  static const boost::int_least32_t   int_least32   = INT32_C(-2147483647);
54  static const boost::int_fast32_t    int_fast32    = INT32_C(-2147483647);
55
56  static const boost::uint32_t        uint32        = UINT32_C(4294967295);
57  static const boost::uint_least32_t  uint_least32  = UINT32_C(4294967295);
58  static const boost::uint_fast32_t   uint_fast32   = UINT32_C(4294967295);
59
60  static void check();
61};
62
63void integral_constant_checker::check()
64{
65  assert( int8 == -127 );
66  assert( int_least8 == -127 );
67  assert( int_fast8 == -127 );
68  assert( uint8 == 255u );
69  assert( uint_least8 == 255u );
70  assert( uint_fast8 == 255u );
71  assert( int16 == -32767 );
72  assert( int_least16 == -32767 );
73  assert( int_fast16 == -32767 );
74  assert( uint16 == 65535u );
75  assert( uint_least16 == 65535u );
76  assert( uint_fast16 == 65535u );
77  assert( int32 == -2147483647 );
78  assert( int_least32 == -2147483647 );
79  assert( int_fast32 == -2147483647 );
80  assert( uint32 == 4294967295u );
81  assert( uint_least32 == 4294967295u );
82  assert( uint_fast32 == 4294967295u );
83}
84#endif // BOOST_NO_INCLASS_MEMBER_INITIALIZATION
85
86//
87// the following function simply verifies that the type
88// of an integral constant is correctly defined:
89//
90#ifdef __BORLANDC__
91#pragma option -w-8008
92#pragma option -w-8066
93#endif
94template <class T1, class T2>
95void integral_constant_type_check(T1, T2)
96{
97   //
98   // the types T1 and T2 may not be exactly
99   // the same type, but they should be the
100   // same size and signedness. We could use
101   // numeric_limits to verify this, but
102   // numeric_limits implementations currently
103   // vary too much, or are incomplete or missing.
104   //
105   T1 t1 = static_cast<T1>(-1);  // cast suppresses warnings
106   T2 t2 = static_cast<T2>(-1);  // ditto
107#if defined(BOOST_HAS_STDINT_H)
108   // if we have a native stdint.h
109   // then the INTXX_C macros may define
110   // a type that's wider than required:
111   assert(sizeof(T1) <= sizeof(T2));
112#else
113   assert(sizeof(T1) == sizeof(T2));
114   assert(t1 == t2);
115#endif
116   if(t1 > 0)
117     assert(t2 > 0);
118   else
119     assert(!(t2 > 0));
120}
121
122
123int main()
124{
125#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
126  integral_constant_checker::check();
127#endif
128  //
129  // verify the types of the integral constants:
130  //
131  integral_constant_type_check(boost::int8_t(0), INT8_C(0));
132  integral_constant_type_check(boost::uint8_t(0), UINT8_C(0));
133  integral_constant_type_check(boost::int16_t(0), INT16_C(0));
134  integral_constant_type_check(boost::uint16_t(0), UINT16_C(0));
135  integral_constant_type_check(boost::int32_t(0), INT32_C(0));
136  integral_constant_type_check(boost::uint32_t(0), UINT32_C(0));
137#ifndef BOOST_NO_INT64_T
138  integral_constant_type_check(boost::int64_t(0), INT64_C(0));
139  integral_constant_type_check(boost::uint64_t(0), UINT64_C(0));
140#endif
141  //
142  boost::int8_t          int8          = INT8_C(-127);
143  boost::int_least8_t    int_least8    = INT8_C(-127);
144  boost::int_fast8_t     int_fast8     = INT8_C(-127);
145
146  boost::uint8_t         uint8         = UINT8_C(255);
147  boost::uint_least8_t   uint_least8   = UINT8_C(255);
148  boost::uint_fast8_t    uint_fast8    = UINT8_C(255);
149
150  boost::int16_t         int16         = INT16_C(-32767);
151  boost::int_least16_t   int_least16   = INT16_C(-32767);
152  boost::int_fast16_t    int_fast16    = INT16_C(-32767);
153
154  boost::uint16_t        uint16         = UINT16_C(65535);
155  boost::uint_least16_t  uint_least16   = UINT16_C(65535);
156  boost::uint_fast16_t   uint_fast16    = UINT16_C(65535);
157
158  boost::int32_t         int32         = INT32_C(-2147483647);
159  boost::int_least32_t   int_least32   = INT32_C(-2147483647);
160  boost::int_fast32_t    int_fast32    = INT32_C(-2147483647);
161
162  boost::uint32_t        uint32        = UINT32_C(4294967295);
163  boost::uint_least32_t  uint_least32  = UINT32_C(4294967295);
164  boost::uint_fast32_t   uint_fast32   = UINT32_C(4294967295);
165
166#ifndef BOOST_NO_INT64_T
167  boost::int64_t         int64         = INT64_C(-9223372036854775807);
168  boost::int_least64_t   int_least64   = INT64_C(-9223372036854775807);
169  boost::int_fast64_t    int_fast64    = INT64_C(-9223372036854775807);
170
171  boost::uint64_t        uint64        = UINT64_C(18446744073709551615);
172  boost::uint_least64_t  uint_least64  = UINT64_C(18446744073709551615);
173  boost::uint_fast64_t   uint_fast64   = UINT64_C(18446744073709551615);
174
175  boost::intmax_t        intmax        = INTMAX_C(-9223372036854775807);
176  boost::uintmax_t       uintmax       = UINTMAX_C(18446744073709551615);
177#else
178  boost::intmax_t        intmax        = INTMAX_C(-2147483647);
179  boost::uintmax_t       uintmax       = UINTMAX_C(4294967295);
180#endif
181
182  assert( int8 == -127 );
183  assert( int_least8 == -127 );
184  assert( int_fast8 == -127 );
185  assert( uint8 == 255u );
186  assert( uint_least8 == 255u );
187  assert( uint_fast8 == 255u );
188  assert( int16 == -32767 );
189  assert( int_least16 == -32767 );
190  assert( int_fast16 == -32767 );
191  assert( uint16 == 65535u );
192  assert( uint_least16 == 65535u );
193  assert( uint_fast16 == 65535u );
194  assert( int32 == -2147483647 );
195  assert( int_least32 == -2147483647 );
196  assert( int_fast32 == -2147483647 );
197  assert( uint32 == 4294967295u );
198  assert( uint_least32 == 4294967295u );
199  assert( uint_fast32 == 4294967295u );
200
201#ifndef BOOST_NO_INT64_T
202  assert( int64 == INT64_C(-9223372036854775807) );
203  assert( int_least64 == INT64_C(-9223372036854775807) );
204  assert( int_fast64 == INT64_C(-9223372036854775807) );
205  assert( uint64 == UINT64_C(18446744073709551615) );
206  assert( uint_least64 == UINT64_C(18446744073709551615) );
207  assert( uint_fast64 == UINT64_C(18446744073709551615) );
208  assert( intmax == INT64_C(-9223372036854775807) );
209  assert( uintmax == UINT64_C(18446744073709551615) );
210#else
211  assert( intmax == -2147483647 );
212  assert( uintmax == 4294967295u );
213#endif
214
215
216  std::cout << "OK\n";
217  return 0;
218}
219#endif
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