ceph/src/boost/libs/integer/test/integer_traits_test.cpp

   1 /* boost integer_traits.hpp tests
   2  *
   3  * Copyright Jens Maurer 2000
   4  * Distributed under the Boost Software License, Version 1.0. (See
   5  * accompanying file LICENSE_1_0.txt or copy at
   6  * http://www.boost.org/LICENSE_1_0.txt)
   7  *
   8  * $Id$
   9  *
  10  * Revision history
  11  *  2000-02-22  Small improvements by Beman Dawes
  12  *  2000-06-27  Rework for better MSVC and BCC co-operation
  13  */
  14
  15 #include <iostream>
  16 #include <boost/integer_traits.hpp>
  17 // use int64_t instead of long long for better portability
  18 #include <boost/cstdint.hpp>
  19
  20 #include <boost/detail/lightweight_test.hpp>
  21
  22 /*
  23  * General portability note:
  24  * MSVC mis-compiles explicit function template instantiations.
  25  * For example, f<A>() and f<B>() are both compiled to call f<A>().
  26  * BCC is unable to implicitly convert a "const char *" to a std::string
  27  * when using explicit function template instantiations.
  28  *
  29  * Therefore, avoid explicit function template instantiations.
  30  */
  31
  32 #if defined(BOOST_MSVC) && (BOOST_MSVC <= 1300)
  33 template<typename T> inline T make_char_numeric_for_streaming(T x) { return x; }
  34 namespace fix{
  35 inline int make_char_numeric_for_streaming(char c) { return c; }
  36 inline int make_char_numeric_for_streaming(signed char c) { return c; }
  37 inline int make_char_numeric_for_streaming(unsigned char c) { return c; }
  38 inline long long int make_char_numeric_for_streaming(wchar_t c) { return c; }
  39 }
  40 using namespace fix;
  41 #else
  42 template<typename T> inline T make_char_numeric_for_streaming(T x) { return x; }
  43 inline int make_char_numeric_for_streaming(char c) { return c; }
  44 inline int make_char_numeric_for_streaming(signed char c) { return c; }
  45 inline int make_char_numeric_for_streaming(unsigned char c) { return c; }
  46 inline long long int make_char_numeric_for_streaming(wchar_t c) { return c; }
  47 #endif
  48
  49 template<class T>
  50 void runtest(const char * type, T)
  51 {
  52   typedef boost::integer_traits<T> traits;
  53   std::cout << "Checking " << type
  54             << "; min is " << make_char_numeric_for_streaming((traits::min)())
  55             << ", max is " << make_char_numeric_for_streaming((traits::max)())
  56             << std::endl;
  57   BOOST_TEST(traits::is_specialized);
  58 #if defined(BOOST_MSVC) && (BOOST_MSVC <= 1200)
  59   // MSVC++ 6.0 issues a LNK1179 error (duplicate comdat) when the compiler
  60   // generates different symbol names with a very long common prefix:
  61   // the dummy "&& true" disambiguates between the symbols generated by this
  62   // BOOST_TEST instantiation and the preceding one.
  63   BOOST_TEST(traits::is_integer && true);
  64 #else
  65   BOOST_TEST(traits::is_integer);
  66 #endif
  67   BOOST_TEST(traits::is_integral == true);
  68   BOOST_TEST(traits::const_min == (traits::min)());
  69   BOOST_TEST(traits::const_max == (traits::max)());
  70 }
  71
  72 int main(int, char*[])
  73 {
  74   runtest("bool", bool());
  75   runtest("char", char());
  76   typedef signed char signed_char;
  77   runtest("signed char", signed_char());
  78   typedef unsigned char unsigned_char;
  79   runtest("unsigned char", unsigned_char());
  80   runtest("wchar_t", wchar_t());
  81   runtest("short", short());
  82   typedef unsigned short unsigned_short;
  83   runtest("unsigned short", unsigned_short());
  84   runtest("int", int());
  85   typedef unsigned int unsigned_int;
  86   runtest("unsigned int", unsigned_int());
  87   runtest("long", long());
  88   typedef unsigned long unsigned_long;
  89   runtest("unsigned long", unsigned_long());
  90 #ifndef BOOST_NO_INTEGRAL_INT64_T
  91   //
  92   // MS/Borland compilers can't support 64-bit member constants
  93   // BeOS doesn't have specialisations for long long in SGI's <limits> header.
  94   runtest("int64_t (possibly long long)", boost::int64_t());
  95   runtest("uint64_t (possibly unsigned long long)", boost::uint64_t());
  96 #else
  97   std::cout << "Skipped int64_t and uint64_t" << std::endl;
  98 #endif
  99   // Some compilers don't pay attention to std:3.6.1/5 and issue a
 100   // warning here if "return 0;" is omitted.
 101   return boost::report_errors();
 102 }
 103