ceph/src/boost/libs/numeric/conversion/test/bounds_test.cpp

   1 //  (c) Copyright Fernando Luis Cacciola Carballal 2000-2004
   2 //  Use, modification, and distribution is subject to the Boost Software
   3 //  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   4 //  http://www.boost.org/LICENSE_1_0.txt)
   5
   6 //  See library home page at http://www.boost.org/libs/numeric/conversion
   7 //
   8 // Contact the author at: fernando_cacciola@hotmail.com
   9 //
  10 #include<typeinfo>
  11 #include<iostream>
  12 #include<iomanip>
  13
  14 #include "boost/numeric/conversion/bounds.hpp"
  15
  16 #ifdef __BORLANDC__
  17 #pragma hdrstop
  18 #endif
  19
  20 #include "test_helpers.cpp"
  21
  22 using namespace std ;
  23 using namespace boost ;
  24 using namespace numeric ;
  25
  26 // Test the fields of boost::numeric::bounds<> against the expected values.
  27 //
  28 template<class T>
  29 void test_bounds( T expected_lowest, T expected_highest, T expected_smallest )
  30 {
  31   T lowest   = bounds<T>::lowest  () ;
  32   T highest  = bounds<T>::highest () ;
  33   T smallest = bounds<T>::smallest() ;
  34
  35   BOOST_CHECK_MESSAGE ( lowest == expected_lowest,
  36                         "bounds<" << typeid(T).name() << ">::lowest() = " << printable(lowest) << ". Expected " << printable(expected_lowest)
  37                       ) ;
  38
  39   BOOST_CHECK_MESSAGE ( highest == expected_highest,
  40                         "bounds<" << typeid(T).name() << ">::highest() = " << printable(highest) << ". Expected " << printable(expected_highest)
  41                       ) ;
  42
  43   BOOST_CHECK_MESSAGE ( smallest == expected_smallest,
  44                         "bounds<" << typeid(T).name() << ">::smallest() = " << printable(smallest) << ". Expected " << printable(expected_smallest)
  45                       ) ;
  46 }
  47
  48
  49 template<class T>
  50 void test_bounds_integer( MATCH_FNTPL_ARG(T) )
  51 {
  52   test_bounds(  numeric_limits<T>::min BOOST_PREVENT_MACRO_SUBSTITUTION()
  53               , numeric_limits<T>::max BOOST_PREVENT_MACRO_SUBSTITUTION()
  54               , static_cast<T>(1)
  55              ) ;
  56 }
  57 template<class T>
  58 void test_bounds_float( MATCH_FNTPL_ARG(T))
  59 {
  60   test_bounds(  -numeric_limits<T>::max BOOST_PREVENT_MACRO_SUBSTITUTION ()
  61                , numeric_limits<T>::max BOOST_PREVENT_MACRO_SUBSTITUTION ()
  62                , numeric_limits<T>::min BOOST_PREVENT_MACRO_SUBSTITUTION ()
  63              ) ;
  64 }
  65
  66 void test_bounds_integers()
  67 {
  68   test_bounds_integer( SET_FNTPL_ARG(unsigned char) ) ;
  69   test_bounds_integer( SET_FNTPL_ARG(signed char) ) ;
  70   test_bounds_integer( SET_FNTPL_ARG(char) ) ;
  71   test_bounds_integer( SET_FNTPL_ARG(unsigned short) ) ;
  72   test_bounds_integer( SET_FNTPL_ARG(short) ) ;
  73   test_bounds_integer( SET_FNTPL_ARG(unsigned int) ) ;
  74   test_bounds_integer( SET_FNTPL_ARG(int) ) ;
  75   test_bounds_integer( SET_FNTPL_ARG(unsigned long) ) ;
  76   test_bounds_integer( SET_FNTPL_ARG(long) ) ;
  77 }
  78
  79 void test_bounds_floats()
  80 {
  81   test_bounds_float( SET_FNTPL_ARG(float) );
  82   test_bounds_float( SET_FNTPL_ARG(double) );
  83   test_bounds_float( SET_FNTPL_ARG(long double) );
  84 }
  85
  86 void test_bounds()
  87 {
  88   test_bounds_integers() ;
  89   test_bounds_floats  () ;
  90 }
  91
  92
  93 int test_main( int, char * [] )
  94 {
  95   cout << setprecision( std::numeric_limits<long double>::digits10 ) ;
  96
  97   test_bounds();
  98
  99   return 0;
 100 }
 101