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 BOOST_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_TEST_EQ(lowest, expected_lowest);
  36
  37   BOOST_TEST_EQ(highest, expected_highest);
  38
  39   BOOST_TEST_EQ(smallest, expected_smallest);
  40 }
  41
  42
  43 template<class T>
  44 void test_bounds_integer( MATCH_FNTPL_ARG(T) )
  45 {
  46   test_bounds(  numeric_limits<T>::min BOOST_PREVENT_MACRO_SUBSTITUTION()
  47               , numeric_limits<T>::max BOOST_PREVENT_MACRO_SUBSTITUTION()
  48               , static_cast<T>(1)
  49              ) ;
  50 }
  51 template<class T>
  52 void test_bounds_float( MATCH_FNTPL_ARG(T))
  53 {
  54   test_bounds(  -numeric_limits<T>::max BOOST_PREVENT_MACRO_SUBSTITUTION ()
  55                , numeric_limits<T>::max BOOST_PREVENT_MACRO_SUBSTITUTION ()
  56                , numeric_limits<T>::min BOOST_PREVENT_MACRO_SUBSTITUTION ()
  57              ) ;
  58 }
  59
  60 void test_bounds_integers()
  61 {
  62   test_bounds_integer( SET_FNTPL_ARG(unsigned char) ) ;
  63   test_bounds_integer( SET_FNTPL_ARG(signed char) ) ;
  64   test_bounds_integer( SET_FNTPL_ARG(char) ) ;
  65   test_bounds_integer( SET_FNTPL_ARG(unsigned short) ) ;
  66   test_bounds_integer( SET_FNTPL_ARG(short) ) ;
  67   test_bounds_integer( SET_FNTPL_ARG(unsigned int) ) ;
  68   test_bounds_integer( SET_FNTPL_ARG(int) ) ;
  69   test_bounds_integer( SET_FNTPL_ARG(unsigned long) ) ;
  70   test_bounds_integer( SET_FNTPL_ARG(long) ) ;
  71 }
  72
  73 void test_bounds_floats()
  74 {
  75   test_bounds_float( SET_FNTPL_ARG(float) );
  76   test_bounds_float( SET_FNTPL_ARG(double) );
  77   test_bounds_float( SET_FNTPL_ARG(long double) );
  78 }
  79
  80 void test_bounds()
  81 {
  82   test_bounds_integers() ;
  83   test_bounds_floats  () ;
  84 }
  85
  86
  87 int main( )
  88 {
  89   cout << setprecision( std::numeric_limits<long double>::digits10 ) ;
  90
  91   test_bounds();
  92
  93   return boost::report_errors();
  94 }
  95