Chapter 4.  Support

Table of Contents

Fundamental Types
Numeric Properties
Dynamic Memory
Termination Handlers
Verbose Terminate Handler

This part deals with the functions called and objects created automatically during the course of a program's existence.

While we can't reproduce the contents of the Standard here (you need to get your own copy from your nation's member body; see our homepage for help), we can mention a couple of changes in what kind of support a C++ program gets from the Standard Library.

The header limits defines traits classes to give access to various implementation defined-aspects of the fundamental types. The traits classes -- fourteen in total -- are all specializations of the template class numeric_limits, documented here and defined as follows:

   template<typename T>
     struct class
       static const bool is_specialized;
       static T max() throw();
       static T min() throw();

       static const int digits;
       static const int digits10;
       static const bool is_signed;
       static const bool is_integer;
       static const bool is_exact;
       static const int radix;
       static T epsilon() throw();
       static T round_error() throw();

       static const int min_exponent;
       static const int min_exponent10;
       static const int max_exponent;
       static const int max_exponent10;

       static const bool has_infinity;
       static const bool has_quiet_NaN;
       static const bool has_signaling_NaN;
       static const float_denorm_style has_denorm;
       static const bool has_denorm_loss;
       static T infinity() throw();
       static T quiet_NaN() throw();
       static T denorm_min() throw();

       static const bool is_iec559;
       static const bool is_bounded;
       static const bool is_modulo;

       static const bool traps;
       static const bool tinyness_before;
       static const float_round_style round_style;