/* Code for exercise 8.10. |  | "C++ Solutions--Companion to The C++ Programming Language, Third Edition" | by David Vandevoorde; Addison-Wesley 1998; ISBN 0-201-30965-3. | | Permission to use, copy, modify, distribute and sell this software | and its documentation for any purpose is hereby granted without fee. | The author makes no representations about the suitability of this | software for any purpose.  It is provided "as is" without express or | implied warranty. `----------------------------------------------------------------------*/#include <limits>#include <stdexcept>#include <string>#include <typeinfo>#include <iostream>/* If your standard librari is not in namespace std, the following   names may clash with your library. To solve the problem you can   add the following macros.#define plus lplus#define minus lminus#define multiply lmultiply#define divide ldivide*/string const op_error("arithmetic error");double plus(double a, double b) {   if ((b>0.0 && a>std::numeric_limits<double>::max()-b)    || (b<0.0 && a<std::numeric_limits<double>::min()-b))      throw std::overflow_error(op_error);   else      return a+b;}inline double minus(double a, double b) {   return plus(a, -b);}double multiply(double a, double b) {   if (std::fabs(b)>1.0    && std::fabs(a)>std::numeric_limits<double>::max()                    /std::fabs(b))      throw std::overflow_error(op_error);   double r = a*b;   if (a!=0.0 && b!=0.0 && r==0.0)      throw std::underflow_error(op_error);   return r;}double divide(double a, double b) {   if (std::fabs(b)<1.0    && std::fabs(a)>std::numeric_limits<double>::max()                   *std::fabs(b))      throw std::overflow_error(op_error);   double r = a/b;   if (a!=0.0 && r==0.0)      throw std::underflow_error(op_error);   return r;}int main() {   double big = std::numeric_limits<double>::max();   try {      std::cout << "big+big = ... ";      std::cout << plus(big, big) << '\n';   } catch (std::exception &x) {      std::cout << "caught " << typeid(x).name()                << " (" << x.what() << ").\n";   }   try {      std::cout << "(-big)-big = ... ";      std::cout << minus(-big, big) << '\n';   } catch (std::exception &x) {      std::cout << "caught " << typeid(x).name()                << " (" << x.what() << ").\n";   }   try {      std::cout << "big*big = ... ";      std::cout << multiply(big, big) << '\n';   } catch (std::exception &x) {      std::cout << "caught " << typeid(x).name()                << " (" << x.what() << ").\n";   }   try {      std::cout << "1e-320/big = ... ";      std::cout << divide(1e-320, big) << '\n';   } catch (std::exception &x) {      std::cout << "caught " << typeid(x).name()                << " (" << x.what() << ").\n";   }}