{

cout << "Example error handling using Student's t function. " << endl;

cout << "BOOST_MATH_DOMAIN_ERROR_POLICY is set to: "

<< BOOST_MATH_STRINGIZE(BOOST_MATH_DOMAIN_ERROR_POLICY) << endl;

double degrees_of_freedom = -1; // A bad argument!

double t = 10;

try

{

errno = 0; // Clear/reset.

students_t dist(degrees_of_freedom); // exception is thrown here if enabled.

double p = cdf(dist, t);

// Test for error reported by other means:

if((boost::math::isnan)(p))

{

cout << "cdf returned a NaN!" << endl;

if (errno != 0)

{ // So errno has been set.

cout << "errno is set to: " << errno << endl;

}

}

else

cout << "Probability of Student's t is " << p << endl;

}

catch(const std::exception& e)

{

std::cout <<

"\n""Message from thrown exception was:\n " << e.what() << std::endl;

}

return 0;