numinquire.cpp

A C++ class library for scientific computing

/*****************************************************************************
 *
 * numinquire.cpp     Blitz++ <numinquire.h> example, illustrating how to
 *                    get at properties of numeric types.
 * $Id: numinquire.cpp,v 1.2 2003/01/13 11:17:06 patricg Exp $
 *****************************************************************************/

#include <blitz/blitz.h>
#include <blitz/numinquire.h>

BZ_USING_NAMESPACE(blitz)

int main()
{
    double z = 1.0;

    cout << "Some inquiries into the nature of double:" << endl
         << "digits(z) = " << digits(z) << endl
         << "epsilon(z) = " << epsilon(z) << endl
         << "huge(z) = " << huge(z) << endl
         << "tiny(z) = " << tiny(z) << endl
         << "max_exponent(z) = " << max_exponent(z) << endl
         << "min_exponent(z) = " << min_exponent(z) << endl
         << "max_exponent10(z) = " << max_exponent10(z) << endl
         << "min_exponent10(z) = " << min_exponent10(z) << endl
         << "precision(z) = " << precision(z) << endl
         << "radix(z) = " << radix(z) << endl;

    Range r = range(z);
    cout << "range(z) = [ " << r.first() << ", " << r.last() << " ]"
         << endl;

    cout << endl << "More obscure properties:" << endl
         << "is_signed(z) = " << is_signed(z) << endl
         << "is_integer(z) = " << is_integer(z) << endl
         << "is_exact(z) = " << is_exact(z) << endl
         << "round_error(z) = " << round_error(z) << endl
         << "has_infinity(z) = " << has_infinity(z) << endl
         << "has_quiet_NaN(z) = " << has_quiet_NaN(z) << endl
         << "has_signaling_NaN(z) = " << has_signaling_NaN(z) << endl
         << "has_denorm(z) = " << has_denorm(z) << endl
         << "has_denorm_loss(z) = " << has_denorm_loss(z) << endl
         << "infinity(z) = " << infinity(z) << endl
         << "quiet_NaN(z) = " << quiet_NaN(z) << endl
         << "signaling_NaN(z) = " << signaling_NaN(z) << endl
         << "denorm_min(z) = " << denorm_min(z) << endl
         << "is_iec559(z) = " << is_iec559(z) << endl
         << "is_bounded(z) = " << is_bounded(z) << endl
         << "is_modulo(z) = " << is_modulo(z) << endl
         << "traps(z) = " << traps(z) << endl
         << "tinyness_before(z) = " << tinyness_before(z) << endl;

    return 0;
}