eps.h

// Description: Next greater and next smaller floating point values
// Documentation: math_functions.txt

#ifndef PASTELSYS_EPS_H
#define PASTELSYS_EPS_H

#include "pastel/sys/mytypes.h"
#include "pastel/sys/real/real_concept.h"

namespace Pastel
{

    //! Returns the next greater 64-bit floating point value.
    /*!
   returns:
   The smallest floating point value > that, unless
   'that' is -infinity, +infinity, or NaN, in which
   itself.
   */
    real64_ieee nextGreater(real64_ieee that);

    //! Returns the next smaller 64-bit floating point value.
    /*!
   returns:
   The greatest floating point value < that, unless
   'that' is -infinity, +infinity, or NaN, in which
   itself.
   */
    real64_ieee nextSmaller(real64_ieee that);

    //! Returns the next greater 32-bit floating point value.
    /*!
   See the documentation for the 64-bit version.
   */
    real32_ieee nextGreater(real32_ieee that);

    //! Returns the next smaller 32-bit floating point value.
    /*!
   See the documentation for the 64-bit version.
   */
    real32_ieee nextSmaller(real32_ieee that);

}

#include "pastel/sys/math/eps.hpp"

#endif