/*
 * Software License Agreement (BSD License)
 *
 *  Point Cloud Library (PCL) - www.pointclouds.org
 *  Copyright (c) 2010-2011, Willow Garage, Inc.
 *
 *  All rights reserved.
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 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
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 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * $Id$
 */

#pragma once

#include <cmath>
#include <limits>

namespace pcl
{
  namespace utils
  {
    /** \brief Check if val1 and val2 are equal to an epsilon extent
      * \param[in] val1 first number to check
      * \param[in] val2 second number to check
      * \param[in] eps epsilon
      * \return true if val1 is equal to val2, false otherwise.
      */
    template<typename T> bool
    equal (T val1, T val2, T eps = std::numeric_limits<T>::min ())
    {
      return (std::fabs (val1 - val2) < eps);
    }

   /** \brief Utility function to eliminate unused variable warnings. */
    template<typename ...T> void
    ignore(const T&...)
    {
    }
  } // namespace utils
} // namespace pcl