Point Cloud Library (PCL)  1.14.1-dev
utils.h
1 /*
2  * Software License Agreement (BSD License)
3  *
4  * Point Cloud Library (PCL) - www.pointclouds.org
5  * Copyright (c) 2010-2011, Willow Garage, Inc.
6  *
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * * Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  * * Redistributions in binary form must reproduce the above
16  * copyright notice, this list of conditions and the following
17  * disclaimer in the documentation and/or other materials provided
18  * with the distribution.
19  * * Neither the name of the copyright holder(s) nor the names of its
20  * contributors may be used to endorse or promote products derived
21  * from this software without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
26  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
27  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
28  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
29  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
31  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
33  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34  * POSSIBILITY OF SUCH DAMAGE.
35  *
36  * $Id$
37  */
38 
39 #pragma once
40 
41 #include <cmath>
42 #include <limits>
43 
44 namespace pcl
45 {
46  namespace utils
47  {
48  /** \brief Check if val1 and val2 are equal to an epsilon extent
49  * \param[in] val1 first number to check
50  * \param[in] val2 second number to check
51  * \param[in] eps epsilon
52  * \return true if val1 is equal to val2, false otherwise.
53  */
54  template<typename T> bool
55  equal (T val1, T val2, T eps = std::numeric_limits<T>::min ())
56  {
57  return (std::fabs (val1 - val2) < eps);
58  }
59 
60  /** \brief Utility function to eliminate unused variable warnings. */
61  template<typename ...T> void
62  ignore(const T&...)
63  {
64  }
65  } // namespace utils
66 } // namespace pcl
void ignore(const T &...)
Utility function to eliminate unused variable warnings.
Definition: utils.h:62
bool equal(T val1, T val2, T eps=std::numeric_limits< T >::min())
Check if val1 and val2 are equal to an epsilon extent.
Definition: utils.h:55