/*M/////////////////////////////////////////////////////////////////////////////////////// // // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. // // By downloading, copying, installing or using the software you agree to this license. // If you do not agree to this license, do not download, install, // copy or use the software. // // // License Agreement // For Open Source Computer Vision Library // // Copyright (C) 2000-2008, Intel Corporation, all rights reserved. // Copyright (C) 2009-2011, Willow Garage Inc., all rights reserved. // Third party copyrights are property of their respective owners. // // * Redistribution's of source code must retain the above copyright notice, // this list of conditions and the following disclaimer. // // * Redistribution's 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. // // * The name of Intel Corporation may not 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 limited to, the implied // warranties of merchantability and fitness for a particular purpose are disclaimed. // In no event shall the Intel Corporation or contributors be liable for any direct, // indirect, incidental, special, exemplary, or consequential damages // (including, but not limited to, procurement of substitute goods or services; // loss of use, data, or profits; or business interruption) however caused // and on any theory of liability, whether in contract, strict liability, // or tort (including negligence or otherwise) arising in any way out of // the use of this software, even if advised of the possibility of such damage. // //M*/ #ifndef __NORM2_HPP__ #define __NORM2_HPP__ template<bool B, class T = void> struct iftype {}; template<class T> struct iftype<true, T> { typedef T type; }; // enable_if template<class T, T v> struct int_const { // integral_constant static const T value = v; typedef T value_type; typedef int_const type; operator value_type() const { return value; } value_type operator()() const { return value; } }; typedef int_const<bool,true> ttype; // true_type typedef int_const<bool,false> ftype; // false_type template <class T, class U> struct same_as : ftype {}; template <class T> struct same_as<T, T> : ttype {}; // is_same template <typename _Tp> struct is_norm2_type : int_const<bool, !same_as<_Tp, char>::value && !same_as<_Tp, uchar>::value && !same_as<_Tp, ushort>::value && !same_as<_Tp, uint>::value>{}; template <typename _Tp, int cn> static inline typename iftype< is_norm2_type<_Tp>::value, _Tp >:: type norm2(cv::Vec<_Tp, cn> a, cv::Vec<_Tp, cn> b) { return (a - b).dot(a - b); } template <typename _Tp> static inline typename iftype< is_norm2_type<_Tp>::value, _Tp >:: type norm2(const _Tp &a, const _Tp &b) { return (a - b)*(a - b); } #endif /* __NORM2_HPP__ */