diff options
Diffstat (limited to 'src/common/include/gudhi')
-rw-r--r-- | src/common/include/gudhi/distance_functions.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/common/include/gudhi/distance_functions.h b/src/common/include/gudhi/distance_functions.h index f6e2ab5a..c556155e 100644 --- a/src/common/include/gudhi/distance_functions.h +++ b/src/common/include/gudhi/distance_functions.h @@ -26,6 +26,7 @@ #include <cmath> // for std::sqrt #include <type_traits> // for std::decay #include <iterator> // for std::begin, std::end +#include <utility> namespace Gudhi { @@ -48,6 +49,10 @@ class Euclidean_distance { } return std::sqrt(dist); } + template< typename T > + T operator() (const std::pair< T, T >& f, const std::pair< T, T >& s) { + return sqrt((f.first-s.first)*(f.first-s.first) + (f.second-s.second)*(f.second-s.second)); + } }; } // namespace Gudhi |