44                                                const std::string& group_name = 
"")
 
   46  if (group_name.empty() && expected.
distance(actual) <= epsilon)
 
   48    return ::testing::AssertionSuccess();
 
   52    return ::testing::AssertionSuccess();
 
   54  std::stringstream msg;
 
   55  msg << 
" expected: " << expected << 
" actual: " << actual;
 
   57  return ::testing::AssertionFailure() << msg.str();