Function not_equal

exprtk_test.cpp:1144–1148

template <typename T>
inline bool not_equal(const T& t0, const T& t1,
                      const T& epsilon = T(0.0000000001))
{
   return not_equal_impl(t0,t1,epsilon);
}

inline bool not_equal(const float& t0, const float& t1, const float& epsilon = 0.000001f)
{