boost::gil::binary_operation_obj::operator()

result_type
operator()(error_t const& rhs) const;

template<
    typename V1,
    typename V2>
[[__always_inline__]]
result_type
operator()(std::pair<V1 const*, V2 const*> const& p) const;

template<
    typename V1,
    typename V2>
[[__always_inline__]]
result_type
operator()(
    V1 const& v1,
    V2 const& v2) const;