Concept definition

template<typename T>
concept detray::concepts::scalar = 
    !traits::is_matrix<T> && !traits::is_vector<T> && requires(T a, T b) {
      { a + b } -> std::convertible_to<T>;
      { a - b } -> std::convertible_to<T>;
      { a * b } -> std::convertible_to<T>;
      { a / b } -> std::convertible_to<T>;
    }

Detailed Description

Scalar concept: Elements of vectors/matrices (can be simd vectors).