same_value.hpp

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#ifndef CRYPTO3_ALGEBRA_DETAIL_SAME_VALUE_HPP
#define CRYPTO3_ALGEBRA_DETAIL_SAME_VALUE_HPP
 
namespace nil {
    namespace crypto3 {
        namespace algebra {
            namespace detail {
 
                template<typename T, T... v>
                struct all_same_value { };
 
                template<typename T, T v1, T v2, T... rest>
                struct all_same_value<T, v1, v2, rest...> : all_same_value<T, v2, rest...> {
                    static_assert(v1 == v2, "All values in the template parameter list must be equal");
                    static constexpr T value = v1;
                };
 
                template<typename T, T v>
                struct all_same_value<T, v> {
                    static constexpr T value = v;
                };
 
            }    // namespace detail
        }        // namespace algebra
    }            // namespace crypto3
}    // namespace nil
 
#endif    // CRYPTO3_ALGEBRA_DETAIL_SAME_VALUE_HPP