Function max_value

lib/platform.h:55–60

    }

    static long long max_value(std::uint8_t bit) {
        assert(bit > 0);
        if (bit >= 64)
            return (~0ULL) >> 1;
        return (1LL << (bit-1)) - 1LL;
    }

    static unsigned long long max_value_unsigned(std::uint8_t bit) {
        assert(bit > 0);