Method randrange

src/random.h:104–112

Generate a random integer in the range [0..range). */

    /** Generate a random integer in the range [0..range). */
    uint64_t randrange(uint64_t range)
    {
        --range;
        int bits = CountBits(range);
        while (true) {
            uint64_t ret = randbits(bits);
            if (ret <= range) return ret;
        }
    }

    /** Generate random bytes. */
    std::vector<unsigned char> randbytes(size_t len);