Antriksh Pany schrieb: > 2. tv_usec has a decimal value range of 0-999999 (10^6 usec make 1 > sec). Which means that tv_usec fits completely in 20 bits (or less). > (tv_usec << 16) yields a number that fits completely in 36 bits (or > less). Max value of this number is 999999 * 2^16, or for convenience, > about M = 10^6 * 2^16. This number (in the range of 0 to M) goes on to > be divided by D=62^6. Also, M > D. Thus, there is about a D / M * 100 > ~ 87 % probability of the division M / D working out to be zero. i.e, > in 87% cases, the last division (v/= num_letters) will cause 'v' to > become 0. But this value (after the 6th division, mind you) is not used. v is used the last time after the 5th division; at this time it still carries enough randomness: 62^5 < 2^32. -- Hannes -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html