mongoc_rand_add()
Synopsis
void
mongoc_rand_add(const void *buf,
                int         num,
                double      entropy);Description
Mixes num bytes of data into the mongoc random number generator. Entropy specifies a lower bound estimate of the randomness contained in buf.
Parameters
| buf | A buffer. | 
| num | An int of number of bytes in buf. | 
| entropy | A double of randomness estimate in buf. |