Re: [Boost-users] Random: How to get a different seed?

24 Jan 2011

      AMDG

On 1/24/2011 12:57 PM, Lasse Kliemann wrote:
...
I use /dev/urandom for this, like so (code fragments):
FILE *dev_urandom;
   uint32_t seed;
   if((dev_urandom = fopen("/dev/urandom", "r")) == NULL) throw /* error */
   if(fread(&seed, sizeof(seed), 1, dev_urandom) == 0) throw /* error */
   if(fclose(dev_urandom) != 0) throw /* error */
   boost::mt19937 gen(seed);
But maybe there are even better ways.
boost::random_device seed_gen;
boost::mt19937 gen(seed_gen());

should have the same effect and is more portable.

In Christ,
Steven Watanabe