site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com On Nov 14, 2007, at 1:37 PM, Nick Zitzmann wrote: I searched around and didn't see anything relevant... In our 32-bit projects, we're calling: srandom(time(NULL)); int32_t seed=(int32_t)(time(NULL) & 0xff); srandom(seed); (Or something like that- untested code.) Cheers, M _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... What's the best way of doing something like the above in a 64-bit program? srandom() takes a 32-bit integer when compiling for both 32-bit and 64-bit, but time() returns a 64-bit integer when compiling for 64-bit. I guess I have until 2038 to worry about this, but I'd rather deal with it now... srandrom() doesn't really care about the actual time- you should just make sure you seed with the least-significant 32-bits which you can do with: This email sent to site_archiver@lists.apple.com