On Thu, Feb 7, 2013 at 10:33 PM, website reader <website.reader3 at gmail.com>wrote: > My system is 64 bit OS. Can I assume that MAX_RAND = 2^64-1 ?? > $> grep -R "define\s*RAND_MAX" /usr/include /usr/include/stdlib.h:#define RAND_MAX 2147483647 Looks like it's hard-coded to 2**32/2-1.