A small tool to get random numbers from the RDRAND hardware RNG present in Intel CPUs
make
./example
This will run a short program that checks for the presence of the RDRAND instruction in the CPU. If available it will seed a standard library Mersenne-Twister PRNG using 624 32-bit integers taken from the RDRAND hardware RNG.
The program should output something like this:
State size of the Mersenne-Twister: 624
Some random numbers...
3882263927
2203886681
1130077512
3213924060
2486026337
598014046
645822272
2367677818
2388906600
4012953650
For use in other programs -mrdrnd must be added to the compiler flags.
An processor that has the RDRAND instruction. Intel CPUs from Ivy Bridge onwards are compatible.