// Generate random bits and send them to STDOUT.

// Suitable for testing with PractRand, c.f. http://pracrand.sourceforge.net/

// and http://www.pcg-random.org/posts/how-to-test-with-practrand.html

// Commandline arguments: backend, device, rng_type

// Example:

// random_practrand 0 0 200 | RNG_test stdin32

#include <arrayfire.h>

#include <cstdint>

#include <cstdio>

int main(int argc, char **argv) {

int backend = argc > 1 ? atoi(argv[1]) : 0;

setBackend(static_cast<Backend>(backend));

int device = argc > 2 ? atoi(argv[2]) : 0;

setDevice(device);

int rng = argc > 3 ? atoi(argv[3]) : 100;

setDefaultRandomEngineType(static_cast<randomEngineType>(rng));

setSeed(0xfe47fe0cc078ec30ULL);

int samples = 1024 * 1024;

while (1) {

array values = randu(samples, u32);

uint32_t *pvalues = values.host<uint32_t>();

fwrite((void *)pvalues, samples * sizeof(*pvalues), 1, stdout);

freeHost(pvalues);

}

}