Function pi_device

examples/benchmarks/pi.cpp:30–33

Self-contained code to run host and device estimates of PI. Note that each is generating its own random values, so the estimates of PI will differ. */

   each is generating its own random values, so the estimates of PI
   will differ. */
static double pi_device() {
    array x = randu(samples, f32), y = randu(samples, f32);
    return 4.0 * sum<float>(sqrt(x * x + y * y) < 1) / samples;
}

static double pi_host() {
    int count = 0;