rhai 0.13.0

Embedded scripting for Rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

// This script uses the Sieve of Eratosthenes to calculate prime numbers.

let now = timestamp();

const MAX_NUMBER_TO_CHECK = 100_000;     // 9592 primes <= 100000

let prime_mask = [];
prime_mask.pad(MAX_NUMBER_TO_CHECK, true);

prime_mask[0] = false;
prime_mask[1] = false;

let total_primes_found = 0;

for p in range(2, MAX_NUMBER_TO_CHECK) {
    if prime_mask[p] {
        print(p);

        total_primes_found += 1;
        let i = 2 * p;

        while i < MAX_NUMBER_TO_CHECK {
            prime_mask[i] = false;
            i += p;
        }
    }
}

print("Total " + total_primes_found + " primes.");
print("Run time = " + now.elapsed() + " seconds.");