malachite-base 0.4.6

A collection of utilities, including new arithmetic traits and iterators that generate all values of a type
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46

use malachite_base::num::basic::unsigneds::PrimitiveUnsigned;
use malachite_base::num::random::variable_range_generator;
use malachite_base::random::EXAMPLE_SEED;
use std::panic::catch_unwind;

fn next_less_than_helper<T: PrimitiveUnsigned>(limit: T, expected_values: &[T]) {
    let mut range_generator = variable_range_generator(EXAMPLE_SEED);
    let mut xs = Vec::with_capacity(20);
    for _ in 0..20 {
        xs.push(range_generator.next_less_than(limit))
    }
    assert_eq!(xs, expected_values);
}

#[test]
fn test_next_less_than() {
    next_less_than_helper::<u8>(1, &[0; 20]);
    next_less_than_helper::<u16>(
        2,
        &[1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0],
    );
    next_less_than_helper::<u32>(
        3,
        &[1, 0, 1, 2, 1, 1, 0, 1, 0, 2, 1, 0, 1, 2, 2, 0, 1, 0, 2, 2],
    );
    next_less_than_helper::<u64>(
        4,
        &[1, 0, 3, 1, 3, 3, 2, 3, 1, 1, 0, 1, 0, 3, 2, 1, 0, 1, 2, 3],
    );
    next_less_than_helper::<u128>(
        10,
        &[1, 7, 5, 4, 6, 4, 2, 8, 1, 7, 5, 0, 2, 6, 3, 5, 2, 2, 9, 5],
    );
}

fn next_less_than_fail_helper<T: PrimitiveUnsigned>() {
    assert_panic!({
        let mut range_generator = variable_range_generator(EXAMPLE_SEED);
        range_generator.next_less_than(T::ZERO);
    });
}

#[test]
fn next_less_than_fail() {
    apply_fn_to_unsigneds!(next_less_than_fail_helper);
}