holos-tda 0.9.0

Vietoris-Rips persistence and checked degree-Rips modules
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

pub(crate) struct Rng(u64);

impl Rng {
    pub(crate) fn new(seed: u64) -> Self {
        Rng(seed | 1)
    }

    pub(crate) fn next_u64(&mut self) -> u64 {
        let mut x = self.0;
        x ^= x << 13;
        x ^= x >> 7;
        x ^= x << 17;
        self.0 = x;
        x
    }

    pub(crate) fn below(&mut self, n: usize) -> usize {
        (self.next_u64() % n as u64) as usize
    }
}