1pub(crate) fn memchr(n1: u8, haystack: &[u8]) -> Option<usize> {
2 haystack.iter().position(|&b| b == n1)
3}
4
5pub(crate) fn memchr2(n1: u8, n2: u8, haystack: &[u8]) -> Option<usize> {
6 haystack.iter().position(|&b| b == n1 || b == n2)
7}
8
9pub(crate) fn memchr3(
10 n1: u8,
11 n2: u8,
12 n3: u8,
13 haystack: &[u8],
14) -> Option<usize> {
15 haystack.iter().position(|&b| b == n1 || b == n2 || b == n3)
16}
17
18pub(crate) fn memrchr(n1: u8, haystack: &[u8]) -> Option<usize> {
19 haystack.iter().rposition(|&b| b == n1)
20}
21
22pub(crate) fn memrchr2(n1: u8, n2: u8, haystack: &[u8]) -> Option<usize> {
23 haystack.iter().rposition(|&b| b == n1 || b == n2)
24}
25
26pub(crate) fn memrchr3(
27 n1: u8,
28 n2: u8,
29 n3: u8,
30 haystack: &[u8],
31) -> Option<usize> {
32 haystack.iter().rposition(|&b| b == n1 || b == n2 || b == n3)
33}
34