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pub fn memchr(needle: u8, haystack: &[u8]) -> Option<usize> {
let p = unsafe {
libc::memchr(
haystack.as_ptr() as *const libc::c_void,
needle as libc::c_int,
haystack.len(),
)
};
if p.is_null() { None } else { Some(p as usize - (haystack.as_ptr() as usize)) }
}
pub fn memrchr(needle: u8, haystack: &[u8]) -> Option<usize> {
let p = unsafe {
libc::memrchr(
haystack.as_ptr() as *const libc::c_void,
needle as libc::c_int,
haystack.len(),
)
};
if p.is_null() { None } else { Some(p as usize - (haystack.as_ptr() as usize)) }
}
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