src/libstd/sys/vxworks/memchr.rs

   1 // Original implementation taken from rust-memchr.
   2 // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch
   3
   4 pub fn memchr(needle: u8, haystack: &[u8]) -> Option<usize> {
   5     let p = unsafe {
   6         libc::memchr(
   7             haystack.as_ptr() as *const libc::c_void,
   8             needle as libc::c_int,
   9             haystack.len(),
  10         )
  11     };
  12     if p.is_null() { None } else { Some(p as usize - (haystack.as_ptr() as usize)) }
  13 }
  14
  15 pub fn memrchr(needle: u8, haystack: &[u8]) -> Option<usize> {
  16     fn memrchr_specific(needle: u8, haystack: &[u8]) -> Option<usize> {
  17         core::slice::memchr::memrchr(needle, haystack)
  18     }
  19
  20     memrchr_specific(needle, haystack)
  21 }