454         let n = set.__nfds;  localVariable
455         return set.__fds[..n].iter().any(|p| *p == fd);
460         let n = set.__nfds;  localVariable
461         if !set.__fds[..n].iter().any(|p| *p == fd) {
462             set.__nfds = n + 1;
463             set.__fds[n] = fd;
578     pub fn fgets(buf: *mut c_char, n: c_int, stream: *mut FILE) -> *mut c_char;  in fgets()
591     pub fn strncpy(dst: *mut c_char, src: *const c_char, n: size_t) -> *mut c_char;  in strncpy()
593     pub fn strncat(s: *mut c_char, ct: *const c_char, n: size_t) -> *mut c_char;  in strncat()
595     pub fn strncmp(cs: *const c_char, ct: *const c_char, n: size_t) -> c_int;  in strncmp()
602     pub fn strndup(cs: *const c_char, n: size_t) -> *mut c_char;  in strndup()
606     pub fn strncasecmp(s1: *const c_char, s2: *const c_char, n: size_t) -> c_int;  in strncasecmp()
609     pub fn strerror(n: c_int) -> *mut c_char;  in strerror()
611     pub fn strxfrm(s: *mut c_char, ct: *const c_char, n: size_t) -> size_t;  in strxfrm()
613     pub fn memchr(cx: *const c_void, c: c_int, n: size_t) -> *mut c_void;  in memchr()
614     pub fn memcmp(cx: *const c_void, ct: *const c_void, n: size_t) -> c_int;  in memcmp()
615     pub fn memcpy(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;  in memcpy()
616     pub fn memmove(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;  in memmove()
617     pub fn memset(dest: *mut c_void, c: c_int, n: size_t) -> *mut c_void;  in memset()
621     pub fn snprintf(s: *mut c_char, n: size_t, format: *const c_char, ...) -> c_int;  in snprintf()
723     pub fn getline(lineptr: *mut *mut c_char, n: *mut size_t, stream: *mut FILE) -> ssize_t;  in getline()
739     pub fn memrchr(cx: *const c_void, c: c_int, n: size_t) -> *mut c_void;  in memrchr()