Function memset 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn memset(
    s: *mut c_void,
    c: c_int,
    n: size_t,
) -> *mut c_void

See https://pubs.opengroup.org/onlinepubs/9799919799/functions/memset.html.

Copies c (converted to an unsigned char) into each of the first n bytes of the object pointed to by s.

Returns s.

Implementation

Casting of c may result in truncation.