Function pthread_attr_getinheritsched 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pthread_attr_getinheritsched(
    attr: *const pthread_attr_t,
    inheritsched: *mut c_int,
) -> c_int

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