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use vm_types::{vm_size_t, mach_vm_size_t, mach_vm_offset_t};
extern "C" {
pub static vm_page_size: vm_size_t;
pub static vm_page_mask: vm_size_t;
pub static vm_page_shift: ::libc::c_int;
}
pub unsafe fn mach_vm_trunc_page(x: mach_vm_offset_t) -> mach_vm_offset_t {
(x & !(vm_page_mask as mach_vm_size_t))
}
pub unsafe fn mach_vm_round_page(x: mach_vm_offset_t) -> mach_vm_offset_t {
((x + vm_page_mask as mach_vm_size_t) & !(vm_page_mask as mach_vm_size_t))
}
#[test]
fn page_size_test() {
unsafe {
assert!(vm_page_size > 0);
assert!(vm_page_size % 2 == 0);
assert_eq!(mach_vm_round_page(1), vm_page_size as mach_vm_size_t);
println!("{:?}", vm_page_size);
}
}