vstd::atomic

Function wrapping_sub_u64

Source 
pub open spec fn wrapping_sub_u64(a: int, b: int) -> int
Expand description
{
    if a - b < (<u64>::MIN as int) {
        a - b + ((<u64>::MAX as int) - (<u64>::MIN as int) + 1)
    } else {
        a - b
    }
}