use numid::numid; // rustc v1.26+ numid!(struct Id128(u128) -> 1u128 << 100); #[test] fn tests_u128() { let id = Id128::new(); assert_eq!(id.value(), (1u128 << 100) + 1); assert!(Id128::replace_current_value(1u128 << 110)); assert_eq!(Id128::replace_current_value(1u128 << 108), false); let _ = Id128::create_lower(1u128 << 80); } #[test] fn tests_const_create_lower_u128() { const _C0: Id128 = Id128::const_create_lower(0u128); const _C1: Id128 = Id128::const_create_lower(1u128 << 64 + 1); const _C2: Id128 = Id128::const_create_lower(1u128 << 100); }