test_uint64{fn: sub_uint64_1, fnname: "sub_uint64_1", in: 0, want: 18446744073709551615},
	test_uint64{fn: sub_1_uint64, fnname: "sub_1_uint64", in: 1, want: 0},
	test_uint64{fn: sub_uint64_1, fnname: "sub_uint64_1", in: 1, want: 0},
	test_uint64{fn: sub_1_uint64, fnname: "sub_1_uint64", in: 4294967296, want: 18446744069414584321},
	test_uint64{fn: sub_uint64_1, fnname: "sub_uint64_1", in: 4294967296, want: 4294967295},

		if got := add_uint64_ssa(v.a, v.b); got != v.add {
			t.Errorf("add_uint64 %d+%d = %d, wanted %d\n", v.a, v.b, got, v.add)
		}
		if got := sub_uint64_ssa(v.a, v.b); got != v.sub {
			t.Errorf("sub_uint64 %d-%d = %d, wanted %d\n", v.a, v.b, got, v.sub)
		}
		if v.b != 0 {
			if got := div_uint64_ssa(v.a, v.b); got != v.div {
				t.Errorf("div_uint64 %d/%d = %d, wanted %d\n", v.a, v.b, got, v.div)
			}

		}