test_int64{fn: mod_0_int64, fnname: "mod_0_int64", in: -9223372036854775808, want: 0},
	test_int64{fn: mod_0_int64, fnname: "mod_0_int64", in: -9223372036854775807, want: 0},
	test_int64{fn: mod_0_int64, fnname: "mod_0_int64", in: -4294967296, want: 0},
	test_int64{fn: mod_0_int64, fnname: "mod_0_int64", in: -1, want: 0},
	test_int64{fn: mod_0_int64, fnname: "mod_0_int64", in: 1, want: 0},

//TestArithmeticBoundary tests boundary results for arithmetic operations.
func TestArithmeticBoundary(t *testing.T) {

	for _, v := range uint64_data {
		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 {