in:            hex("c1f97c00"), // 1(Infinity)
				want:          "0001-01-01T00:00:00Z",
				fixme:         "decoding cbor data tagged with 1 produces time.Time instead of RFC3339 timestamp string",
				assertOnError: assertNilError,
			},
			{
				name:          "tag 1 with a negative infinity",
				in:            hex("c1f9fc00"), // 1(-Infinity)
				want:          "0001-01-01T00:00:00Z",

			decoded: int64(-1000),
		},
		{
			example: hex("f90000"),
			decoded: 0.0,
		},
		{
			example: hex("f98000"),
			decoded: math.Copysign(0, -1),
		},
		{
			example: hex("f93c00"),
			decoded: 1.0,
		},
		{
			example: hex("fb3ff199999999999a"),
			decoded: 1.1,
		},
		{
			example: hex("f93e00"),
			decoded: 1.5,
		},
		{
			example: hex("f97bff"),