{"%.3g", 0i, "(0+0i)"},
	{"%.3e", 1 + 2i, "(1.000e+00+2.000e+00i)"},
	{"%.3x", 1 + 2i, "(0x1.000p+00+0x1.000p+01i)"},
	{"%.3f", 1 + 2i, "(1.000+2.000i)"},
	{"%.3g", 1 + 2i, "(1+2i)"},
	{"%.3e", -1 - 2i, "(-1.000e+00-2.000e+00i)"},
	{"%.3x", -1 - 2i, "(-0x1.000p+00-0x1.000p+01i)"},
	{"%.3f", -1 - 2i, "(-1.000-2.000i)"},
	{"%.3g", -1 - 2i, "(-1-2i)"},
	{"% .3E", -1 - 2i, "(-1.000E+00-2.000E+00i)"},

		map[float64]string{7: "bar", -3: "foo", math.NaN(): "nan", math.Inf(0): "inf"},
		"NaN:nan -3:foo 7:bar +Inf:inf",
	},
	{
		map[complex128]string{7 + 2i: "bar2", 7 + 1i: "bar", -3: "foo", complex(math.NaN(), 0i): "nan", complex(math.Inf(0), 0i): "inf"},
		"(NaN+0i):nan (-3+0i):foo (7+1i):bar (7+2i):bar2 (+Inf+0i):inf",
	},
	{
		map[bool]string{true: "true", false: "false"},
		"false:false true:true",
	},
	{
		chanMap(),

	{"0X_1P4", true, true, true, false, 16, 16, 16, 0},
	{"0x_1p-4", false, false, true, false, 0, 0, 1 / 16., 0},
	{"4i", false, false, false, true, 0, 0, 0, 4i},
	{"-1.2+4.2i", false, false, false, true, 0, 0, 0, -1.2 + 4.2i},
	{"073i", false, false, false, true, 0, 0, 0, 73i}, // not octal!
	// complex with 0 imaginary are float (and maybe integer)
	{"0i", true, true, true, true, 0, 0, 0, 0},

type cmpTest struct {
	expr  string
	truth string
	ok    bool
}

var cmpTests = []cmpTest{
	{"eq true true", "true", true},
	{"eq true false", "false", true},
	{"eq 1+2i 1+2i", "true", true},
	{"eq 1+2i 1+3i", "false", true},
	{"eq 1.5 1.5", "true", true},
	{"eq 1.5 2.5", "false", true},
	{"eq 1 1", "true", true},
	{"eq 1 2", "false", true},
	{"eq `xy` `xy`", "true", true},

type cmpTest struct {
	expr  string
	truth string
	ok    bool
}

var cmpTests = []cmpTest{
	{"eq true true", "true", true},
	{"eq true false", "false", true},
	{"eq 1+2i 1+2i", "true", true},
	{"eq 1+2i 1+3i", "false", true},
	{"eq 1.5 1.5", "true", true},
	{"eq 1.5 2.5", "false", true},
	{"eq 1 1", "true", true},
	{"eq 1 2", "false", true},
	{"eq `xy` `xy`", "true", true},

		_ = cap([4]int{cap([4]int{})})
	)
	var y float64
	var z complex128
	const (
		_ = cap([4]float64{})
		_ = cap([4]float64{y})
		_ = cap([4]float64{real(2i)})
		_ = cap /* ERROR "not constant" */ ([4]float64{real(z)})
	)
	var ch chan [10]int
	const (
		_ = cap /* ERROR "not constant" */ (<-ch)
		_ = cap /* ERROR "not constant" */ ([4]int{(<-ch)[0]})
	)
}

00000320  58 ce a3 33 be 0f ca 12  54 a2 0e a9 e5 22 8f 82  |X..3....T...."..|
00000330  df 1a 3e 21 bf 66 c6 13  39 77 83 95 b1 4b 1d d3  |..>!.f..9w...K..|
00000340  32 69 24 c2 89 14 03 03  00 11 1c eb 63 31 c9 c9  |2i$.........c1..|
00000350  8a e3 8b 25 7e e9 b7 7d  19 03 3c 16 03 03 00 20  |...%~..}..<.... |
00000360  c6 41 57 04 ab e8 6c 55  0b dc cd 06 f5 b3 4b 95  |.AW...lU......K.|

//     -1 and +1, it will be emitted as if q.Format were DecimalSI.
//   - Otherwise, if q.Format is set to BinarySI, fractional parts of q.Amount will be
//     rounded up. (1.1i becomes 2i.)
func (q *Quantity) CanonicalizeBytes(out []byte) (result, suffix []byte) {
	if q.IsZero() {
		return zeroBytes, nil
	}

	var rounded CanonicalValue
	format := q.Format
	switch format {

constant and <code>s</code> is evaluated.
</p>

<pre>
const (
	c1 = imag(2i)                    // imag(2i) = 2.0 is a constant
	c2 = len([10]float64{2})         // [10]float64{2} contains no function calls
	c3 = len([10]float64{c1})        // [10]float64{c1} contains no function calls
	c4 = len([10]float64{imag(2i)})  // imag(2i) is a constant and no function call is issued

constant and <code>s</code> is evaluated.
</p>

<pre>
const (
	c1 = imag(2i)                    // imag(2i) = 2.0 is a constant
	c2 = len([10]float64{2})         // [10]float64{2} contains no function calls
	c3 = len([10]float64{c1})        // [10]float64{c1} contains no function calls
	c4 = len([10]float64{imag(2i)})  // imag(2i) is a constant and no function call is issued