{"complex128 a", append([]complex128{}), []complex128{}},
	{"complex128 b", append([]complex128{}, 0), []complex128{0}},
	{"complex128 c", append([]complex128{}, 0, 1, 2, 3), []complex128{0, 1, 2, 3}},

	{"complex128 d", append([]complex128{0, 1, 2}), []complex128{0, 1, 2}},
	{"complex128 e", append([]complex128{0, 1, 2}, 3), []complex128{0, 1, 2, 3}},

package main

var a [12]complex128
var s []complex128
var c chan complex128
var f struct {
	c complex128
}
var m map[complex128]complex128

func main() {
	// array of complex128
	for i := 0; i < len(a); i++ {
		a[i] = complex(float64(i), float64(-i))
	}
	if a[5] != 5-5i {
		panic(a[5])
	}

	// slice of complex128
	s = make([]complex128, len(a))
	for i := 0; i < len(s); i++ {

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package a

const N = 2+3i

func Func() []complex128 {
	return []complex128{1, complex(2, 3), complex(4, 5)}
}

func Mul(z complex128) complex128 {
	return z * (3 + 4i)

// Does not compile.

package main

type (
	Float32    float32
	Float64    float64
	Complex64  complex64
	Complex128 complex128
)

var (
	f32 float32
	f64 float64
	F32 Float32
	F64 Float64

	c64  complex64
	c128 complex128
	C64  Complex64
	C128 Complex128
)

func F1() int {
	return 1
}

func F3() (int, int, int) {
	return 1, 2, 3
}

func main() {
	// ok

)

const (
	_ complex128 = - /* ERROR "overflow" */ (maxFloat64 + delta64)
	_ complex128 = -maxFloat64
	_ complex128 = maxFloat64
	_ complex128 = maxFloat64 /* ERROR "overflow" */ + delta64

	_ = complex128(- /* ERROR "cannot convert" */ (maxFloat64 + delta64))
	_ = complex128(-maxFloat64)
	_ = complex128(maxFloat64)
	_ = complex128(maxFloat64 /* ERROR "cannot convert" */ + delta64)
)

// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package p

func f(b bool, c complex128) func(complex128) complex128 {
	return func(p complex128) complex128 {
		b = (p+1i == 0) && b
		return (p + 2i) * (p + 3i - c)
	}

		complex(inf, nan)},
	{NaN(),
		NaN()},
}
var vcPolarSC = []complex128{
	NaN(),
}
var polarSC = []ff{
	{math.NaN(), math.NaN()},
}
var vcPowSC = [][2]complex128{
	{NaN(), NaN()},
	{0, NaN()},
}
var powSC = []complex128{
	NaN(),
	NaN(),
}
var sinSC = []struct {
	in,
	want complex128
}{
	// Derived from Sin(z) = -i * Sinh(i * z), G.6 #7
	{complex(zero, zero),

		t.Errorf("real(r52-1) = %g, want %g", got, f52want)
	}
	if got := real(complex128(r52) - 1); got != f52want {
		t.Errorf("real(complex128(r52)-1) = %g, want %g", got, f52want)
	}
	if got := real(r53 - 1); got != f53want {
		t.Errorf("real(r53-1) = %g, want %g", got, f53want)
	}
	if got := real(complex128(r53) - 1); got != 0 {
		t.Errorf("real(complex128(r53)-1) = %g, want 0", got)
	}

	const i52 = complex(0, 1+1.0/(1<<52))

// license that can be found in the LICENSE file.

// Issue 2582
package main

type T struct{}

//go:noinline
func (T) cplx() complex128 {
	return complex(1, 0)
}

func (T) cplx2() complex128 {
	return complex(0, 1)
}

type I interface {
	cplx() complex128
}

func main() {

	var t T

	if v := real(t.cplx()); v != 1 {
		panic("not-inlined complex call failed")
	}

//    DEC       -10,+10      8400       5.3e-17     1.3e-17
//    IEEE      -10,+10     30000       3.8e-16     1.0e-16
// Also tested by csin(casin(z)) = z.

// Sin returns the sine of x.
func Sin(x complex128) complex128 {
	switch re, im := real(x), imag(x); {
	case im == 0 && (math.IsInf(re, 0) || math.IsNaN(re)):
		return complex(math.NaN(), im)
	case math.IsInf(im, 0):
		switch {
		case re == 0:
			return x