sink = make([]byte, complex64(1+0i))  // ERROR "non-integer.*len|must be integer"
	sink = make([]byte, complex128(1+0i)) // ERROR "non-integer.*len|must be integer"

	sink = make([]byte, 0, 1+0i)
	sink = make([]byte, 0, complex64(1+0i))  // ERROR "non-integer.*cap|must be integer"
	sink = make([]byte, 0, complex128(1+0i)) // ERROR "non-integer.*cap|must be integer"

// It rounds the result assuming that the original was obtained from a complex
// value of bitSize bits, which must be 64 for complex64 and 128 for complex128.
func FormatComplex(c complex128, fmt byte, prec, bitSize int) string {
	if bitSize != 64 && bitSize != 128 {
		panic("invalid bitSize")
	}
	bitSize >>= 1 // complex64 uses float32 internally

// It would likely be in a constraints package in the standard library.
type Numeric interface {
	~int|~int8|~int16|~int32|~int64|
		~uint|~uint8|~uint16|~uint32|~uint64|~uintptr|
		~float32|~float64|
		~complex64|~complex128
}

func DotProduct[T Numeric](s1, s2 []T) T {
	if len(s1) != len(s2) {
		panic("DotProduct: slices of unequal length")
	}
	var r T
	for i := range s1 {
		r += s1[i] * s2[i]
	}
	return r
}

		{uintptr(93), "(uintptr) 0x5d\n"},
		{ptrint(93), "(*int)(93)\n"},
		{float32(93.76), "(float32) 93.76\n"},
		{float64(93.76), "(float64) 93.76\n"},
		{complex64(93i), "(complex64) (0+93i)\n"},
		{complex128(93i), "(complex128) (0+93i)\n"},
		{bool(true), "(bool) true\n"},
		{bool(false), "(bool) false\n"},
		{string("test"), "(string) (len=4) \"test\"\n"},
		{ptrstr("test"), "(*string)((len=4) \"test\")\n"},

package main

import "fmt"

const (
	R = 5
	I = 6i

	C1 = R + I // ADD(5,6)
)

func want(s, w string) {
	if s != w {
		panic(s + " != " + w)
	}
}

func doprint(c complex128, w string) {
	s := fmt.Sprintf("%f", c)
	want(s, w)
}

func main() {

	// constants
	s := fmt.Sprintf("%f", -C1)
	want(s, "(-5.000000-6.000000i)")
	doprint(C1, "(5.000000+6.000000i)")

package a

type Numeric interface {
	~int | ~int8 | ~int16 | ~int32 | ~int64 |
		~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr |
		~float32 | ~float64 |
		~complex64 | ~complex128
}

// numericAbs matches numeric types with an Abs method.
type numericAbs[T any] interface {
	Numeric
	Abs() T
}

// AbsDifference computes the absolute value of the difference of

	}
	C := complex(Ar, Ai)

	fmt.Println("literal", 25.3+55i)
	fmt.Println("go/constant", c)
	fmt.Println("complex128", C)

	// Output:
	//
	// Could not represent real part 25.3 exactly as float64
	// literal (25.3+55i)
	// go/constant (25.3 + 55i)
	// complex128 (25.299999999999997+55i)
}

func ExampleBinaryOp() {
	// 11 / 0.5
	a := constant.MakeUint64(11)
	b := constant.MakeFloat64(0.5)

			return nil, x
		}
	}
	return err, nil
}

// ParseComplex converts the string s to a complex number
// with the precision specified by bitSize: 64 for complex64, or 128 for complex128.
// When bitSize=64, the result still has type complex128, but it will be
// convertible to complex64 without changing its value.
//
// The number represented by s must be of the form N, Ni, or N±Ni, where N stands

// Copyright 2022 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 a

func F() complex128 {
	return 0+0i

	printf("\tnan     = math.NaN()\n");
	printf("\tinf     = math.Inf(1)\n");
	printf("\tzero    = 0.0\n");
	printf(")\n");
	printf("\n");
	printf("var tests = []struct {\n");
	printf("\tf, g complex128\n");
	printf("\tout  complex128\n");
	printf("}{\n");

	for(i=0; i<nelem(f); i++)
	for(j=0; j<nelem(f); j++)
	for(k=0; k<nelem(f); k++)
	for(l=0; l<nelem(f); l++) {
		n = f[i] + f[j]*I;
		d = f[k] + f[l]*I;
		q = n/d;