1 // run 2 3 // Copyright 2010 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 // Test composition, decomposition, and reflection on complex numbers. 8 9 package main 10 11 import "unsafe" 12 import "reflect" 13 14 const ( 15 R = 5 16 I = 6i 17 18 C1 = R + I // ADD(5,6) 19 ) 20 21 func main() { 22 c0 := C1 23 c0 = (c0 + c0 + c0) / (c0 + c0 + 3i) 24 r, i := real(c0), imag(c0) 25 d := r - 1.292308 26 if d < 0 { 27 d = - d 28 } 29 if d > 1e-6 { 30 println(r, "!= 1.292308") 31 panic(0) 32 } 33 d = i + 0.1384615 34 if d < 0 { 35 d = - d 36 } 37 if d > 1e-6 { 38 println(i, "!= -0.1384615") 39 panic(0) 40 } 41 42 c := *(*complex128)(unsafe.Pointer(&c0)) 43 if c != c0 { 44 println(c, "!=", c) 45 panic(0) 46 } 47 48 var a interface{} 49 switch c := reflect.ValueOf(a); c.Kind() { 50 case reflect.Complex64, reflect.Complex128: 51 v := c.Complex() 52 _, _ = complex128(v), true 53 } 54 } 55
