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-rw-r--r--test/ken/cplx3.go54
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diff --git a/test/ken/cplx3.go b/test/ken/cplx3.go
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+// run
+
+// Copyright 2010 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.
+
+// Test composition, decomposition, and reflection on complex numbers.
+
+package main
+
+import "unsafe"
+import "reflect"
+
+const (
+ R = 5
+ I = 6i
+
+ C1 = R + I // ADD(5,6)
+)
+
+func main() {
+ c0 := C1
+ c0 = (c0 + c0 + c0) / (c0 + c0 + 3i)
+ r, i := real(c0), imag(c0)
+ d := r - 1.292308
+ if d < 0 {
+ d = - d
+ }
+ if d > 1e-6 {
+ println(r, "!= 1.292308")
+ panic(0)
+ }
+ d = i + 0.1384615
+ if d < 0 {
+ d = - d
+ }
+ if d > 1e-6 {
+ println(i, "!= -0.1384615")
+ panic(0)
+ }
+
+ c := *(*complex128)(unsafe.Pointer(&c0))
+ if c != c0 {
+ println(c, "!=", c)
+ panic(0)
+ }
+
+ var a interface{}
+ switch c := reflect.ValueOf(a); c.Kind() {
+ case reflect.Complex64, reflect.Complex128:
+ v := c.Complex()
+ _, _ = complex128(v), true
+ }
+}