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-rw-r--r--src/math/cmplx/example_test.go28
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diff --git a/src/math/cmplx/example_test.go b/src/math/cmplx/example_test.go
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+// Copyright 2016 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 cmplx_test
+
+import (
+ "fmt"
+ "math"
+ "math/cmplx"
+)
+
+func ExampleAbs() {
+ fmt.Printf("%.1f", cmplx.Abs(3+4i))
+ // Output: 5.0
+}
+
+// ExampleExp computes Euler's identity.
+func ExampleExp() {
+ fmt.Printf("%.1f", cmplx.Exp(1i*math.Pi)+1)
+ // Output: (0.0+0.0i)
+}
+
+func ExamplePolar() {
+ r, theta := cmplx.Polar(2i)
+ fmt.Printf("r: %.1f, θ: %.1f*π", r, theta/math.Pi)
+ // Output: r: 2.0, θ: 0.5*π
+}