libgo/go/math/example_test.go

   1 // Copyright 2017 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package math_test
   6
   7 import (
   8         "fmt"
   9         "math"
  10 )
  11
  12 func ExampleSqrt() {
  13         const (
  14                 a = 3
  15                 b = 4
  16         )
  17         c := math.Sqrt(a*a + b*b)
  18         fmt.Printf("%.1f", c)
  19         // Output: 5.0
  20 }