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Source file src/runtime/rand_test.go

Documentation: runtime

  // Copyright 2017 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 runtime_test
  
  import (
  	. "runtime"
  	"strconv"
  	"testing"
  )
  
  func BenchmarkFastrand(b *testing.B) {
  	b.RunParallel(func(pb *testing.PB) {
  		for pb.Next() {
  			Fastrand()
  		}
  	})
  }
  
  func BenchmarkFastrandHashiter(b *testing.B) {
  	var m = make(map[int]int, 10)
  	for i := 0; i < 10; i++ {
  		m[i] = i
  	}
  	b.RunParallel(func(pb *testing.PB) {
  		for pb.Next() {
  			for _ = range m {
  				break
  			}
  		}
  	})
  }
  
  var sink32 uint32
  
  func BenchmarkFastrandn(b *testing.B) {
  	for n := uint32(2); n <= 5; n++ {
  		b.Run(strconv.Itoa(int(n)), func(b *testing.B) {
  			for i := 0; i < b.N; i++ {
  				sink32 = Fastrandn(n)
  			}
  		})
  	}
  }
  

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