From 0f2b8ac3a02b6a364519134d1881fe1854d56c09 Mon Sep 17 00:00:00 2001
From: q191201771 <191201771@qq.com>
Date: Mon, 4 May 2020 11:29:03 +0800
Subject: [PATCH] test math/bits

---
 playground/p13/p13.go | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 playground/p13/p13.go

diff --git a/playground/p13/p13.go b/playground/p13/p13.go
new file mode 100644
index 0000000..1d10b7e
--- /dev/null
+++ b/playground/p13/p13.go
@@ -0,0 +1,35 @@
+// Copyright 2020, Chef.  All rights reserved.
+// https://github.com/q191201771/naza
+//
+// Use of this source code is governed by a MIT-style license
+// that can be found in the License file.
+//
+// Author: Chef (191201771@qq.com)
+
+package main
+
+import (
+	"fmt"
+	"math/bits"
+)
+
+func main() {
+	var a uint32
+	a = 1
+	fmt.Printf("%032b\n", a)
+	fmt.Printf("%032b\n", bits.ReverseBytes32(a))
+	a = a << 8
+	fmt.Printf("%032b\n", a)
+	fmt.Printf("%032b\n", bits.ReverseBytes32(a))
+
+	var b uint64
+	b = 1
+	fmt.Printf("%064b\n", b)
+	fmt.Printf("%064b\n", bits.ReverseBytes64(b))
+	b = b << 8
+	fmt.Printf("%064b\n", b)
+	fmt.Printf("%064b\n", bits.ReverseBytes64(b))
+	b = b << 8
+	fmt.Printf("%064b\n", b)
+	fmt.Printf("%064b\n", bits.ReverseBytes64(b))
+}