Apply .gitignore rules

.svn/pristine/42/428d4b97237af34809acbd8293feabe883b1d689.svn-base

@@ -0,0 +1,37 @@
+package mathUtil
+
+import (
+	"fmt"
+)
+
+// 获取字节大小的描述信息
+// size：字节大小
+// 返回值：
+// 描述信息
+func GetSizeDesc(size int64) string {
+	str := ""
+
+	// 判断输入是否超过int64的范围
+	if size < 0 || size > (1<<63-1) {
+		return str
+	}
+
+	switch {
+	case size >= 1024*1024*1024*1024*1024*1024:
+		str = fmt.Sprintf("%.2fEB", float64(size)/1024/1024/1024/1024/1024/1024)
+	case size >= 1024*1024*1024*1024*1024:
+		str = fmt.Sprintf("%.2fPB", float64(size)/1024/1024/1024/1024/1024)
+	case size >= 1024*1024*1024*1024:
+		str = fmt.Sprintf("%.2fTB", float64(size)/1024/1024/1024/1024)
+	case size >= 1024*1024*1024:
+		str = fmt.Sprintf("%.2fGB", float64(size)/1024/1024/1024)
+	case size >= 1024*1024:
+		str = fmt.Sprintf("%dMB", size/1024/1024)
+	case size >= 1024:
+		str = fmt.Sprintf("%dKB", size/1024)
+	default:
+		str = fmt.Sprintf("%dB", size)
+	}
+
+	return str
+}