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How to compare two floating point numbers in Bash?

...xpression between double parenthesis (( )) will translate these values to respectively true or false. Please, ensure that the bc basic calculator package is installed. This equally works for floats in scientific format, provided a capital letter E is employed, e.g. num1=3.44E6 ...
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ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术

...NULL; void * pSock = NULL; //使用tcp协议进行通信,需要连接的目标机器IP地址为192.168.1.2 //通信使用的网络端口 为7766 const char * pAddr = "tcp://192.168.1.2:7766"; //创建context if((pCtx = zmq_ctx_new()) == NULL) { retur...
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Windows下 C++网络延时检测 - C/C++ - 清泛网 - 专注C/C++及内核技术

Windows下 C++网络延时检测一般需要连接服务器后端的软件都有服务器节点网络延迟的检测,帮助选择低延时、负载较低的服务器节点。例如:那么这个功能是如何实现的呢?...一般需要连接服务器后端的软件都有服务器节点网络...
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中关村服务辐射百万创业者 - 资讯 - 清泛网 - 专注C/C++及内核技术

...资本将在资本领域投入5亿元资金,带动50亿元资金汇入,连接各界300亿元资金在创新创业领域流动,为2000个创业项目提供资金支持。 此外,国际化布局成为清青创的重要组成部分。清青创全球版图横贯亚洲、美洲、欧洲,以“...
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xtreme toolkit pro——CXTPReportControl控件教程 - C/C++ - 清泛网 - 专注C/C++及内核技术

...kitPro.h> // Xtreme Toolkit Pro component library 2. 如果要使用静态连接的方式,还应该: Add the following line to your application's .rc2 file. This will link in the toolkit resources so they are available to your application. #include <XTToolkitPro.rc> 如果是动态连...
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搭建高可用mongodb集群(四)—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...前几篇文章。 任意登陆一个机器,比如登陆192.168.0.136,连接mongodb #设置第一个分片副本集 /data/mongodbtest/mongodb-linux-x86_64-2.4.8/bin/mongo 127.0.0.1:22001 #使用admin数据库 use admin #定义副本集配置 config = { _id:"shard1", members:[ ...
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Java 理论与实践: 线程池与工作队列 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...外,服务请求时所做的工作可能需要其它资源,例如 JDBC 连接、套接字或文件。这些也都是有限资源,有太多的并发请求也可能引起失效,例如不能分配 JDBC 连接。 并发错误 线程池和其它排队机制依靠使用 wait() 和 notify() 方...
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当ORACLE 11G 遇到 JUNIPER 防火墙 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

...110.102的1521端口 配置 Tnsnames.ora 文件 使用PL/SQL 连接本机的IP地址 登陆查询一切正常。 由此判断 问题不是出在跨网段等问题,当使用端口映射的时候,本机就相当于一台防火墙了。 自此认为问题还是处在防火墙上...
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How to make PDF file downloadable in HTML link?

...ints the data to the user's browser, then they can choose to save the PDF despite their browser settings. The pdf_server.php should look like this: header("Content-Type: application/octet-stream"); $file = $_GET["file"] .".pdf"; header("Content-Disposition: attachment; filename=" . urlencode($fil...
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Maximum number of threads per process in Linux?

...h it. 2. You have to specify a thread's stack when creating it, this is irrespective of ulimit -s. It is very well possible (not sensible, but possible) to create as many threads as there are possible thread IDs. Under 64 bit Linux, it is even easily "possible" to create more threads than there are ...