Bearing using two sets of coordinates (Latitude and Longitude) in C

I have began working on an autonomous rc helicopter in c. I need help finding a way to calculate the bearing acuratley. I am using two sets of coordinates (latitude and longitude), one is the current location and the other is the destination point. I have converted the latitude and longitude into decimal format so.... 40°58'19.86"N = 40.972183 74°14'52.74"W = 74.247983 Can anyone show me cod

在C中使用两组坐标(经度和纬度)

我已经开始在一个自治的rc直升机上工作。 我需要帮助找到一种方法来计算轴承acuratley。 我使用两组坐标(经度和纬度),一个是当前位置,另一个是目标点。 我已经将经度和纬度转换成十进制格式,所以.... 40°58'19.86"N = 40.972183 74°14'52.74"W = 74.247983 任何人都可以在c中找到代码来找到我可以使用的轴承或公式吗? 我看过:http://www.movable-type.co.uk/scripts/latlong.html,当我将它转移到C,结果没有任何

OS time scheduling program

I making a program for my subject, OS time scheduling program written in C language. I'm just starting it out but my problem is how to display the GANTT chart. And I'm little bit confuse about the Preemptive First Come, First Serve. I understand how it works but when it comes if the ARRIVAL time is... PROCESS BURST TIME ARRIVAL TIME START WAITING FINISH TURN AROUND TIME P1

OS时间安排程序

我为我的主题制作了一个程序,用C语言编写的OS时间安排程序。 我刚刚开始,但我的问题是如何显示甘特图。 我有点困惑先发制人先发制人。 我了解它是如何工作的,但是如果到达时间是... PROCESS BURST TIME ARRIVAL TIME START WAITING FINISH TURN AROUND TIME P1 12 2 ????? P2 6 1 ????? P3 9 0 ????? 但如果到

In a linux kernel mode, how can I detect a process?

I need to create a user-mode process. This process has to be detected in kernel mode to be sent to a FIFO queue (SCHED_FIFO) in the Linux kernel. I have been investigating and if you use the function void scheduler_tick(void) , which is located in core.c (I think scheduler_tick is called by the system each tick of the clock of the cpu), I can capture the process. My question is if this is co

在linux内核模式下,如何检测进程?

我需要创建一个用户模式的过程。 这个过程必须在内核模式下被检测到,以发送到Linux内核中的FIFO队列(SCHED_FIFO)。 我一直在调查,如果你使用了位于core.c中的函数void scheduler_tick(void) (我认为scheduler_tick被系统每次调用cpu的时钟调用),我可以捕获这个过程。 我的问题是如果这是正确的,或者如果有更好的方法。 Scheduler_tick代码:http://lxr.free-electrons.com/ident?i=scheduler_tick 该工作基于多

Linux kernel: schedule() function

I have seen several other questions on the forum that talk about this schedule() function, but my question is a bit different. I have seen several discussions and literature about it's theoretical, algorithmic and implementation aspects. The thing which is not clear and the question is asked about, is the execution aspect. Of course looking at the source of the kernel in depth and doing a

Linux内核:schedule()函数

我在讨论这个schedule()函数的论坛上看到了其他几个问题,但我的问题有点不同。 我已经看到了几个关于理论,算法和实现方面的讨论和文献。 执行方面,不​​明确的东西和被问到的问题。 当然,深入研究内核的来源并进行所有必要的调试,追踪bla bla ......可能会回答这个问题,但重新发明轮盘似乎并不明智。 问题/困惑如下: 内核级别的多线程用户程序遍历的路径是什么? 谁安排线程? 哪个中断上下文? 任何名字?

Round Robin Scheduling Issue

So I am writing a simple Round Robin Scheduler with a time slice of 1. Here is the input (first number is arrival time, second is burst time) 0 3 2 6 4 4 6 5 8 2 And here is the expected output (cpu is what is being executed, ready queue is what is waiting. A letter of the alphabet is used to indicate what process is being run and the number after it is the remaining time): time cpu read

轮询调度问题

所以我正在写一个简单的循环调度程序,其时间片为1。 这里是输入(第一个数字是到达时间,第二个是爆发时间) 0 3 2 6 4 4 6 5 8 2 这里是预期的输出(cpu是什么正在执行,就绪队列是什么在等待。字母的字母用于指示什么进程正在运行,其后的数字是剩余时间): time cpu ready queue (pid/rst) ---- --- --------------------- 0 A3 -- 1 A2 -- 2 B6 A1 3 A1 B5 4 B5 C4

Trouble Understanding CPU Scheduling Concepts

I have to write a CPU scheduling simulation with kernel level threads. I have to be able to use either first come first served (FCFS) or round robin (RR) algorithms. Data for the processes and their threads is given in the form of a text file. At the moment my program reads in the text file data into linked lists. I'm not really sure how to start the simulation (I've never programmed

无法理解CPU调度概念

我必须用内核级线程编写CPU调度模拟。 我必须能够使用先来先服务(FCFS)或循环(RR)算法。 进程及其线程的数据以文本文件的形式给出。 目前我的程序将文本文件数据读入链表中。 我真的不知道如何开始模拟(我以前从未编程模拟过)。 这是我如何在FCFS的情况下进行? 当我到达第一个进程的第一个线程时,我将cpu时间添加到时钟时间。 那么我是否只需在CPU闲置时将io时间添加到时钟? 或者我应该把它放回等待队列并允许

how to move packet from NF

I have a kernel module that utilizes netfilter hooks. The goal is to forward packets to another destination. As I can see by design packets coming from outside with daddr set to my servers IP pass through NF_INET_PRE_ROUTING and then suppose to be queued for local application. On NF_INET_PRE_ROUTING I alter specific packets (detect my own protocol) and replace daddr with remote servers IP and

如何从NF移动数据包

我有一个利用netfilter钩子的内核模块。 目标是将数据包转发到另一个目的地。 正如我可以看到设计来自外部的数据包与设置为我的服务器的daddr IP通过NF_INET_PRE_ROUTING,然后假设排队等候本地应用程序。 在NF_INET_PRE_ROUTING上,我更改特定的数据包(检测我自己的协议),并用远程服务器IP和saddr替换daddr与我的服务器IP。 我想从内核模块本身做到这一点,但无法找到将现有数据包移动到另一个路由点( NF_INET_FORWARD

What is the difference between tasklet and workqueue

I am a Linux device driver newbie, and want to know the exact differences between tasklet and workqueue . Additionally I have following doubts too: Which kernel stack do interrupts, tasklet and workqueue use when running in interrupt/process context? At what priority would tasklet and workqueue run and can we modify it's priority? If I implement my own work queue list, can I schedule/p

tasklet和workqueue有什么区别

我是一个Linux设备驱动程序新手,并且想知道tasklet和workqueue之间的确切区别。 另外我也有以下疑问: 在中断/进程环境中运行时,哪个内核堆栈会中断,使用tasklet和workqueue? tasklet和workqueue运行的优先顺序是什么,我们可以修改它的优先级吗? 如果我实施自己的工作队列表,我可以独立安排/优先考虑吗? Tasklets : 老了(我相信2.3左右) 有一个简单,简单的API 专为低延迟而设计 无法入睡(在IRQ上

The negamax algorithm..what's wrong?

I'm trying to program a chess game and have spent days trying to fix the code. I even tried min max but ended with the same result. The AI always starts at the corner, and moves a pawn out of the way then the rook just moves back and forth with each turn. If it get's eaten, the AI moves every piece from one side to the other until all are eaten. Do you know what could be wrong with th

negamax算法..有什么不对?

我试图编写一个国际象棋游戏,并花了数天时间来修复代码。 我甚至尝试了最小值,但以相同的结果结束。 人工智能总是从角落开始,并将一个棋子移开,然后每次转动时,这只车就会前后移动。 如果它被吃掉,那么AI会将每一块从一侧移动到另一侧,直到所有食物都被吃掉。 你知道下面的代码有什么问题吗? public Move MakeMove(int depth) { bestmove.reset(); bestscore = 0; score = 0; int maxDepth = depth;

How do I correctly check for castling in chess AI?

I have a chess AI that doesn't always know if it can castle or not. The rooks and kings have move counters that only allow them to participate in a castle when the value of the move counter equals zero. A problem occurs when the move counters are zero and there are no pieces blocking the castle, but an enemy piece has the ability to block the castle from afar. For example, imagine that yo

我如何正确检查国际象棋AI中的castling?

我有一个国际象棋AI,并不总是知道它是否可以成为城堡。 当移动计数器的值等于零时,车和国王有移动柜台,只允许他们参与城堡。 当移动计数器为零且没有任何物件阻挡城堡时会出现问题,但敌方的物件有能力远离城堡。 例如,假设你是白色的,你想制作一个女王城堡。 移动计数器为零,所以你的棋子已经移动了零点,你的白色骑士,主教和皇后都不在了。 你认为你可以城堡。 但实际上你不能城堡,因为有一个敌人的车,有一条