linux c调试代码

将怎么优化程序性能的，讲得比较深入了，适合有一定经验的程序员看-How to optimize the performance of, put it more in-depth, and suitable for experienced programmers have a certain look

gcc支持soft fp 和hard fp两种，这里是实现了soft fp.-gcc support soft and hard fp fp two, here is the realization of a soft fp.

关于OpenMP性能调优的资料，更深一步学习如何提高程序性能。主要掌握了循环互换，循环展开和循环合并等方法，和缓存的一致性来解决共享变量带来的负荷，了解了线性递推（Linear Recurrence）和如何用分块提高矩阵的更新效率。 -On the OpenMP performance tuning information, deeper to learn how to improve program performance. Main mastered the loop interchange, loop start and loop merging and so on, and cache consistency to solve the shared variables to bring the load to find the linear recurrence (Linear Recurrence), and how to block updates to improve the efficiency of the matrix.

写一个脚本文件checkuser,该脚本运行时带一个用户名作为参数，具体要求如下： 1)如果命令行格式不符合要求，应有错误提示信息； 2)在/etc/passwd文件中查找是否有该用户， 如有，则输出“Found in the /etc/passwd file.” 否则，输出“No such on our system” -Write a script file checkuser, the script run-time with a user name as a parameter, and specific requirements are as follows: 1) If the command-line format does not meet the requirements, there should be error message 2) in/etc/passwd file to check if there were any users, and if so, then the output " Found in the/etc/passwd file. " Otherwise, output" No such on our system "

PID控制仿真程序 假设一个控制系统：10kg的水，使用最大1kW的电阻丝加热，简化计算，假设焦耳和卡的转化单位为1，而不是4.2加热效率为 Watt [瓦],散热效率为5*T [瓦]设定目标温度为60度， 则100000秒内的温度变化曲线是如何的？-PID control simulation program assumes that a control system: 10kg of water, using hot-filament maximum 1kW resistor to simplify the calculation, assuming the conversion of Joule and card unit of one, instead of 4.2 for heating efficiency Watt [W], thermal efficiency of 5* T [W] set a target temperature of 60 degrees, then the 100000 sec the temperature curve is how?

avi player 使用Linux下 GDK,GTK-avi player Use Linux your GDK, GTK

gcc 能编译 完全用于学习！gcc can be compiled exclusively for learning!-gcc can be compiled exclusively for learning!

44b0 beep gpio beep voice -44b0 beepgpio beep voice

linux设备驱动开发，清晰版本第三版，非常适合LINUX开发驱动使用-linux device driver development, a clear version of the third edition, is ideal for the development of drivers to use LINUX

altera epxa1的例子程序-ALTERA epxa1 examples of procedures