一个计算矩阵乘的程序,程序很简单,请大家帮忙检查下

描述了10000个天体的移动，-10000 describes the movement of celestial bodies,

AVR ATmega1280 单片机串口通信 串口接收字符串，四个串口同时启用，具有通信超时处理功能-AVR ATmega1280 microcontroller serial communication serial port to receive a string, four serial ports is also enabled with a communication time-out processing

神经网络学习中的ART算法，用VC编写。很有参考价值。-neural network learning algorithm of ART, with VC prepared. Great reference value.

线性方程组Jacobi迭代的并行求解。附件数据文件是4阶方阵的算例。调试A*x=b，A为n*m矩阵的话，数据文件第一行n m,后附[Ab]矩阵（n*(m+1)）

各种数据挖掘算法的源代码，很齐全，很好用的阿！-data mining algorithm source code is very comprehensive and good use of A!

并行计算中的PSRS算法 经试验在Red Hat下可以使用-Parallel computing in the PSRS algorithm tested in Red Hat can be used under

This software is used to test some functions of -This software is used to test some functions of

刚才的安装程序是在Linux编程环境下为MPICH安装的

由于一个数值问题的精确解往往事先不知道，而用数值方法求出的计算解的误差又是不可避免的。因此，数值解是否失真，如何判断──即误差问题，成为大家所关心的重要而又困难的问题，本章只介绍了误差的基本概念和数值计算的若干原则，这对处理数值计算问题是必需的，但是仅这些还远远不能解决工程和科学计算中更为复杂的误差分析问题，还需专门分门别类地进行研究。-as an accurate numerical solution of the problem often did not know in advance, and the numerical methods used to calculate the solution sought by the error is inevitable. Therefore, the numerical solution of whether distortion, how to judge-- namely error, as we are concerned the important and difficult issues, this chapter presents only the basic concept of error and numerical calculation of certain principles, which deal with numerical calculation is necessary, but they are far from alone can not solve engineering and scientific calculations more complex error analysis, specialized categories needed to conduct research.

包括 检验一个字符是不是数字 将一个字符数组转换成其对应的数字 获得一个合法的数字 -to include a number of characters is not a character array will be converted into the corresponding figure was a legitimate Digital