Fortran求解矩阵线性方程组，有例子，可以直接运行

密码学中 enigma算法的 c语言实现 原理清晰-Enigma cryptography algorithm implementation of the principles of clear language c

平方筛 验证质数的方法，很快-square screen test standard method soon

FIR数字滤波器设计，窗函数在信号处理中的作用-FIR digital filter design, window function in the signal processing of

superpiexl 是一种分割方法和理念，将图像分割成一个个类似大pixel的块儿，艾玛，我的表述怎么这么不给力，总之，它是图像预处理过程。这里上传的这个code，是superpiexl的实现，可以直接使用，观察图像分割的结果，enjoy it！

实现了ACM1087题中的要求，以文件的方式提供测试数据。-ACM1087 realize the title of the request, the document provided in the form of test data.

cholesky算法，解三对角矩阵的-cholesky algorithm, and three diagonal matrix

应用背景Build Instructions: Make sure you have autoconf, swig, texinfo, python-dev, build-essential packages or equivalent installed via your package manager. cd libredwg ./autogen.sh && ./configure && make && sudo make install cd ../dxflib ./configure && make && sudo make install cd .. Once the above dependencies have been built, edit /usr/local/include/dwg.h, and rename the THICKNESS constant (or add _ to end). It conflicts with another constant included in the converter, but is not used itself. After that, just run "make". That"s it! 关键技术GNU LibreDWG 是一个免费开源的 C 库用来处理 DWG 文件，这

*   *   To approximate I = integral ( ( f(x) dx ) ) from a to b:*   *   INPUT:   endpoints a, b; integer n.**   OUTPUT:  an array R. ( R(2,n) is the approximation to I. )**   R is computed by rows; only 2 rows saved in storage   

实现了卷积码的编译码，针对运算速度和存储进行了优化，已应用于实际的DSP芯片中。编译码器都基于参数化实现，可对卷积码的约束长度、生成多项式、是否进行咬尾操作等进行配置。译码采用Viterbi算法，回溯长度可配置。代码有详细的注释，方便维护。