Fortran 90

一个正二十面体通过迭代产生(star)星形的漂亮的工程,需要glut-is an icosahedral through iterative (star) star beautiful project that requires glut

里面提供两个函数，分别是公历转农历，农历转公历。时间最多到2100年，网上有很多公历转农历的案例，农历转公历的很难找到，自己写了个，传上来，函数都封装好了，按结构体输入后就可以直接使用了！

作为简单的堆排序算法的实现。

计算尺寸因子对消光效率和散射效率，吸收效率，后向散射效率等的影响-calculation of the size factor extinction efficiency and the efficiency of scattering, absorption efficiency, after scattering efficiency of

标准单纯性算法程序，不知能否满足大家需要。-simple algorithm standard procedures, we will be able to meet the need.

带简单汉字库、用户可以增加字库、实现字符的识别。用户能直接用，还可以修改成其它用途。使用方便实用。

资源描述【摘 要】从通信系统的基本原理出发，着重分析了系统中的常用信道编码。在此基础上对应用广泛的一类缩短循环码 的校验性能从数学理论和matlab 仿真模型两方面进行研究,更直观的揭示了生成多项式与编码校验性能的内在联系，为构造 更优化的标准打下基础。 【关键词】信道编码；缩短循环码；生成多项式；矩阵实验室

用于实现非均匀采样FFT（NDFT），C代码，适合任意大小，复数数据；由Stefan Kunis , Daniel Potts开发-Realize non-uniform sampling for the FFT (NDFT), C code, suitable for any size, the plural data by Stefan Kunis, Daniel Potts development

Displays a rotatable and scaleable wire frame of any 3D mathematical function. This can be made up from the normal VB maths plus inverse and hyperbolic functions. Functions can be created and saved as wanted. Image vertices can also be saved for use elsewhere. The MS ScriptControl Eval function simplifies calculations enormously and its use is demonstrated. Also shown are MoveToEx, LineTo which are much faster than the VB equivalents and very easy to use. Included are a set of string handling subroutines such as count characters, squeeze out spaces, replace sub-strings etc. Commented throughout including the 3D maths and perspective methods. All the files are visible and the program is written for an 800x600 screen.

QR分解法是三种将矩阵分解的方式之一。这种方式，把矩阵分解成一个正交矩阵与一个上三角矩阵的积。QR分解经常用来解线性最小二乘法问题。QR分解也是特定特征值算法即QR算法的基础。