arbitrary precision strike pi value

一般的快速DCT算法只有8点和16点的，我这里提供任意长度（2的幂次方）的DCT快速算法原代码-general fast DCT algorithm only 8:00 and 16:00, and here I am of arbitrary length (two of the power law) DCT fast algorithm source code

复数类，封装了复数的所有运算-plural categories, a complex package of all Operational

一个基础的PSO算法，注释详细，很利于学习参考。 粒子群优化算法（PSO——Particle Swarm Optimization）是一种基于种群的随机优化技术，由Eberhart和Kennedy于1995年提出。粒子群算法模仿昆虫、兽群、鸟群和鱼群等的群集行为，这些群体按照一种合作的方式寻找食物，群体中的每个成员通过学习它自身的经验和其他成员的经验来不断改变其搜索模式。

跟踪滤波的目的是根据已获得的目标观测数据对目标的状态进行精确估计，跟踪滤波的关键是对机动目标的跟踪能力，机动目标跟踪的主要困难在于跟踪设定的目标模型与实际的目标动力学模型的匹配问题。 -The purpose of tracking filter is based on objective observational data has been the target of the state accurately estimate the key to tracking filter for maneuvering target tracking capabilities, the main difficulty maneuvering target tracking is to track the target model to set realistic goals and motivation learn the model matching problem.

表达式算法,console程序-expression algorithm console procedures

Matlab、基于 MATLAB系统的信号FFT-Matlab, based on MATLAB FFT signal system

Check1(0).Caption = "香皂" Check1(1).Caption = "肥皂" Check1(2).Caption = "牙膏" Check1(3).Caption = "洗衣粉" Label1(0).Caption = "5.8元" Label1(1).Caption = "2.5元" Label1(2).Caption = "7.9元" Label1(3).Caption = "6.4元"-Check1 (0). Caption = "soap" Check1 (1). Caption = "soap" Check1 (2). Caption = "toothpaste" Check1 (3). Caption = "detergent" Label1 (0). Caption = "5 .8 million "Label1 (1). Caption = "2.5 yuan" Label1 (2). Caption = "7.9 yuan" Label1 (3). Caption = "6.4 yuan"

通过此程序可以把输入的年份判别是平年,还是闰年.-through this procedure can be imported in the year discriminant is non-leap year, or a leap year.

功能：1）键盘输入或从文本文件中读入一个算术表达式；2）验证表达式的合法性，包括：表达式是否合法，数据是否合法；3）计算表达式的结果；4）保存表达式及其结果到一个文本文件中；5）用链表的形式实现计算用的栈。

一些c程序，象棋之马踏棋盘、把算术表达式转化未逆波兰表达式、保龄球计分规则算法、可进行多达50位的大整数运算（＋X）、铁路调度算法，演示了堆栈的基本用法-Some c procedures, horse riding chess board, the arithmetic expressions are not translated into Reverse Polish expression, bowling scoring rules algorithm, can be as many as 50 large integer calculations ( X), the railway scheduling algorithm, demonstrated the basic stack Usage