xiankuan

C++实现的FFT，详细，简单，内含多个测试类(using C++ implements fft，including serials class)

用矩阵法求定积分1/(1+x^2)dx，区间是（-4，4）(Definite Integral Matrix Method)

实现1到1000位的大数运算（包括加减乘除和浮点数运算），运行环境是vs2005(1-1000, large number operations (addition, subtraction and floating-point), the operating environment is vs2005)

C++编写的电力系统潮流计算程序，采用牛顿法，并考虑到节电优化编号，5,14,57,300节点验证正确(Power flow calculation program, C++ written using Newton' s method, taking into account the number to the power-saving optimization, 5,14,57,300 node authentication)

电磁场与微波技术下的射线追踪技术。应用c语言编程(Electromagnetic Field and Microwave Technology under the ray tracing technique. Application c programming language)

说明：  实现基2时域频域抽取fft算法，可输出运算后所得复序列的模值序列，并可记录显示计算所用时间(Achieve base 2 fft algorithm frequency domain extraction can be obtained after computing the output sequence of modulus of complex sequences can be used in the calculation time, records show)

本程序用在测试采煤机煤矸识别系统中，验证小波算法(Wavelet Algorithm for caving coal)

计算热轧中的单机架的轧制压力，采用的是SIMS公式，(rolling force calculation)

this is fft header file for fast fourier transform. with this file, you can compute frequency spectrum zero to tow pi.

说明：  用FORTRAN语言实现二维欧拉方程的求解，采用二阶MUSCL迎风格式()