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spline513
这是一个三次样条插值函数实现的C代码。如果插值点需要改变,可以在程序中改定。(This is a cubic spline interpolation function of the realization of the C code. If interpolation points need to change, the procedures will change.)
- 2020-12-10 16:19:18下载
- 积分:1
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FFT
FFT源代码 FFT源代码 FFT源代码(FFT source code FFT source code FFT source code)
- 2021-03-09 16:59:27下载
- 积分:1
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fitness
fitness,适应度函数,计算适应度函数,(fitness, fitness function, calculate the fitness function,)
- 2012-08-24 21:05:34下载
- 积分:1
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shock_tube_problem
求解激波管问题等产生的偏微分方程组的各种数值算法。(Shock tube problem solving, such as partial differential equations arising from a variety of numerical algorithm.)
- 2009-03-18 19:18:29下载
- 积分:1
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FFT
说明: 该文件是用C语言实现快速傅里叶变换的源代码,需要的朋友快下载(The document is used C language to achieve fast Fourier transform of the source code, need friends fast download)
- 2009-08-08 16:08:03下载
- 积分:1
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121
1. 牛顿迭代法
function [x,i]=newtonmethod(x0,f,ep,Nmax)
牛顿法求非线性方程根
x0是输入初始值, f是输入函数, 精度要求ep, Nmax为最大迭代次数
x是输出迭代序列,i是迭代次数
2. 二分法
function [x,k]=bisection(a,b,f,ep)
二分法解非线性方程
输入区间[a,b],函数f和误差ep, Nmax为最大二分次数
x为输出近似根, k为二分次数
( Newton s law and the dichotomy)
- 2020-10-12 22:57:32下载
- 积分:1
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code_ista
ista算法,用于最优化求解,迭代收敛,实用小程序(ista algorithm, for the most optimtical problem)
- 2017-12-13 10:12:21下载
- 积分:1
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upward_continuation
实现位场数据的向上延拓运算,有效的消除数据中的噪音及浅部干扰。(Realize the potential field data upward continuation operator, effectively eliminate the noise in the data and shallow interference.)
- 2013-01-08 13:49:07下载
- 积分:1
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fft
用DFT 函数计算电压u, 电流i的基波(f1=50 Hz)的有效值和相位;
用FFT函数分别计算电压u和电流i 所包含的直流,基波和谐波的有效值和初相角;
可计算基波(f1=50 Hz)和各次谐波的功率p和功率因数con?.(The effective value and phase of fundamental wave (f1 = 50 Hz) of voltage U and current I are calculated by DFT function.
The effective values and initial phase angles of DC, fundamental and harmonic waves contained in voltage U and current I are calculated by FFT function, respectively.
The power P and power factor con of fundamental wave (f1 = 50 Hz) and harmonics can be calculated.)
- 2019-03-28 15:48:19下载
- 积分:1
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Iterative-dynamic-reduction
迭代的动力缩聚法计算结构的前两阶频率和阵型(4个自由度)(Iterative dynamic condensation method to calculate the structure of the first two natural frequencies and formation (4 degrees of freedom))
- 2013-07-08 14:45:37下载
- 积分:1