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lowpass_fir.asv

Clear;close all; N=21;wc=pi/4; %理想低通滤波器参数 n=0:N-1;r=(N-1)/2; hdn=sin(wc*(n-r))/pi./(n-r); %计算理想低通单位脉冲响应 if rem(N,2)~=0 hdn(r+1)=wc/pi;end %N为奇数时,处理n=r点的0/0型 wn1=bo

main3_1b.cpp

// Section 7.3.1 // $ CC ptrswap.cpp main3_1b.cpp /* Before ptrswap(): pi: 10 pj: 20 After ptrswap(): pi: 20 pj: 10 */ #include using std::cout; using std::en

ch04.04.c

// #include // #include #include #include #include /***** pi: 4 *pi: 4 st1: 12 st2: 12 ps: 4 *ps: 12 short : 2 short* : 4

xl_math.h

#ifndef _XL_MATH_H_ #define _XL_MATH_H_ #include #include "xl_global.h" typedef double AngDeg; typedef double AngRad; const double PI = 3.14159265359; const double PIx2 = PI*2.0

sample.c

/* * Example program * * Copyright (c) 1988-1997 Shamus Software Ltd. */ #include #include "miracl.h" int main() { /* Brents example program */ flash x,pi; mira

declareassign.java

public class Declareassign{ public static void main(String args[]){ final double PI=3.1415926; boolean b = true; int x,y=8; float f=4.5f; double d=1.71828; char c; c='\u0041'; x=12

07-30.txt

例7-30 Fourier变换的实现。 解:在命令窗口中输入如下命令,并按Enter键确认。 >> syms t v w x >> fourier(1/t) ans = i*pi*(Heaviside(-w)-Heaviside(w)) >> fourier(exp(-x^2),x,t) ans = pi^(1/2)*exp(-1/4*t^2) >> fourier(exp(-

show_tan.c

#include #include void main(void) { double pi = 3.14159265; printf("Tangent of pi is %f\n", tan(pi)); printf("Tangent of pi/4 is %f\n", tan(pi / 4.0)); }

p1-98.cpp

#include //以下是几个简单宏替换预处理指令 #define YES 1 #define PI 3.1415926 #define RAD PI/180 #define MESG "This is a string." //以下是主程序 main() { //以下各语句使

p1-12.cpp

#include const double PI=3.1416; //声明常量(const变量)PI为3.1416 main() { //声明3个变量 double r,l,s; //输入圆的半径 coutr; //计算圆的周长