数字信号处理C语言集（1.1 随机数的产生）

 main.cpp

 

所建工程文件如下图所示

uniform.h

#ifndef _UNIFORM_H_ #define _UNIFORM_H_ double uniform(double a,double b, long int *seed); #endif

 

uniform.cpp

#include "uniform.h" #include "stdio.h"
#define Lamda 2045 #define Miu 1 #define M 1048576
double uniform(double a, double b, long int *seed) {     double t;     *seed = Lamda*(*seed) + Miu;     *seed = *seed - (*seed/M)*M;      t = (*seed) / (M+0.0);      t = a + (b - a)*t;      return(t); }

uniform_test.h

?

#ifndef _UNIFORM_TEST_H_

#define _UNIFORM_TEST_H_

void uniform_test(void);

#endif

 uniform_test.cpp

#include "uniform_test.h" #include "uniform.h" #include "stdio.h" #include <iostream> #include <iomanip> using namespace std;
void uniform_test(void)  {     double a =0.0;     double b =1.0;     double x;     long int s=13579;     int i,j;     printf("\n  uniform test start!\n");     for(i=0;i<10;i++)     {         for(j=0;j<5;j++)         {             x=uniform(a,b,&s);             cout<<setiosflags(ios::fixed)<<setprecision(7);            cout << x << ' ';            //printf("  %13.7f",x);        }         cout << ' ' <<endl;        //printf("\n");    } 
}

//#include "uniform.h"#include  "uniform_test.h" #include<stdio.h>
void main(void) {     uniform_test();     getchar(); }