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Russellxys

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//ÕýÑÝ£¨ºÏ³ÉµØÕð¼Ç¼£©

/**************************************************/
//¿âÍ·Îļþ
#include"stdio.h"
#include"stdlib.h"
#include"math.h"

/***************************************************/
//Ô¤´¦Àíºê¶¨Òå
#define L_R 69
#define Trace 31
#define dx 1                //µÀ¼ä¾à
#define sample 512
#define dt 0.001
#define pi 3.1415926

/****************************************************/
//ÉùÃ÷º¯Êý
int Ricker(float *x,float y);//À׿Ë×Ó²¨
int Reflect(float *x,float *y,float r[]);//·´ÉäϵÊý
int Conv(float *x,float la,float *y,float lb,float c[]);//ñÞ»ý

/****************************************************/
//Ö÷º¯Êý²¿·Ö
int main()
{
        FILE *fp_reflect,*fp_conv;
        if((fp_reflect=fopen("reflect.dat","wb")==NULL)
                printf("can not open the reflect file\n";
        if((fp_conv=fopen("conv.dat","wb")==NULL)
                printf("can not open the conv file\n";
        int i;
        float F;//×Ó²¨Ö÷Ƶ
        float Ri[L_R]={0.},Re[sample],Co[sample],P[3],VP[3];

        //¶¨Ò嵨²ãÄ£ÐͲÎÊý
        for(i=0;i<3;i++)
        {
                printf("please input the magnitude of VP[%d]\n",i);
                scanf("%f",VP+i);
                printf("please input the magnitude of P[%d]\n",i);
                scanf("%f",P+i);
        }
        printf("please input the frequency of wave\n";
        scanf("%d",&F);

        for(i=0;i<Trace;i++)
        {
                Reflect(VP,P,Re);
                Conv(Re,sample,Ri,L_R,Co);
                fwrite(Re,sizeof(float),sample,fp_reflect );//frite¶ÁÒ»¸öʵÊý»òÕ߽ṹÌå±äÁ¿µÄÖµ
                fwrite(Co,sizeof(float),sample,fp_conv );
        }
        fclose(fp_reflect);
        fclose(fp_conv);
}

/****************************************************/
//¶¨Òå×Óº¯Êý
int Ricker(float *x,float y)
{
        FILE *fp;
        if((fp=(fopen("Ricker.txt","w"))==NULL)
                printf("can not open the file\n";
        int i;
        float t;
        for(i=1;i<=L_R/2;i++)
        {
                t=i*dt;
                *(x+L_R/2) = 1.0;
                x[L_R/2+i] = cos(2*pi*y*t)*exp(-pow(pi*y*t,2));
        x[L_R/2-i] = x[L_R/2+i];
        }
        for(i=0;i<L_R;i++)
        {
                fprintf(fp,"%f",x+i);
        }
        fclose(fp);
        return 1;
}

int Reflect(float *x,float *y,float r[])
{
        int i,Z1,Z2;
        static int h=25;
        Z1=(int)h/x[0]*dt;
        Z2=(int)Z1+h/x[1]*dt;
        for(i=0;i<sample;i++)
        {
                if(i==Z1)
                        r=(x[1]*y[1]-x[0]*y[0])/(x[1]*y[1]+x[0]*y[0]);
                if(i==Z2)
                        r=(x[2]*y[2]-x[1]*y[1])/(x[1]*y[1]+x[2]*y[2]);
                else
                        r=0.;
        }
        return 1;
}
int Conv(float *x,float la,float *y,float lb,float c[])
{
        int i,j;
        for(i=1;i<=la+lb-1;i++)
        {
                c=0.;
                for(j=0;j<i&&i-j<lb;j++)
                {
                        c=c+x[j]*x[i-j-1];
                }
        }
        return 1;
}
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