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¹«Ê½¼û¸½¼þ£º ³ÌÐòÖ÷Òª´úÂëÈçÏÂ: for(k=0;k extract1(i,j,xtemp); //pick out X[k][j] at site(i,j) to xtemp[k]; //caculate the k1[S] for all species at site(i,j) f(sigma[k],rou[k],kc,xtemp,k1); //caculate X[k][j]+k1[k]*tao/2 increase(tao,k1,xtemp); //caculate K2 for species k at site(i,j) f(sigma[k],rou[k],kc,xtemp,k2); //caculate X[k][j]+k2[k][j]*tao/2 increase(tao,k2,xtemp); //caculate k3 for species k at site(i,j) f(sigma[k],rou[k],kc,xtemp,k3); //caculate X[k][j]+k3[k][j]*tao increase(2*tao,k3,xtemp); //caculate K4[k][j] for species k at site(i,j) f(sigma[k],rou[k],kc,xtemp,k4); XX[k][j]=X[k][j]+tao*((k1[k]+2*k2[k]+2*k3[k]+k4[k])/6+PXX[k][j]); } void f(float sg,float r, float k[S][S],float x[S],float kk[S]) { int i,j; float temp1,temp2; for(i=0;i temp1=0; temp2=0; kk=(-1)*sg*x; for(j=0;j temp1=1-temp1; for(j=0;j temp2+=k[j]*x[j]; temp2+=r; kk+=temp1*temp2*x; } } [ Last edited by csfn on 2008-12-29 at 20:08 ] |
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