return RD(i,j);

}

unsigned char BL(int i,int j){

A;n;n++){x=R;y=R;if(B==1){f=1;for(d=0;d<4;d++){c[d]=M;f=f2){B=f-1;}else{++e%=4;d=e;if(!c[e]){B=0;M=1;}}}}}return m[i][j];

}

最后这张图来自Eric Tressler：

这是由logistic映射得到的Feigenbaum分岔图。和刚才一样，对应的代码也巧妙地利用了宏定义来节省字符：

unsigned char RD(int i,int j){

#define A float a=0,b,k,r,x

#define B int e,o

#define C(x) x>255?255:x

#define R return

#define D DIM

R BL(i,j)*(D-i)/D;

}

unsigned char GR(int i,int j){

#define E DM1

#define F static float

#define G for(

#define H r=a*1.6/D+2.4;x=1.0001*b/D

R BL(i,j)*(D-j/2)/D;

}

unsigned char BL(int i,int j){

F c[D][D];if(i+j<1){A;B;G;a<D;a+=0.1){G b=0;b<D;b++){H;G k=0;kD/2){e=a;o=(E*x);c[e][o]+=0.01;}}}}}R C(c[j][i])*i/D;

}