判断C表达式是否成立

判断C表达式是否成立，成立返回1，否则，返回0。

程序代码

unsigned func_un_int(int x, int y,int r);void main()
{static int x[5]={0x8001,0x8001,0x2,0x8001,0x8001};static int y[5]={0x8000,0x8000,0x3,0x8000,0x8001};static int i,z[5];for(i=0;i<5;i++)z[i]=func_un_int(x[i],y[i],i);while(1);
}

unsigned func_un_int(int x,int y,int i)
{unsigned uz;unsigned ux=(unsigned int) x;unsigned uy=(unsigned int) y;switch(i){case 0:uz= (x>y)==(-x<-y);break;case 1:uz=((x+y)<<5)+x-y==31*y+33*x;break;case 2:uz= ~x+~y==~(x+y);break;case 3:uz= (int)(ux-uy)==-(y-x);break;case 4:uz= ((x>>1)<<1)<=x;break;default:uz=2;}return uz;
}

z[5]= {0, 1, 0,  1, 1}。